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• #1 Influenza Vaccine: Benefits & Side Effects

  https://my.clevelandclinic.org/health/drugs/18888-influenza-virus-vaccine-injection

  The influenza vaccine reduces your risk of getting influenza or the flu. The flu causes fever, head and body aches, coughing and a stuffy or runny nose. […] Report any side effects that do not go away within 3 days to your doctor or health care professional. Call your health care provider if any unusual symptoms occur within 6 weeks of receiving this vaccine. […] Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome): fever, headache, muscle aches and pains, pain, tenderness, redness, or swelling at the injection site, tiredness.

• #1 Flu shot side effects and how to manage them | MD Anderson Cancer Center

  https://www.mdanderson.org/cancerwise/flu-shot-side-effects-and-how-to-manage-them.h00-159701490.html

  Side effects after a flu shot can be uncomfortable, but do they mean you shouldnt get vaccinated? […] The most common side effects of the flu shot include: Injection site pain, Headache, Muscle aches, Fatigue. […] The symptoms of getting a flu shot are generally mild, especially when compared to influenza itself. […] Most of the common side effects like those listed above typically appear shortly after receiving your shot. […] These symptoms are typically mild and last a short period of time. They usually resolve within 24 to 48 hours. […] While some people may still get the flu after vaccination, their disease course is typically milder than if they didnt get vaccinated. […] The benefits of a flu shot outweigh the temporary discomfort of side effects.

• #1 Frequently Asked Questions about Flu Vaccines | Baltimore City Health Department

  https://health.baltimorecity.gov/flu/frequently-asked-questions-about-flu-vaccines

  The flu vaccine is safe for most people and is recommended for everyone ages 6 months and older. […] While a flu vaccine cannot give you flu illness, there are different side effects that may be associated with getting a flu shot or a nasal spray flu vaccine. These side effects are mild and short-lasting, especially when compared to symptoms of a bad case of flu. […] Some minor side effects that may occur are: soreness, redness, and/or swelling where the shot was given, headache (low grade), fever, muscle aches, nausea, fatigue. […] In children, side effects from the nasal spray may include: runny nose, wheezing, headache, vomiting, muscle aches, fever (low grade). […] If these problems occur, they begin soon after vaccination and usually are mild and short-lived. […] Some people who get vaccinated may still get sick. However, flu vaccination has been shown in some studies to reduce the severity of illness in people who get vaccinated but still get sick.

• #1 Flu shot yesterday, sick today: Is this normal?

  https://www.medicalnewstoday.com/articles/flu-shot-yesterday-sick-today

  Among the most commonly reported side effects are: soreness, redness, tenderness, or swelling at the injection site, low-grade fever, headache, muscle aches, nausea. […] A person who receives the nasal flu vaccine may experience additional side effects, such as: runny nose, wheezing, headache, vomiting, muscle aches, fever, sore throat, cough. […] Some evidence suggests a possible association between the flu vaccine and Guillain-Barr syndrome (GBS). […] However, some studies do not confirm this association. […] Typical side effects after receiving the flu vaccine include soreness, tenderness, and redness at the site of the injection. […] Some people, particularly children and infants, may develop a low-grade fever. This may be a sign that the immune system has responded to the vaccination.

• #1 Flu Vaccine Side Effects | Healthworks

  https://www.healthworks.com.au/flu-vaccine-side-effects/

  Do you have concerns about flu vaccine side effects preventing you from scheduling your shot? […] Some of the most common flu shot reactions include: […] Side effects to the influenza vaccine typically onset within 12-24 hours after vaccination. Symptoms can last from several hours up to two days after vaccination. […] After your flu shot, if you are having difficulties breathing, experience fainting, seizures or have a temperature over 40 degrees, call triple zero. […] Any other unexpected, persistent or severe side effects should be referred to a medical professional. […] The negatives some people find with getting flu vaccines is the risk of experiencing any side effects but the vast majority of people experience no or minor side effects. […] No, there is no evidence-based research to suggest any long-term side effects of the flu vaccine. […] In very rare circumstances, people have experienced Guillain barr syndrome after receiving a vaccine.

• #1 Flu Shot Side Effects: How to Manage Flu-Like Symptoms

  https://www.pasadenauc.com/blog/flu-shot-side-effects/

  Some people have cold symptoms after a flu shot, such as nasal congestion or a moderate cough. […] The majority of flu shot side effects are modest and usually disappear on their own within a few days. However, if symptoms develop, such as a rising temperature, severe muscular pain, or persistent exhaustion, or if they continue for more than 48 hours, it is best to see a doctor. […] Some people experience a delayed response, feeling flu shot sick the next day after receiving the vaccination. This is most likely due to the immune system stepping up its defenses. Although it may be inconvenient, this reaction is natural and transient. […] Yes, moderate flu-like symptoms are a frequent side effect that signals how your immune system is reacting to the vaccine. […] Symptoms often persist no more than 1-2 days. If the symptoms persist, consult your doctor.

• #1 Here’s How Long Flu Shot Side Effects Last, If You Experience Them at All | SELF

  https://www.self.com/story/how-long-do-flu-shot-side-effects-last

  Although everyone will have their own unique experiences, soreness and swelling around the area you got poked (usually your upper arm) is the most common flu vaccine side effect, Daniel Abazia, PharmD, a clinical associate professor of pharmacy practice and administration at Robert Wood Johnson University Hospital in New Jersey, tells SELF. Other totally normal and common side effects, according to the CDC, include headache, fever, muscle aches, and fatigue. […] All of these common side effects typically last for about two days at the most, Dr. Abazia says, but if theyre lasting beyond three to four days, you may want to consider calling your doctor. […] Much, much more rare is the possibility of developing Guillain-Barr syndrome (GBS): a disorder in which your immune system temporarily or permanently damages your nerves, causing muscle weakness and sometimes paralysis, which can be life-threatening in some cases.

• #1 Influenza (flu) – immunisation | Better Health Channel

  https://www.betterhealth.vic.gov.au/health/healthyliving/flu-influenza-immunisation

  Possible side effects of the flu vaccine include drowsiness or tiredness, muscle aches, localized pain, redness and swelling at the injection site, occasionally, an injection-site lump (nodule) that may last many weeks but needs no treatment, and low-grade temperature (fever). […] Common side effects following immunisation are usually mild and temporary (occurring in the first 2 days after vaccination). […] If the side effects following immunisation are unexpected, persistent, or severe, or if you are worried about yourself or your child’s condition after a vaccination, see your doctor or immunisation nurse as soon as possible or go directly to a hospital. […] There is a very small risk of a serious allergic reaction (anaphylaxis) to any vaccine. […] Apart from anaphylaxis, other extremely rare side effects include febrile convulsions in children. […] A small increase in Guillain-Barr syndrome was seen in the US in 1976, but since that time, surveillance has shown that it is limited to one case for every million doses of the flu vaccine, if at all.

• #1 Flu Shot Side Effects: How to Manage Flu-Like Symptoms

  https://www.pasadenauc.com/blog/flu-shot-side-effects/

  The flu vaccination does not contain a live virus that could trigger the flu. Instead, it stimulates your immune system by introducing dormant or weakened viral particles. When you feel sick after getting a shot, it typically means your immune system is reacting. […] Typical symptoms might include: A low-grade fever, Fatigue, Muscles ache, Mild cough or congestion. […] These symptoms may make individuals believe that the flu shot is making them sick, but it is vital to remember that this is not the flu. Instead, your body is preparing to fight off the true virus if it encounters it later. […] Mild Flu-Like Symptoms: Feeling sick after a flu shot might include a slight fever, chills, or exhaustion. These symptoms are transient and indicate that your immune system is functioning properly.

• #1 Flu shot yesterday, sick today: Is this normal?

  https://www.medicalnewstoday.com/articles/flu-shot-yesterday-sick-today

  It is normal to experience some mild side effects, such as a headache or low-grade fever, after receiving the flu shot. This is by no means a cause for concern. […] The flu shot may give people certain side effects, which are usually mild. People may report soreness, redness, and tenderness where they received the injection. […] According to the Centers for Disease Control and Prevention (CDC), other side effects people report may include: low-grade fever, headache, muscle aches. […] These effects may last 12 days. They are mild and much less intense than the symptoms of the flu. […] Some people may develop flu-like symptoms after immunization. A fever is common in children and infants after vaccination. […] A body temperature of 38-39°C helps strengthen the immune system response after vaccination. If a person develops a low-grade fever after vaccination, this means the immune system is active.

• #1 What is flu? – Flu: vaccine, causes, treatment, and more – Newham Council

  https://www.newham.gov.uk/health-adult-social-care/flu-vaccine-causes-treatment

  Some of the main symptoms of flu include the below. Flu symptoms come on very quickly and can include: a sudden high temperature (fever) […] Having the flu vaccine will reduce your risk of serious illness. Once vaccinated, youre more likely to have milder symptoms and recover quicker if you do catch the viruses.

• #1 Can You Still Get the Flu If You Get a Flu Shot? – Medical Associates of Northwest Arkansas

  https://mana.md/can-you-still-get-the-flu-if-you-get-a-flu-shot/

  Getting a flu shot is the best thing that you can do to keep yourself from getting sick with influenza virus. However, getting a dose of flu vaccine does not mean that you are immune to the flu. Flu vaccination offers protection against flu virus and its the most effective way to prevent the flu but you can still get sick even after vaccination. […] It is possible to get the flu even if you receive a dose of flu vaccine. Flu vaccination reduces the risk of flu illness between 40% and 60%. […] While its possible to get sick with the flu even after getting a flu shot, you can not get a flu infection from a flu vaccine. Some people may feel ill or have a reaction after a dose of flu vaccine, but this reaction is not a case of the flu. […] Getting flu vaccine reduces the severity of flu symptoms if you do get sick.

• #1 Flu (influenza): Get your flu vaccine (flu shot) – Canada.ca

  https://www.canada.ca/en/public-health/services/diseases/flu-influenza/get-your-flu-shot.html

  The flu vaccine is your best defense against the flu. […] Side effects after a flu vaccine are generally mild and go away on their own within a few days. You cannot get the flu from the flu vaccine. Severe reactions are very rare. […] It generally takes about 2 weeks for your flu vaccine to work. The effectiveness of the vaccine can vary and may depend on: your health and age, how well this year’s vaccine matches this year’s flu strains.

• #1 Flu Facts | Washington State Department of Health

  https://doh.wa.gov/you-and-your-family/illness-and-disease-z/flu/flu-facts

  […] […] It takes about eight to ten days after a single dose of the vaccine to create a strong immune response in most healthy adults. If you’re planning to travel, be sure to get your flu shot at least two weeks before your trip. […] […] […] Some people do not get any side effects from the vaccine, but some do. Most side effects from the flu vaccine are mild. The most common side effects are: […] Soreness, redness, tenderness, or swelling where the vaccine was given […] Fainting (mainly in adolescents) […] Headaches […] Muscle aches […] Fever […] Nausea (upset stomach) […] […] […] If these problems occur, they usually begin soon after a person receives the vaccine, and last for one to two days. Life-threatening allergic reactions are rare. If they do occur, they usually happen within a few minutes to a few hours after the vaccine was given. If your doctor or pharmacist is concerned you may have an allergic reaction or a side effect such as fainting, they may ask you to wait at the clinic or pharmacy for 15 minutes after you get the vaccine.

• #1 Flu shot: Your best bet for avoiding influenza

  https://www.mayoclinic.org/diseases-conditions/flu/in-depth/flu-shots/art-20048000

  Getting a flu vaccine is the best way to prevent the flu and its complications for almost everyone. […] But you might develop flu-like symptoms despite getting a flu vaccine for many reasons, including: […] Some people have muscle aches and a fever for a day or two after receiving a flu vaccine. This may be a side effect of your body’s production of protective antibodies. […] It takes about two weeks for the flu shot to take full effect. If you’re exposed to the influenza virus shortly before or during that time period, you might catch the flu. […] In some years, the influenza viruses used for the vaccine don’t match the viruses spreading during the flu season. If this occurs, your flu shot will be less effective. But it may still offer some protection. […] Many other illnesses, such as COVID-19, also have flu-like symptoms. So you may think you have the flu when you actually don’t.

• #1 Key Facts About Seasonal Flu Vaccine | Influenza (Flu) | CDC

  https://www.cdc.gov/flu/vaccines/keyfacts.html

  Influenza (flu) is a potentially serious disease that can lead to hospitalization and sometimes even death. […] Complications of flu can include bacterial pneumonia, ear infections, sinus infections and worsening of chronic medical conditions, such as congestive heart failure, asthma, or diabetes. […] While some people who get a flu vaccine may still get sick with influenza, flu vaccination has been shown in several studies to reduce severity of illness. […] It’s possible to get sick with flu even if you have been vaccinated (although you won’t know for sure unless you get a flu test). […] Some people who get vaccinated may still get sick with flu. However, flu vaccination has been shown in studies to reduce severity of illness in people who get vaccinated but still get sick.

• #1 Vaccine-associated reduction in symptom severity among patients with influenza A/H3N2 disease

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4684491/

  Among patients with A/H3N2 infection, receipt of seasonal influenza vaccine was associated with reduced symptom severity. […] In multivariate analysis, vaccinated individuals were significantly less likely to report a fever 101 F (OR 0.24; 95%CI [0.10, 0.62]) and more likely to report myalgias (OR 3.31; 95% CI [1.22, 8.97]) than vaccinated individuals. […] Among patients with A/H3N2 infection, upper respiratory and total symptom severity scores were significantly lower for vaccinated patients during the first two days of illness, and differences in total symptom severity persisted over seven days (p0.05 for all comparisons). […] Differences in symptom severity were not observed between vaccinated and unvaccinated participants with A/H1N1 infection. […] Our findings suggest that influenza vaccine, while moderately effective in preventing disease outright, mitigates the perceived severity and duration of symptoms, while potentially providing benefit in lessening the likelihood of severe disease and/or complications due to influenza.

• #1 Flu Facts | Washington State Department of Health

  https://doh.wa.gov/you-and-your-family/illness-and-disease-z/flu/flu-facts

  What are the symptoms of flu? […] People with flu often have: […] Fever […] Cough […] Sore throat […] Runny or stuffy nose […] Body aches […] Fatigue (tiredness) […] Headache […] Vomiting or diarrhea (this is more common in kids than adults) […] […] […] If you have severe flu symptoms, contact your doctor, nurse, or clinic as soon as possible, especially if you are at high risk of developing flu-related complications (CDC). The best way to tell if you have flu is for a health care provider to swab your throat and have a lab confirm the diagnosis. If you have the flu, your provider may prescribe antiviral drugs for treatment. […] […] […] People who have been vaccinated against flu can still sometimes catch the flu, but their flu illness is usually less severe. Studies show flu vaccination to have other benefits like reduced deaths, reduced admissions to the Intensive Care Unit (ICU), and reduced length of hospital stays.

• #1 Misconceptions about Seasonal Flu and Flu Vaccines | NYP

  https://www.nyp.org/pediatrics/tip-sheets/misconceptions-about-seasonal-flu-and-flu-vaccines

  There are several reasons why someone might get a flu-like illness, even after they have been vaccinated against flu: One reason is that some people can become ill from other respiratory viruses besides flu such as rhinoviruses, which are associated with the common cold, cause symptoms similar to flu, and also spread and cause illness during the flu season. The flu vaccine only protects against influenza viruses, not other viruses. […] The final explanation for experiencing flu-like symptoms after vaccination is that unfortunately, the flu vaccine doesn’t always provide adequate protection against the flu. This is more likely to occur among people that have weakened immune systems or people age 65 and older.

• #1 Influenza (Flu) Vaccine Safety | Vaccine Safety | CDC

  https://www.cdc.gov/vaccine-safety/vaccines/flu.html

  Common side effects […] Most side effects reported after flu vaccination are mild and disappear on their own in a few days without treatment. […] Injection site reactions that include soreness, redness, and swelling at the injection site […] Fever […] Muscle Aches […] Headache […] Fatigue […] In children […] Runny nose […] Wheezing […] Headache […] Vomiting […] Muscle aches […] Fever (low grade) […] In adults […] Runny nose […] Headache […] Sore throat […] Cough […] Severe allergic reactions following vaccination are rare but can be life threatening. If someone shows signs of a severe allergic reaction such as hives, swelling of the face and throat, or difficulty breathing call 911.

• #1 Influenza vaccines – frequently asked questions (FAQs) | NCIRS

  https://ncirs.org.au/influenza/influenza-vaccines-frequently-asked-questions-faqs

  More serious side effects following influenza vaccination are very rare. Anaphylaxis occurs in approximately 1 in 1 million people who receive an influenza vaccine. […] The only absolute contraindication to influenza vaccines is diagnosed anaphylaxis to a previous dose of any influenza vaccine or anaphylaxis after receipt of any component of an influenza vaccine.

• #1 Why You May Feel Sick After a Flu Shot

  https://www.verywellhealth.com/why-did-i-get-sick-after-a-flu-shot-770535

  You may feel sick after a flu shot, not because it gave you the flu but because of side effects that make you feel unwell. These may include headache, muscle aches, chills, and feeling fatigued. […] Flu-like symptoms such as fatigue, muscle aches, and fever typically affect less than 1% of those who get the flu vaccine. […] Symptoms of anaphylaxis, the most severe type of allergic reaction, may include: Trouble breathing, Swelling around the lips and eyes, Hives, Wheezing, Rapid heartbeat, Dizziness or weakness, Pale skin. […] It is also possible that you contracted an illness other than the flu. Vaccinated individuals who do get sick typically have less severe symptoms and complications.

• #1 Here’s How Long Flu Shot Side Effects Last, If You Experience Them at All | SELF

  https://www.self.com/story/how-long-do-flu-shot-side-effects-last

  Some people may have an allergic reaction to a component in the flu vaccine, like egg protein, but this is fairly rare. […] If you do experience an allergic reaction to the vaccine in general, it usually happens within a few minutes to a few hours after you get the shot, according to the CDC. […] And, you may already know this, but well say it louder for everyone in the back: The flu shot cant actually give you the flueverno matter the circumstances.

• #1 Vaccine Injury and Death | Pain After Flu Shot

  https://vaccinelaw.com/vaccine-side-effects/flu-vaccine-attorney/

  Any other type of pain after a flu shot may be symptomatic of a flu vaccine injury or illness. Injuries and illnesses that have been linked to the annual flu shot include: Anaphylaxis (severe allergic reaction), Chronic inflammatory demyelinating polyneuropathy (CIDP), Guillain-Barre Syndrome (GBS), Parsonage-Turner Syndrome (Brachial Neuritis), Shoulder Injury Related To Vaccine Administration (SIRVA). […] Early symptoms of GBS can include: Difficulty controlling facial movements, including talking, chewing and swallowing, Difficulty maintaining balance and walking steadily, Muscle weakness that progressively worsens, Severe pain that extends to the lower back, Tinging or “prickling” sensation in the fingers and toes. […] Since flu shot injuries and illnesses vary broadly in their specific causes and effects, treatment options are dependent upon each patient’s individual diagnosis. However, the costs of medical treatment and rehabilitation can be substantial. Individuals diagnosed with GBS and other flu shot injuries can experience a loss of income, chronic pain and other losses as well, and these are all losses that can be recovered under the VICP.

• #1 Flu Shot Side Effects: Common, More Serious, and More

  https://www.healthline.com/health/flu-shot-side-effects

  A fever of 101F (38C) or less is a common side effect of the flu shot. A slight fever is considered a mild side effect. It should go away within a day or two. […] Serious side effects are rare with the flu shot, but they can include: […] A fever greater than 101F (38C) isn’t common. If you’re concerned about a high fever, call your doctor. […] Rarely, the flu vaccine can cause a severe allergic reaction. Severe allergic reactions usually happen within a few hours of receiving the vaccine. Symptoms include: hives, swelling, trouble breathing, fast heart rate, dizziness, weakness. […] In very rare cases, some people who have received the flu vaccine have experienced Guillain-Barr syndrome (GBS). GBS is a neurologic condition that causes weakness and paralysis throughout your body. However, it’s not clear if the flu vaccine is the actual cause of GBS in these cases.

• #1 Flu vaccine FAQs | healthdirect

  https://www.healthdirect.gov.au/flu-vaccine-faqs

  The flu vaccine is not an mRNA vaccine. […] Up to 1 in 10 people have side effects from the flu shot that are similar to the early signs of the flu. These may include: fever, tiredness, muscle aches. […] These side effects can start within a few hours of having your shot. They usually last for 1 to 2 days. […] Its also rare for people with egg allergy to experience side effects after getting the flu shot, such as hives, wheezing, vomiting or abdominal pain. […] A febrile seizure can happen in a child with a fever (high temperature). Febrile seizures affect up to 1 in 20 children aged between 6 months and 6 years old. […] There have been rare cases of febrile seizures in young children after flu vaccination. But fever associated with having the flu causes more febrile seizures in children than flu shots.

• #1 How to Relieve a Flu Shot’s Side Effects

  https://www.vaccineinjuryteam.com/how-to-relieve-a-flu-shots-side-effects/

  Getting the flu shot is important, and many people will get the shot annually. While you might think it is safe and better than getting the flu, there can be some severe side effects. Depending on individual circumstances, the vaccines side effects might be worse than getting the flu. […] If you suffer severe pain or other side effects after a flu vaccine, a more significant problem is likely happening. You could suffer nerve damage, SIRVA, allergic reactions, or an infection. Muscle weakness and paralysis are also possible. […] While these are the most common types of people who may suffer flu complications, anyone can. […] While the flu shot can help prevent the flu and complications from the virus, the shot can also cause many side effects. […] Mild side effects can go away within a few days. They are usually not cause for concern. However, severe allergic reactions and other side effects can lead to lifelong conditions.

• #1 Flu vaccine | NHS inform

  https://www.nhsinform.scot/healthy-living/immunisation/vaccines/flu-vaccine/

  Influenza (flu) is an infectious virus and can be serious. Symptoms may include a fever, a cough, a headache and tiredness. […] Flu can be serious, even if you’re healthy. For some people, it can lead to complications that may require hospital care or may even cause death. […] If you do get flu and have been vaccinated, the symptoms are likely to be milder and not last as long. This will reduce your risk of needing to go to hospital with serious flu illness. […] Like all medicines, the flu vaccine can cause side effects. This is normal but not everyone gets them. It shows the vaccine is teaching your body’s immune system how to protect itself from the disease. […] These potential side effects are much less serious than flu or complications associated with flu. […] Side effects are usually mild and may include: tenderness, swelling and/or redness at the site of the injection, headache, muscle aches, fever (temperature 38C or above). […] You may also feel generally unwell. These possible side effects usually go away within a few days.

• #1 Flu (Influenza): Causes, Symptoms, Types & Treatment

  https://my.clevelandclinic.org/health/diseases/4335-influenza-flu

  Symptoms of the flu usually come on quickly, and can include: Fever. Chills. Body aches. Cough. Headache. Sore throat. Runny or stuffy nose (congestion). Tiredness or feeling run down. Diarrhea or vomiting (usually only in kids). […] The influenza virus causes flu. Influenza A, B and C are the most common types that infect people. Influenza A and B are seasonal (most people get them in the winter) and have more severe symptoms. Influenza C doesn’t cause severe symptoms and it’s not seasonal the number of cases stays about the same throughout the year. […] Most people are able to manage flu symptoms at home and recover within a few days to a week. Because it can cause severe illness, it’s important to keep an eye on your symptoms and get medical attention if you need it. This is especially important if you have an underlying health condition.

• #1 2024-25 Flu Season – Vaccinate Your Family 2024-25 Flu Season – Vaccinate Your Family

  https://vaccinateyourfamily.org/vaccines-diseases/current-flu-season/

  Flu Symptoms & Diagnosis […] Common flu symptoms usually come on suddenly and can include: […] Fever or feeling feverish/chills (note that not everyone with flu will have a fever) […] Cough […] Sore throat […] Runny or stuffy nose […] Muscle or body aches […] Headaches […] Fatigue (tiredness) […] Vomiting and diarrhea may be common in children […] Especially with flu and COVID circulating together – along with other respiratory diseases like RSV – it’s important to be properly diagnosed to determine appropriate treatment. There are a number of tests available to determine if you have the flu. Your healthcare provider may test you for flu or diagnose you based on your symptoms. […] If you do get sick with flu, antiviral drugs – which are prescription medications – are a treatment option. These medications are most effective if taken early – within 48 hours (2 days) of getting sick. Antivirals can lessen your flu symptoms, shorten duration of illness, and help prevent severe flu illness and related complications. Antivirals are NOT a substitute for annual flu vaccination.

• #1 Flu Shots, Prevention, Symptoms and Care | Froedtert & MCW

  https://www.froedtert.com/flu

  Flu symptoms typically come on suddenly and include some or all of the following: Fever or chills, Cough, Sore throat, Runny or stuffy nose, Muscle or body aches, Fatigue, Vomiting, diarrhea (more common in children than adults). […] The flu, like the common cold, is a virus. It starts suddenly and usually develops with a bad sore throat, body aches, high fever (above 101 degrees Fahrenheit) and, at times, a runny nose. […] Symptoms usually appear one to four days after exposure to the flu virus and typically last about five days. Symptoms will usually go away within one to two weeks.

• #1 Flu (Influenza): Causes, Symptoms, Types & Treatment

  https://my.clevelandclinic.org/health/diseases/4335-influenza-flu

  Flu can last from a few days to two weeks. Symptoms like fever and body aches can come on suddenly but usually go away faster than other symptoms. A cough or runny nose can last longer. […] The flu virus itself can cause complications or it can weaken your immune system and allow bacteria to infect different parts of your body (secondary infection). Complications and secondary infections include: Ear infections. Sinus infections. Severe lung infection (pneumonia). Pneumonia can lead to acute respiratory distress syndrome (ARDS) and other life-threatening conditions. Pregnancy loss (miscarriage). Neural tube defects (NTDs) in the developing fetus of a pregnant woman. […] In a typical flu season in the U.S., it’s estimated that between 20,000 and 50,000 people die from the flu. Another 300,000 to 500,000 require hospitalization for serious illness.

• #1 Misconceptions about Seasonal Flu and Flu Vaccines | NYP

  https://www.nyp.org/pediatrics/tip-sheets/misconceptions-about-seasonal-flu-and-flu-vaccines

  No, a flu shot cannot cause flu illness. The influenza viruses contained in a flu shot are inactivated (killed), which means they cannot cause infection. […] The most common reaction to the flu shot in adults has been soreness, redness or swelling at the spot where the shot was given. This usually lasts less than two days. This initial soreness is most likely the result of the bodys early immune response reacting to a foreign substance entering the body. Other reactions following the flu shot are usually mild and can include a low grade fever and aches. If these reactions occur, they usually begin soon after the shot and last 1-2 days. The most common reactions people have to flu vaccine are considerably less severe than the symptoms caused by actual flu illness. […] People also may have mild reactions to the nasal spray vaccine. Some children and young adults 2-17 years of age have reported experiencing mild reactions after receiving nasal spray flu vaccine, including runny nose, nasal congestion or cough, chills, tiredness/weakness, sore throat and headache. Some adults 18-49 years of age have reported runny nose or nasal congestion, cough, chills, tiredness/weakness, sore throat and headache. These side effects are mild and short-lasting, especially when compared to symptoms of seasonal influenza infection.

• #1 How to Relieve Flu Shot Side Effects Quickly and Easily

  https://www.myvaccinelawyer.com/vaccine-injury-lawyer/resources/vaccine/flu/side-effects/relieve/

  To relieve flu shot side effects, start by applying a cold compress to the injection site right after getting the shot to reduce pain and swelling. After 24 hours, switch to a warm compress to help ease any remaining soreness. Additionally, moving your arm around gently through simple exercises like stretching or rotating can prevent stiffness and improve comfort. For general side effects such as a mild fever or headaches, over-the-counter pain relievers such as acetaminophen or ibuprofen can help. […] Up to 80% of people experience side effects after getting the flu shot, according to the Centers for Disease Control and Prevention (CDC). […] While these side effects are usually mild and short-lived, they can be uncomfortable. […] Although the flu shot prevents the flu, some people may experience side effects ranging from mild to severe allergic reactions after vaccination. If the side effects are mild, they should disappear within a few days.

• #1

  https://www.prevention.com/health/a62724657/flu-shot-2024-side-effects/

  Yes, you can have an allergic reaction to the flu shot. Its relatively rare, though, Dr. Russo says. […] But Dr. Russo also points out that having flu shot side effects isnt the same as having an allergic reaction. Allergic reactions would be getting hives elsewhere, wheezing, shortness of breath, or a more severe reaction like anaphylaxis, Dr. Russo says. […] Again, most people who have flu shot side effects only have a sore arm, if that. But some people will have things like muscle aches, headache, or flu-like symptoms. If you fall into this camp, Dr. Russo says that youre fine to take an OTC pain reliever, like Tylenol or ibuprofen. […] If you have constant pain, swelling, a severe rash, or symptoms of an allergic reaction, Dr. Russo says you should seek medical care.

• #1 Here’s How Long Flu Shot Side Effects Last, If You Experience Them at All | SELF

  https://www.self.com/story/how-long-do-flu-shot-side-effects-last

  There are some cases where you might experience shoulder pain after your shot. This can last for a couple days to about a week, or longer in rare instances. […] However, there does seem to be one exceptionpeople ages 65 and older, Dr. Abazia says, depending on what vaccine they are given. […] For example, the Fluzone High-Dose vaccine, specifically, contains four times more antigen (dead bits of influenza virus that spur your body to make antibodies) than the standard doseswhich means they can cause more side effects, like fever, muscle pain, and headache. […] Theres really no way to prevent influenza vaccine side effects, but you can take some steps to reduce how hard some of them hit you. […] Again, any discomfort post-vaccine should be pretty short-lived. But if youre not feeling great, there are a few things you can do to try to speed up your recovery time:

• #1 Influenza | Health & Senior Services

  http://www.health.mo.gov/flu

  If you get the flu, get plenty of rest, drink a lot of liquids, and avoid using alcohol and tobacco. Also, you can take medications such as Tylenol to relieve the fever and muscle aches associated with the flu. Never give aspirin to children or teenagers who have flu-like symptoms, particularly fever. Stay home for at least 24 hours after your fever is gone without the use of a fever-reducing medicine, except to get medical care or other necessities.

• #1 Flu shot yesterday, sick today: Is this normal?

  https://www.medicalnewstoday.com/articles/flu-shot-yesterday-sick-today

  Side effects after receiving the flu vaccine are rare and last only a few days. The side effects of the vaccination are much less severe than the symptoms of the flu. […] People who develop a high fever, behavioral changes, or allergic reactions following administration of a flu shot should seek emergency medical attention.

• #1 How to Relieve a Flu Shot’s Side Effects

  https://www.vaccineinjuryteam.com/how-to-relieve-a-flu-shots-side-effects/

  When the flu shot leaves you with severe side effects, you should seek immediate medical attention. You could be left with a life-altering condition from these side effects. […] Other vaccine injuries are possible, and you may suffer these reactions if a medical provider administers the vaccine incorrectly. […] Chest pain after the flu shot is more common than you would think. It is an immune system response and causes inflammation and discomfort in your chest. […] Side effects will vary for everyone. If you experience mild side effects, try at-home remedies. However, you should get medical attention immediately if you suffer severe vaccine side effects. […] Different treatment options are available if you suffer a severe flu shot injury. […] Anaphylaxis is a severe allergic reaction. It is vital to move quickly to treat this reaction.

• #1 High-dose flu vaccines: How are they different from other flu vaccines?

  https://www.mayoclinic.org/diseases-conditions/flu/expert-answers/fluzone/faq-20058032

  High-dose and adjuvanted flu vaccines can help people have a stronger immune response against influenza. […] Among people age 65 and older, high-dose and adjuvanted flu vaccines help prevent flu-related hospital stays better than the standard flu vaccines do. That’s based on research from past flu seasons. […] Compared with the standard flu vaccine, people who get the high-dose vaccine are more likely to have side effects. These include: Headache. Soreness, pain or a change in skin color at the site of the shot. Muscle aches. Feeling very tired. […] Side effects after the high-dose vaccine most often happened during the week after getting the vaccine.

• #1 Your Child’s Vaccines: Influenza (Flu) Vaccine (for Parents) | Nemours KidsHealth

  https://kidshealth.org/en/parents/flu-vaccine.html

  The flu vaccine protects against influenza (what most of us call „the flu”), a contagious viral infection of the nose, throat, and lungs that can make a person feel very sick. […] While the flu vaccine isn’t 100% effective, it still greatly lowers a person’s chances of catching the flu, which can be very serious. It also can make symptoms less severe if someone who got the vaccine does still get the flu. […] Both types of vaccine can cause mild side effects. […] The flu shot usually is given as an injection in the upper arm or thigh (depending on a person’s age). It contains killed flu virus and can’t cause someone to get the flu. But it can cause soreness, redness, or swelling at the injection site. Rarely, it might cause a low fever or body aches. […] The nasal spray flu vaccine contains weakened live flu viruses. So it may cause mild cold-like symptoms, such as a runny nose, sore throat, or tiredness. Like the shot, it can sometimes cause a low fever or body aches. But the weakened virus isn’t strong enough to grow in the lungs, so it will not cause serious illness. […] Very rarely, the flu vaccine can cause a serious allergic reaction.

• #1 5 myths about the flu vaccine

  https://www.who.int/news-room/spotlight/influenza-are-we-ready/5-myths-about-the-flu-vaccine

  As many as 650 000 people a year can die of the flu. This only represents respiratory deaths, so the likely impact is even higher. Even healthy people can get the flu, but especially people whose immune systems are vulnerable. Most people will recover within a few weeks, but some can develop complications including sinus and ear infections, pneumonia, heart or brain inflammations. […] If you feel achy or slightly feverish, it is a normal reaction of the immune system to the vaccine, and generally lasts only a day or two. […] Severe side effects are extremely rare. One in a million people may get Guillain-Barr Syndrome (GBS), which cause muscle weakness and paralysis. […] However, being vaccinated improves the chance of being protected from the flu. This is especially important to stop the virus affecting people with vulnerable immune systems. […] The inactivated flu vaccine is safe at any stage of pregnancy.

• #1 The flu jab in pregnancy – NHS

  https://www.nhs.uk/pregnancy/keeping-well/flu-jab/

  A flu jab will help protect both you and your baby. […] Pregnancy changes how the body responds to infections such as flu. There is good evidence that pregnant women have a higher chance of developing complications if they get flu, particularly in the later stages of pregnancy. […] Young babies also have a higher risk of getting seriously ill if they get flu. Having flu increases the chances of pregnant women and their babies needing intensive care. […] One of the most common complications of flu is bronchitis, a chest infection that can become serious and develop into pneumonia. […] If you have flu while you’re pregnant, it could cause your baby to be born prematurely or have a low birthweight, and may even lead to stillbirth or death. […] Some people get a slightly raised temperature and aching muscles for a couple of days afterwards, and you may feel sore at the injection site. […] If you do have flu, there’s a prescribed medicine you can take that might help, or reduce your risk of complications, but it needs to be taken very soon after symptoms appear.

• #1 8 things doctors wish patients knew about flu vaccines | American Medical Association

  https://www.ama-assn.org/delivering-care/public-health/8-things-doctors-wish-patients-knew-about-flu-vaccines

  Older adults are a higher-risk population. They have slightly different vaccine options that are designed to protect them a little bit more, she said. Because they are also clearly one of those high-risk populations for COVID, it is even more important for them to protect themselves against the flu as well. […] Even if we do develop the flu, we’re less likely to need to be hospitalized and it tends to be less severe if you get the vaccine, said Dr. Kirley. It is also about protecting othersyour family, friends, community members. […] The flu vaccine is most effective for all of us when more of us get it, so we can get closer to achievingat least for flu seasonthat herd immunity, she said. Getting the flu shot is not just doing something for yourself, but it definitely is a way you can contribute to good health in your community.

• #2 Flu shot: Your best bet for avoiding influenza

  https://www.mayoclinic.org/diseases-conditions/flu/in-depth/flu-shots/art-20048000

  Getting a flu vaccine is the best way to prevent the flu and its complications for almost everyone. […] But you might develop flu-like symptoms despite getting a flu vaccine for many reasons, including: […] Some people have muscle aches and a fever for a day or two after receiving a flu vaccine. This may be a side effect of your body’s production of protective antibodies. […] It takes about two weeks for the flu shot to take full effect. If you’re exposed to the influenza virus shortly before or during that time period, you might catch the flu. […] In some years, the influenza viruses used for the vaccine don’t match the viruses spreading during the flu season. If this occurs, your flu shot will be less effective. But it may still offer some protection. […] Many other illnesses, such as COVID-19, also have flu-like symptoms. So you may think you have the flu when you actually don’t.

• #2 Influenza Vaccine: Benefits & Side Effects

  https://my.clevelandclinic.org/health/drugs/18888-influenza-virus-vaccine-injection

  The influenza vaccine reduces your risk of getting influenza or the flu. The flu causes fever, head and body aches, coughing and a stuffy or runny nose. […] Report any side effects that do not go away within 3 days to your doctor or health care professional. Call your health care provider if any unusual symptoms occur within 6 weeks of receiving this vaccine. […] Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome): fever, headache, muscle aches and pains, pain, tenderness, redness, or swelling at the injection site, tiredness.

• #2 Influenza (Flu) Vaccine Safety | Vaccine Safety | CDC

  https://www.cdc.gov/vaccine-safety/vaccines/flu.html

  Common side effects […] Most side effects reported after flu vaccination are mild and disappear on their own in a few days without treatment. […] Injection site reactions that include soreness, redness, and swelling at the injection site […] Fever […] Muscle Aches […] Headache […] Fatigue […] In children […] Runny nose […] Wheezing […] Headache […] Vomiting […] Muscle aches […] Fever (low grade) […] In adults […] Runny nose […] Headache […] Sore throat […] Cough […] Severe allergic reactions following vaccination are rare but can be life threatening. If someone shows signs of a severe allergic reaction such as hives, swelling of the face and throat, or difficulty breathing call 911.

• #2 The Influenza (Seasonal Flu) Vaccine: Side Effects, Effectiveness, and Schedule

  https://www.webmd.com/cold-and-flu/fact-sheet-vaccines

  The flu vaccine is the most effective way to prevent the flu. It takes about 2 weeks for it to protect you. Theres still a chance you could get the flu after you get vaccinated. That depends on many things, like your age and how healthy you are. It also depends on how closely the vaccine matches the type of flu that is going around. Even if you do get sick, theres a good chance your illness will be milder. […] You cant get the flu from the flu vaccine. But you may have side effects that mimic cold or flu symptoms. Some of these are: Soreness or swelling where you got the shot, Aching, Nausea, Slight fever. […] The nasal spray vaccine can also cause runny nose, headache, vomiting, fever, wheezing, and muscle aches. […] Call 911 if you have any of the following symptoms after you get a flu vaccine. They can be a sign of a severe reaction: High fever, Hoarseness, Weakness, Paleness, Dizziness, Racing heart, Trouble breathing, Hives, Swelling around the lips or eyes, Changes in behavior.

• #2 Influenza vaccines – frequently asked questions (FAQs) | NCIRS

  https://ncirs.org.au/influenza/influenza-vaccines-frequently-asked-questions-faqs

  Influenza is caused by infection with the influenza virus and results in respiratory illness. […] Common symptoms include: fever, dry cough, nasal congestion, headache, sore throat, general symptoms such as feeling unwell, muscle aches, and pains and fatigue. […] The immune response of the body after vaccination may result in side effects that are similar to early influenza symptoms however, these generally only last for 1-2 days and are much milder than the symptoms of actual influenza. […] Between 1% and 10% of people who have an influenza vaccine experience a fever, headache, general tiredness or muscle aches. These symptoms can last for 1-2 days. […] In rare circumstances, infants and children who receive an influenza vaccine may experience a type of seizure known as a febrile convulsion.

• #2 Flu shot side effects and how to manage them | MD Anderson Cancer Center

  https://www.mdanderson.org/cancerwise/flu-shot-side-effects-and-how-to-manage-them.h00-159701490.html

  Side effects after a flu shot can be uncomfortable, but do they mean you shouldnt get vaccinated? […] The most common side effects of the flu shot include: Injection site pain, Headache, Muscle aches, Fatigue. […] The symptoms of getting a flu shot are generally mild, especially when compared to influenza itself. […] Most of the common side effects like those listed above typically appear shortly after receiving your shot. […] These symptoms are typically mild and last a short period of time. They usually resolve within 24 to 48 hours. […] While some people may still get the flu after vaccination, their disease course is typically milder than if they didnt get vaccinated. […] The benefits of a flu shot outweigh the temporary discomfort of side effects.

• #2 Influenza (flu) vaccine | Australian Government Department of Health and Aged Care

  https://www.health.gov.au/topics/immunisation/vaccines/influenza-flu-vaccine

  Influenza vaccination is a safe and effective way to protect yourself and your family from serious disease caused by influenza. […] You may experience minor side effects following vaccination. Most reactions are mild and only last a couple of days and you will recover without any problems. […] Common side effects of influenza vaccines include: drowsiness or tiredness, muscle aches, pain, redness and swelling at injection site, occasionally an injection-site lump (may last many weeks – no treatment needed), mild fever. […] Talk to your health professional about possible side effects of the influenza vaccines, or if you or your child have side effects that worry you.

• #2 Flu vaccine – NHS

  https://www.nhs.uk/vaccinations/flu-vaccine/

  The most common side effects of the flu vaccine are mild and get better within 1 to 2 days. […] They can include: pain or soreness where the injection was given, a slightly raised temperature, an aching body. […] More serious side effects such as a severe allergic reaction (anaphylaxis) are very rare. The injected flu vaccines used in the UK do not contain live flu viruses. They cannot give you flu. […] There’s still a chance you might get flu after getting vaccinated, but it’s likely to be milder and not last as long. […] The vaccine usually takes up to 14 days to work. […] Protection from the flu vaccine goes down with time and the types of flu virus the vaccine protects against are updated each year. This is why it’s important to get the flu vaccine every year.

• #2 Influenza vaccine – common questions | Healthify

  https://healthify.nz/medicines-a-z/i/influenza-vaccine-common-questions

  Getting the flu vaccination is the best way to protect yourself and others from getting the flu. […] Even if you catch the flu after having the vaccination, your symptoms are likely to be milder, you are likely to have fewer sick days and you’re less likely to pass it onto others. […] Getting a vaccine may not stop you getting flu, but it means you’re less likely to get very sick. It takes up to 2 weeks after your flu vaccination for your body’s immune system to protect you against flu. […] The vaccine can’t cause the flu because it doesn’t contain any live virus. The vaccine stimulates an immune response which can include flu-like symptoms (eg, fever, headache and tiredness). This creates immunity but doesn’t cause the illness. Most people tolerate the vaccine well. […] Any after-effects from the vaccine are usually mild and last 1 to 2 days. They may include: soreness, aching and/or redness at the injection site, tiredness, feeling a little unwell or having a mild fever. […] These are signs that your immune system is working. Contact your healthcare provider if you have a more severe reaction to the flu vaccination or if you’re worried.

• #2 Key Facts About Seasonal Flu Vaccine | Influenza (Flu) | CDC

  https://www.cdc.gov/flu/vaccines/keyfacts.html

  Influenza (flu) is a potentially serious disease that can lead to hospitalization and sometimes even death. […] Complications of flu can include bacterial pneumonia, ear infections, sinus infections and worsening of chronic medical conditions, such as congestive heart failure, asthma, or diabetes. […] While some people who get a flu vaccine may still get sick with influenza, flu vaccination has been shown in several studies to reduce severity of illness. […] It’s possible to get sick with flu even if you have been vaccinated (although you won’t know for sure unless you get a flu test). […] Some people who get vaccinated may still get sick with flu. However, flu vaccination has been shown in studies to reduce severity of illness in people who get vaccinated but still get sick.

• #2 Frequently Asked Questions – Vaccine | Comprehensive Influenza Protection Program | ECU

  https://flu-prevention.ecu.edu/faq-vaccine/

  The flu vaccine will protect you for one flu season. It is designed to protect you from the strains of influenza that are expected to circulate during that season. […] Influenza vaccines (the flu shot) cause antibodies to develop in the body. These antibodies provide protection against infection with the viruses that are in the vaccine. […] The ability of flu vaccine to protect a person depends on two things: 1) the age and health status of the person being vaccinated, and 2) the similarity (match) between the virus strains in the vaccine and those circulating in the community. If the match is good, vaccine effectiveness is higher, but if the match isn’t close, the effectiveness can be reduced. […] No! It takes about two weeks after the vaccination for antibodies to develop in the body and provide protection against the influenza viruses. In the meantime, people are still at risk for getting the flu. […] Minor side effects that could occur are soreness, redness, or swelling where the shot was given, a mild fever, or body aches. These usually last one to two days. On very rare occasions, the vaccine can cause serious problems such as severe allergic reactions.

• #2 Misconceptions about Seasonal Flu and Flu Vaccines | NYP

  https://www.nyp.org/pediatrics/tip-sheets/misconceptions-about-seasonal-flu-and-flu-vaccines

  There are several reasons why someone might get a flu-like illness, even after they have been vaccinated against flu: One reason is that some people can become ill from other respiratory viruses besides flu such as rhinoviruses, which are associated with the common cold, cause symptoms similar to flu, and also spread and cause illness during the flu season. The flu vaccine only protects against influenza viruses, not other viruses. […] The final explanation for experiencing flu-like symptoms after vaccination is that unfortunately, the flu vaccine doesn’t always provide adequate protection against the flu. This is more likely to occur among people that have weakened immune systems or people age 65 and older.

• #2 Flu (Influenza): Causes, Symptoms, Types & Treatment

  https://my.clevelandclinic.org/health/diseases/4335-influenza-flu

  Flu can last from a few days to two weeks. Symptoms like fever and body aches can come on suddenly but usually go away faster than other symptoms. A cough or runny nose can last longer. […] The flu virus itself can cause complications or it can weaken your immune system and allow bacteria to infect different parts of your body (secondary infection). Complications and secondary infections include: Ear infections. Sinus infections. Severe lung infection (pneumonia). Pneumonia can lead to acute respiratory distress syndrome (ARDS) and other life-threatening conditions. Pregnancy loss (miscarriage). Neural tube defects (NTDs) in the developing fetus of a pregnant woman. […] In a typical flu season in the U.S., it’s estimated that between 20,000 and 50,000 people die from the flu. Another 300,000 to 500,000 require hospitalization for serious illness.

• #2 Flu Vaccine Side Effects: Common and Rare

  https://www.health.com/condition/flu/flu-shot-side-effects

  There’s always a small percentage of people who have a headache and muscle aches or pains the next day. These aches and pains typically develop on the day you receive the flu shot and go away a few days after. […] Some people can feel dizzy or faint after getting a flu vaccine. […] Severe side effects from the flu vaccine are very rare. However, some people can develop an uncommon neurological disease called Guillain-Barr syndrome (GBS) or a severe allergic reaction. […] One rare side effect is GBS, which is a neurological disease that causes muscle weakness and paralysis. […] Severe allergic reactions are extremely rare, affecting fewer than one or two in one million people. Signs of a severe allergic reaction can include difficulty breathing, dizziness, hives, hoarseness or wheezing, paleness, rapid heartbeat, and swelling around the lips or eyes.

• #2 Flu Jab: Who Should Have It, Benefits, and Side-Effects

  https://patient.info/infections/influenza-and-flu-like-illness/immunisation-for-flu

  Getting the flu jab reduces the risk of catching flu, and also reduces the chances of becoming seriously unwell with flu. […] Most people get few, or no, side-effects from the flu jab. Common side-effects are: soreness, pain, bruising, or redness at the injection site; a mild raised temperature (fever); muscle aches; a headache; nausea (feeling sick); feeling generally unwell. […] The injected flu vaccines do not contain a live flu virus. They cannot cause a flu infection. […] Serious reactions to the flu vaccine can occur, but are very rare. Severe allergic reactions (anaphylaxis) occur in about 1 per million people who have the flu vaccine. […] Other, very rare, reactions have been reported after the flu vaccine, such as inflammation of nerves (Guillain-Barr syndrome) and inflammation of the brain (encephalitis). The risk seems to be about 1 per million people who have the vaccine. However, there is very limited evidence that the vaccine is directly responsible for these problems, and some scientists have suggested that they may not be linked at all.

• #2 Flu Shot Side Effects: Common, More Serious, and More

  https://www.healthline.com/health/flu-shot-side-effects

  A fever of 101F (38C) or less is a common side effect of the flu shot. A slight fever is considered a mild side effect. It should go away within a day or two. […] Serious side effects are rare with the flu shot, but they can include: […] A fever greater than 101F (38C) isn’t common. If you’re concerned about a high fever, call your doctor. […] Rarely, the flu vaccine can cause a severe allergic reaction. Severe allergic reactions usually happen within a few hours of receiving the vaccine. Symptoms include: hives, swelling, trouble breathing, fast heart rate, dizziness, weakness. […] In very rare cases, some people who have received the flu vaccine have experienced Guillain-Barr syndrome (GBS). GBS is a neurologic condition that causes weakness and paralysis throughout your body. However, it’s not clear if the flu vaccine is the actual cause of GBS in these cases.

• #2 5 myths about the flu vaccine

  https://www.who.int/news-room/spotlight/influenza-are-we-ready/5-myths-about-the-flu-vaccine

  As many as 650 000 people a year can die of the flu. This only represents respiratory deaths, so the likely impact is even higher. Even healthy people can get the flu, but especially people whose immune systems are vulnerable. Most people will recover within a few weeks, but some can develop complications including sinus and ear infections, pneumonia, heart or brain inflammations. […] If you feel achy or slightly feverish, it is a normal reaction of the immune system to the vaccine, and generally lasts only a day or two. […] Severe side effects are extremely rare. One in a million people may get Guillain-Barr Syndrome (GBS), which cause muscle weakness and paralysis. […] However, being vaccinated improves the chance of being protected from the flu. This is especially important to stop the virus affecting people with vulnerable immune systems. […] The inactivated flu vaccine is safe at any stage of pregnancy.

• #2 Flu Shot Side Effects and Risks: What Are the Facts?

  https://www.everydayhealth.com/flu/the-facts-on-flu-vaccine-risks/

  Many people are concerned that side effects of the flu shot could be worse than getting the flu itself, notes Dr. Horney. […] The potential risks of a severe case of influenza far outweigh any very limited risk of side effects from the vaccine, she says. […] Some people equate the flu with having a bad cold. […] Some people who get the flu will develop complications such as pneumonia, inflammation of the heart (myocarditis), inflammation of the brain (encephalitis), or respiratory failure, which can lead to hospitalization and death, notes the CDC. […] Its possible to get the flu even if youve been immunized. […] Although its an extremely uncommon reaction to the flu vaccine, a very small number of individuals may develop Guillain-Barr syndrome (GBS), a rare disorder in which the bodys immune system attacks nerve cells, causing muscle weakness and sometimes paralysis. […] The CDC estimates that the risk of GBS after vaccination is fewer than one or two cases per one million people.

• #2 Influenza (flu) – immunisation | Better Health Channel

  https://www.betterhealth.vic.gov.au/health/healthyliving/flu-influenza-immunisation

  Possible side effects of the flu vaccine include drowsiness or tiredness, muscle aches, localized pain, redness and swelling at the injection site, occasionally, an injection-site lump (nodule) that may last many weeks but needs no treatment, and low-grade temperature (fever). […] Common side effects following immunisation are usually mild and temporary (occurring in the first 2 days after vaccination). […] If the side effects following immunisation are unexpected, persistent, or severe, or if you are worried about yourself or your child’s condition after a vaccination, see your doctor or immunisation nurse as soon as possible or go directly to a hospital. […] There is a very small risk of a serious allergic reaction (anaphylaxis) to any vaccine. […] Apart from anaphylaxis, other extremely rare side effects include febrile convulsions in children. […] A small increase in Guillain-Barr syndrome was seen in the US in 1976, but since that time, surveillance has shown that it is limited to one case for every million doses of the flu vaccine, if at all.

• #2 How to Relieve a Flu Shot’s Side Effects

  https://www.vaccineinjuryteam.com/how-to-relieve-a-flu-shots-side-effects/

  When the flu shot leaves you with severe side effects, you should seek immediate medical attention. You could be left with a life-altering condition from these side effects. […] Other vaccine injuries are possible, and you may suffer these reactions if a medical provider administers the vaccine incorrectly. […] Chest pain after the flu shot is more common than you would think. It is an immune system response and causes inflammation and discomfort in your chest. […] Side effects will vary for everyone. If you experience mild side effects, try at-home remedies. However, you should get medical attention immediately if you suffer severe vaccine side effects. […] Different treatment options are available if you suffer a severe flu shot injury. […] Anaphylaxis is a severe allergic reaction. It is vital to move quickly to treat this reaction.

• #2 8 things doctors wish patients knew about flu vaccines | American Medical Association

  https://www.ama-assn.org/delivering-care/public-health/8-things-doctors-wish-patients-knew-about-flu-vaccines

  It typically falls somewhere between 40% and 60% effectiveness, she said. Even when the vaccine is only 30% effective at preventing flu, that is still very meaningful and crucial for preventing hospitalizations and deaths. […] The general recommendation is to shoot for September or October to get your flu vaccine, said Dr. Kirley. You can start to get your vaccine, ideally before the end of October, but if you dont squeeze it in, go get it any time. […] Ideally before January is whats best. But well tell people all throughout flu season, if you havent gotten the vaccine yet, its still OK to get it and youre likely to benefit as long as influenza viruses are circulating, she said. […] There are a couple reasons why someone might not be able to get the flu vaccinethats relatively rare, said Dr. Kirley. A real allergy to it might be the most common reason, but generally speaking, if you are older than 6 months old, you should definitely get the flu vaccine.

• #2 Misconceptions about Seasonal Flu and Flu Vaccines | NYP

  https://www.nyp.org/pediatrics/tip-sheets/misconceptions-about-seasonal-flu-and-flu-vaccines

  No, a flu shot cannot cause flu illness. The influenza viruses contained in a flu shot are inactivated (killed), which means they cannot cause infection. […] The most common reaction to the flu shot in adults has been soreness, redness or swelling at the spot where the shot was given. This usually lasts less than two days. This initial soreness is most likely the result of the bodys early immune response reacting to a foreign substance entering the body. Other reactions following the flu shot are usually mild and can include a low grade fever and aches. If these reactions occur, they usually begin soon after the shot and last 1-2 days. The most common reactions people have to flu vaccine are considerably less severe than the symptoms caused by actual flu illness. […] People also may have mild reactions to the nasal spray vaccine. Some children and young adults 2-17 years of age have reported experiencing mild reactions after receiving nasal spray flu vaccine, including runny nose, nasal congestion or cough, chills, tiredness/weakness, sore throat and headache. Some adults 18-49 years of age have reported runny nose or nasal congestion, cough, chills, tiredness/weakness, sore throat and headache. These side effects are mild and short-lasting, especially when compared to symptoms of seasonal influenza infection.

• #2 Influenza | Health & Senior Services

  http://www.health.mo.gov/flu

  Symptoms can include fever, cough, sore throat, runny or stuff nose, muscle or body aches, headaches, chills and fatigue (tiredness). Some people may have vomiting and diarrhea. The flu can cause mild to severe illness, and at times can lead to hospitalization or death. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications. […] Your illness might be the flu if you have fever, cough, sore throat, runny or stuffy nose, body aches, headache, chills or fatigue (tiredness). Some people may have vomiting and diarrhea. People may be infected with the flu and have respiratory symptoms without a fever. […] If you develop flu-like symptoms and are concerned about your illness, especially if you are at high risk for complications of the flu, you should consult your health care provider. It is very difficult to distinguish the flu from other infections on the basis of symptoms alone. Most people with the flu have mild illness and do not need medical care. However, if you have symptoms of flu and are in a high risk group, or are very sick and worried about your illness, contact your health care provider. There are tests that can determine if you have the flu. There are also drugs your doctor may prescribe for treating the flu called antivirals.

• #2 Chicago Department of Public Health

  https://www.chicago.gov/city/en/depts/cdph/provdrs/infectious_disease/supp_info/influenza-home.html

  Flu is different from a cold and usually comes on suddenly. Know the symptoms: Fever or chills, Cough, Sore throat, Runny or stuffy nose, Muscle or body aches, Headaches, Tiredness, Vomiting and diarrhea (more common in children) […] There are many reasons to get a flu vaccine each year. It keeps you from getting sick with flu and reduces the risk of hospitalizations. Flu vaccine can be lifesaving for children. […] In addition to helping to protect pregnant women, a flu vaccine given during pregnancy helps protect the baby from flu for several months after birth. […] Flu vaccination is also an important preventive tool for people with chronic health conditions. […] Getting vaccinated yourself also protects people around you, especially those who are more vulnerable like babies and people with weakened immune system who cannot get the vaccine.

• #2 Flu Shot Side Effects and Risks: What Are the Facts?

  https://www.everydayhealth.com/flu/the-facts-on-flu-vaccine-risks/

  Many people worry that a flu shot can give them the flu, but thats not possible because the vaccine does not contain live virus. […] A common reason people dont get the flu shot is worry that the vaccine might give them the flu, says Jennifer Horney, PhD, the director of the epidemiology program at the University of Delaware in Newark. […] The CDC lists the following common side effects that people may experience from getting a flu shot: Soreness, redness, or swelling where the shot was given, Headache, Fever, Nausea, Muscle aches, Fatigue. […] Generally flu shot side effects last a few days at most and are typically mild. […] You can have a sore arm, feel a little achy for a day or two, and maybe have a low-grade fever as your immune system gets turned on, says James Conway, MD, a pediatric infectious disease specialist at the University of Wisconsin-Madison School of Medicine and Public Health.

• #2 Here’s How Long Flu Shot Side Effects Last, If You Experience Them at All | SELF

  https://www.self.com/story/how-long-do-flu-shot-side-effects-last

  There are some cases where you might experience shoulder pain after your shot. This can last for a couple days to about a week, or longer in rare instances. […] However, there does seem to be one exceptionpeople ages 65 and older, Dr. Abazia says, depending on what vaccine they are given. […] For example, the Fluzone High-Dose vaccine, specifically, contains four times more antigen (dead bits of influenza virus that spur your body to make antibodies) than the standard doseswhich means they can cause more side effects, like fever, muscle pain, and headache. […] Theres really no way to prevent influenza vaccine side effects, but you can take some steps to reduce how hard some of them hit you. […] Again, any discomfort post-vaccine should be pretty short-lived. But if youre not feeling great, there are a few things you can do to try to speed up your recovery time:

• #2 How to Relieve Flu Shot Side Effects Quickly and Easily

  https://www.myvaccinelawyer.com/vaccine-injury-lawyer/resources/vaccine/flu/side-effects/relieve/

  Some severe side effects from the flu shot include: Difficulty breathing, Hives or swelling of the face or throat, Chest pain, Shoulder Injuries („SIRVA”), Guillain-Barre Syndrome („GBS”), Chronic Inflammatory Demyelinating Polyneuropathy („CIDP”), Anaphylaxis (severe allergic reaction), Parsonage-Turner Syndrome („PTS”). […] Most of these are mild and temporary. […] For local reactions such as soreness, redness, or swelling at the injection site, applying warm and cold compresses offers significant relief and helps reduce pain.

• #2 Influenza | Health & Senior Services

  http://www.health.mo.gov/flu

  If you get the flu, get plenty of rest, drink a lot of liquids, and avoid using alcohol and tobacco. Also, you can take medications such as Tylenol to relieve the fever and muscle aches associated with the flu. Never give aspirin to children or teenagers who have flu-like symptoms, particularly fever. Stay home for at least 24 hours after your fever is gone without the use of a fever-reducing medicine, except to get medical care or other necessities.

• #2 How to treat flu shot side effects | UPMC MyHealth Matters

  https://www.upmcmyhealthmatters.com/how-to-treat-flu-shot-side-effects/

  While the flu shot has protective benefits, some people can experience side effects. Fortunately, the effects are usually mild and go away in a few days. […] Getting a flu shot helps to protect you and others from sickness and flu-related deaths. It prevents most people from catching the flu, but some people still get sick. People who get a flu shot and still catch the flu usually experience milder symptoms. […] The CDC lists these common side effects of the flu shot: Arm pain, soreness, redness, and/or swelling from the shot, Headache, Fever, Nausea, Muscle aches. […] If you develop more serious complications, such as a high fever, wheezing, hives, or weakness.

• #2 Flu Shot Side Effects: How to Manage Flu-Like Symptoms

  https://www.pasadenauc.com/blog/flu-shot-side-effects/

  Some people have cold symptoms after a flu shot, such as nasal congestion or a moderate cough. […] The majority of flu shot side effects are modest and usually disappear on their own within a few days. However, if symptoms develop, such as a rising temperature, severe muscular pain, or persistent exhaustion, or if they continue for more than 48 hours, it is best to see a doctor. […] Some people experience a delayed response, feeling flu shot sick the next day after receiving the vaccination. This is most likely due to the immune system stepping up its defenses. Although it may be inconvenient, this reaction is natural and transient. […] Yes, moderate flu-like symptoms are a frequent side effect that signals how your immune system is reacting to the vaccine. […] Symptoms often persist no more than 1-2 days. If the symptoms persist, consult your doctor.

• #2

  https://www.prevention.com/health/a62724657/flu-shot-2024-side-effects/

  Yes, you can have an allergic reaction to the flu shot. Its relatively rare, though, Dr. Russo says. […] But Dr. Russo also points out that having flu shot side effects isnt the same as having an allergic reaction. Allergic reactions would be getting hives elsewhere, wheezing, shortness of breath, or a more severe reaction like anaphylaxis, Dr. Russo says. […] Again, most people who have flu shot side effects only have a sore arm, if that. But some people will have things like muscle aches, headache, or flu-like symptoms. If you fall into this camp, Dr. Russo says that youre fine to take an OTC pain reliever, like Tylenol or ibuprofen. […] If you have constant pain, swelling, a severe rash, or symptoms of an allergic reaction, Dr. Russo says you should seek medical care.

• #2 High-dose flu vaccines: How are they different from other flu vaccines?

  https://www.mayoclinic.org/diseases-conditions/flu/expert-answers/fluzone/faq-20058032

  High-dose and adjuvanted flu vaccines can help people have a stronger immune response against influenza. […] Among people age 65 and older, high-dose and adjuvanted flu vaccines help prevent flu-related hospital stays better than the standard flu vaccines do. That’s based on research from past flu seasons. […] Compared with the standard flu vaccine, people who get the high-dose vaccine are more likely to have side effects. These include: Headache. Soreness, pain or a change in skin color at the site of the shot. Muscle aches. Feeling very tired. […] Side effects after the high-dose vaccine most often happened during the week after getting the vaccine.

• #2 8 things doctors wish patients knew about flu vaccines | American Medical Association

  https://www.ama-assn.org/delivering-care/public-health/8-things-doctors-wish-patients-knew-about-flu-vaccines

  Older adults are a higher-risk population. They have slightly different vaccine options that are designed to protect them a little bit more, she said. Because they are also clearly one of those high-risk populations for COVID, it is even more important for them to protect themselves against the flu as well. […] Even if we do develop the flu, we’re less likely to need to be hospitalized and it tends to be less severe if you get the vaccine, said Dr. Kirley. It is also about protecting othersyour family, friends, community members. […] The flu vaccine is most effective for all of us when more of us get it, so we can get closer to achievingat least for flu seasonthat herd immunity, she said. Getting the flu shot is not just doing something for yourself, but it definitely is a way you can contribute to good health in your community.

• #2 2024-2025 Influenza Vaccine Fact Sheet – City of Toronto

  https://www.toronto.ca/community-people/health-wellness-care/health-programs-advice/immunization/flu-influenza-vaccines/

  Influenza virus (the flu) is a virus that spreads easily. It infects the nose, throat and lungs. There are many strains that can cause illness. The symptoms are sudden onset of fever, sore throat, runny nose, cough, headaches, chills, muscle aches, feeling tired, and loss of appetite. In children, nausea, vomiting and diarrhea can occur. […] Common side effects include pain, redness and swelling at the injection site, headache, fever, muscle aches, joint pain or feeling tired. Side effects in children include irritability, drowsiness, or loss of appetite.

• #2 Frequently Asked Questions about Flu Vaccines | Baltimore City Health Department

  https://health.baltimorecity.gov/flu/frequently-asked-questions-about-flu-vaccines

  The flu vaccine is safe for most people and is recommended for everyone ages 6 months and older. […] While a flu vaccine cannot give you flu illness, there are different side effects that may be associated with getting a flu shot or a nasal spray flu vaccine. These side effects are mild and short-lasting, especially when compared to symptoms of a bad case of flu. […] Some minor side effects that may occur are: soreness, redness, and/or swelling where the shot was given, headache (low grade), fever, muscle aches, nausea, fatigue. […] In children, side effects from the nasal spray may include: runny nose, wheezing, headache, vomiting, muscle aches, fever (low grade). […] If these problems occur, they begin soon after vaccination and usually are mild and short-lived. […] Some people who get vaccinated may still get sick. However, flu vaccination has been shown in some studies to reduce the severity of illness in people who get vaccinated but still get sick.

• #2 The flu jab in pregnancy – NHS

  https://www.nhs.uk/pregnancy/keeping-well/flu-jab/

  A flu jab will help protect both you and your baby. […] Pregnancy changes how the body responds to infections such as flu. There is good evidence that pregnant women have a higher chance of developing complications if they get flu, particularly in the later stages of pregnancy. […] Young babies also have a higher risk of getting seriously ill if they get flu. Having flu increases the chances of pregnant women and their babies needing intensive care. […] One of the most common complications of flu is bronchitis, a chest infection that can become serious and develop into pneumonia. […] If you have flu while you’re pregnant, it could cause your baby to be born prematurely or have a low birthweight, and may even lead to stillbirth or death. […] Some people get a slightly raised temperature and aching muscles for a couple of days afterwards, and you may feel sore at the injection site. […] If you do have flu, there’s a prescribed medicine you can take that might help, or reduce your risk of complications, but it needs to be taken very soon after symptoms appear.

• #2 Flu Season This Year: What You Need To Know About Flu Vaccines, Symptoms & When To See A Doctor | University Hospitals

  https://www.uhhospitals.org/services/flu-treatment-services

  Flu vaccines are available now. […] The flu usually develops suddenly and can often be mistaken for a common cold. The most common flu symptoms are: High fever, Cough, Muscle or body aches, Headache, Tiredness or weakness, Stuffy or runny nose. […] Even if you get a strain of the flu not covered by the vaccine, you will experience milder symptoms and recover faster if you get a flu shot this season. […] Flu vaccination is especially important for people age 65 years and older because they are at high risk of developing serious complications from flu. […] The flu vaccine offers the best defense against flu and its potentially serious consequences and can reduce the spread of flu to others.

• #3 Flu Shot Side Effects: How to Manage Flu-Like Symptoms

  https://www.pasadenauc.com/blog/flu-shot-side-effects/

  The flu vaccination does not contain a live virus that could trigger the flu. Instead, it stimulates your immune system by introducing dormant or weakened viral particles. When you feel sick after getting a shot, it typically means your immune system is reacting. […] Typical symptoms might include: A low-grade fever, Fatigue, Muscles ache, Mild cough or congestion. […] These symptoms may make individuals believe that the flu shot is making them sick, but it is vital to remember that this is not the flu. Instead, your body is preparing to fight off the true virus if it encounters it later. […] Mild Flu-Like Symptoms: Feeling sick after a flu shot might include a slight fever, chills, or exhaustion. These symptoms are transient and indicate that your immune system is functioning properly.

• #3 Flu shots 101: How they work, potential side effects and more | University Health Center | Nebraska

  https://health.unl.edu/flu-shots-101-how-they-work-potential-side-effects-and-more/

  Flu vaccine Symptoms, progression […] The most common flu symptoms include: […] Fever […] Body aches […] Fatigue […] Upper respiratory symptoms that may include a cough, congestion or sore throat […] A person is considered contagious when symptoms are present. Still, they can potentially spread the flu even before they notice symptoms. […] You cannot get the flu from the flu shot, but you may experience mild side effects. Its common to feel tenderness at the injection site or mild symptoms for a day or two afterward. […] When you experience mild symptoms, remember that your immune system is doing what it is designed to do: reacting to a foreign antigen and triggering the production of antibodies that will fight the flu in the future. […] Common side effects include: […] General fatigue […] Injection site pain […] Occasionally, a low-grade fever

• #3 Influenza (flu) vaccine | Australian Government Department of Health and Aged Care

  https://www.health.gov.au/topics/immunisation/vaccines/influenza-flu-vaccine

  Influenza vaccination is a safe and effective way to protect yourself and your family from serious disease caused by influenza. […] You may experience minor side effects following vaccination. Most reactions are mild and only last a couple of days and you will recover without any problems. […] Common side effects of influenza vaccines include: drowsiness or tiredness, muscle aches, pain, redness and swelling at injection site, occasionally an injection-site lump (may last many weeks – no treatment needed), mild fever. […] Talk to your health professional about possible side effects of the influenza vaccines, or if you or your child have side effects that worry you.

• #3 Your Child’s Vaccines: Influenza (Flu) Vaccine (for Parents) | Nemours KidsHealth

  https://kidshealth.org/en/parents/flu-vaccine.html

  The flu vaccine protects against influenza (what most of us call „the flu”), a contagious viral infection of the nose, throat, and lungs that can make a person feel very sick. […] While the flu vaccine isn’t 100% effective, it still greatly lowers a person’s chances of catching the flu, which can be very serious. It also can make symptoms less severe if someone who got the vaccine does still get the flu. […] Both types of vaccine can cause mild side effects. […] The flu shot usually is given as an injection in the upper arm or thigh (depending on a person’s age). It contains killed flu virus and can’t cause someone to get the flu. But it can cause soreness, redness, or swelling at the injection site. Rarely, it might cause a low fever or body aches. […] The nasal spray flu vaccine contains weakened live flu viruses. So it may cause mild cold-like symptoms, such as a runny nose, sore throat, or tiredness. Like the shot, it can sometimes cause a low fever or body aches. But the weakened virus isn’t strong enough to grow in the lungs, so it will not cause serious illness. […] Very rarely, the flu vaccine can cause a serious allergic reaction.

• #3 8 things doctors wish patients knew about flu vaccines | American Medical Association

  https://www.ama-assn.org/delivering-care/public-health/8-things-doctors-wish-patients-knew-about-flu-vaccines

  It typically falls somewhere between 40% and 60% effectiveness, she said. Even when the vaccine is only 30% effective at preventing flu, that is still very meaningful and crucial for preventing hospitalizations and deaths. […] The general recommendation is to shoot for September or October to get your flu vaccine, said Dr. Kirley. You can start to get your vaccine, ideally before the end of October, but if you dont squeeze it in, go get it any time. […] Ideally before January is whats best. But well tell people all throughout flu season, if you havent gotten the vaccine yet, its still OK to get it and youre likely to benefit as long as influenza viruses are circulating, she said. […] There are a couple reasons why someone might not be able to get the flu vaccinethats relatively rare, said Dr. Kirley. A real allergy to it might be the most common reason, but generally speaking, if you are older than 6 months old, you should definitely get the flu vaccine.

• #3 Influenza vaccine – common questions | Healthify

  https://healthify.nz/medicines-a-z/i/influenza-vaccine-common-questions

  Getting the flu vaccination is the best way to protect yourself and others from getting the flu. […] Even if you catch the flu after having the vaccination, your symptoms are likely to be milder, you are likely to have fewer sick days and you’re less likely to pass it onto others. […] Getting a vaccine may not stop you getting flu, but it means you’re less likely to get very sick. It takes up to 2 weeks after your flu vaccination for your body’s immune system to protect you against flu. […] The vaccine can’t cause the flu because it doesn’t contain any live virus. The vaccine stimulates an immune response which can include flu-like symptoms (eg, fever, headache and tiredness). This creates immunity but doesn’t cause the illness. Most people tolerate the vaccine well. […] Any after-effects from the vaccine are usually mild and last 1 to 2 days. They may include: soreness, aching and/or redness at the injection site, tiredness, feeling a little unwell or having a mild fever. […] These are signs that your immune system is working. Contact your healthcare provider if you have a more severe reaction to the flu vaccination or if you’re worried.

• #3 Frequently Asked Questions about Flu Vaccines | Baltimore City Health Department

  https://health.baltimorecity.gov/flu/frequently-asked-questions-about-flu-vaccines

  The flu vaccine is safe for most people and is recommended for everyone ages 6 months and older. […] While a flu vaccine cannot give you flu illness, there are different side effects that may be associated with getting a flu shot or a nasal spray flu vaccine. These side effects are mild and short-lasting, especially when compared to symptoms of a bad case of flu. […] Some minor side effects that may occur are: soreness, redness, and/or swelling where the shot was given, headache (low grade), fever, muscle aches, nausea, fatigue. […] In children, side effects from the nasal spray may include: runny nose, wheezing, headache, vomiting, muscle aches, fever (low grade). […] If these problems occur, they begin soon after vaccination and usually are mild and short-lived. […] Some people who get vaccinated may still get sick. However, flu vaccination has been shown in some studies to reduce the severity of illness in people who get vaccinated but still get sick.

• #3 The flu jab in pregnancy – NHS

  https://www.nhs.uk/pregnancy/keeping-well/flu-jab/

  A flu jab will help protect both you and your baby. […] Pregnancy changes how the body responds to infections such as flu. There is good evidence that pregnant women have a higher chance of developing complications if they get flu, particularly in the later stages of pregnancy. […] Young babies also have a higher risk of getting seriously ill if they get flu. Having flu increases the chances of pregnant women and their babies needing intensive care. […] One of the most common complications of flu is bronchitis, a chest infection that can become serious and develop into pneumonia. […] If you have flu while you’re pregnant, it could cause your baby to be born prematurely or have a low birthweight, and may even lead to stillbirth or death. […] Some people get a slightly raised temperature and aching muscles for a couple of days afterwards, and you may feel sore at the injection site. […] If you do have flu, there’s a prescribed medicine you can take that might help, or reduce your risk of complications, but it needs to be taken very soon after symptoms appear.

• #3 Influenza (flu) – immunisation | Better Health Channel

  https://www.betterhealth.vic.gov.au/health/healthyliving/flu-influenza-immunisation

  Possible side effects of the flu vaccine include drowsiness or tiredness, muscle aches, localized pain, redness and swelling at the injection site, occasionally, an injection-site lump (nodule) that may last many weeks but needs no treatment, and low-grade temperature (fever). […] Common side effects following immunisation are usually mild and temporary (occurring in the first 2 days after vaccination). […] If the side effects following immunisation are unexpected, persistent, or severe, or if you are worried about yourself or your child’s condition after a vaccination, see your doctor or immunisation nurse as soon as possible or go directly to a hospital. […] There is a very small risk of a serious allergic reaction (anaphylaxis) to any vaccine. […] Apart from anaphylaxis, other extremely rare side effects include febrile convulsions in children. […] A small increase in Guillain-Barr syndrome was seen in the US in 1976, but since that time, surveillance has shown that it is limited to one case for every million doses of the flu vaccine, if at all.

• #3 Vaccine Injury and Death | Pain After Flu Shot

  https://vaccinelaw.com/vaccine-side-effects/flu-vaccine-attorney/

  Flu vaccines are comprised of different strains each year. […] Generally Accepted Side Effects Resulting from the Flu Shot: You cannot get the flu from receiving a flu shot. However, there are some medically accepted side effects of the flu shot. These include serious disease processes such as Guillain Barre Syndrome, or GBS. Other recognized side effects include permanent shoulder injuries related to the administration of the vaccine. Less serious symptoms such as runny nose, wheezing, headaches, vomiting, muscle aches, cough, sore throat, and fever have all been reported after flu vaccines. […] Guillain-Barre Syndrome (GBS) is a rare autoimmune disorder that has been linked to the annual flu shot. A GBS diagnosis can also lead to significant financial and non-financial costs, and it can also justify filing a flu shot lawsuit under the VICP. Early symptoms of GBS include pain, tingling and weakness throughout the body, while vaccine recipients may experience difficulty breathing, loss of bowel and bladder control, sudden changes in heart rate and blood pressure, and other serious effects as the disease progresses.

• #3 8 things doctors wish patients knew about flu vaccines | American Medical Association

  https://www.ama-assn.org/delivering-care/public-health/8-things-doctors-wish-patients-knew-about-flu-vaccines

  Older adults are a higher-risk population. They have slightly different vaccine options that are designed to protect them a little bit more, she said. Because they are also clearly one of those high-risk populations for COVID, it is even more important for them to protect themselves against the flu as well. […] Even if we do develop the flu, we’re less likely to need to be hospitalized and it tends to be less severe if you get the vaccine, said Dr. Kirley. It is also about protecting othersyour family, friends, community members. […] The flu vaccine is most effective for all of us when more of us get it, so we can get closer to achievingat least for flu seasonthat herd immunity, she said. Getting the flu shot is not just doing something for yourself, but it definitely is a way you can contribute to good health in your community.

• #3 Flu Shots, Prevention, Symptoms and Care | Froedtert & MCW

  https://www.froedtert.com/flu

  Flu symptoms typically come on suddenly and include some or all of the following: Fever or chills, Cough, Sore throat, Runny or stuffy nose, Muscle or body aches, Fatigue, Vomiting, diarrhea (more common in children than adults). […] The flu, like the common cold, is a virus. It starts suddenly and usually develops with a bad sore throat, body aches, high fever (above 101 degrees Fahrenheit) and, at times, a runny nose. […] Symptoms usually appear one to four days after exposure to the flu virus and typically last about five days. Symptoms will usually go away within one to two weeks.

• #3 Influenza (Flu) | UT Health RGV | UT Health RGV

  https://www.uthealthrgv.org/flu/index.htm

  Symptoms of the flu can include a fever, cough, sore throat, runny or stuffy nose, headaches, and muscle aches. The flu can cause mild to severe illness. […] Flu signs and symptoms usually come on suddenly. People who are sick with flu often feel some or all these symptoms: Fever or feeling feverish, Cough, Chills, Sore throat, Runny or stuffy nose, Muscle or body aches, Headaches, Fatigue or feeling tired, Some may experience vomiting and diarrhea, though this is more common in children than adults. […] Antiviral drugs work best when started early, such as one to two days after your flu symptoms begin. Influenza antiviral drugs can lessen symptoms and shorten the time you are sick by 1 or 2 days.

• #3 Flu Season 2024-2025: What You Need to Know

  https://www.bcbsm.mibluedaily.com/stories/flu-season/how-long-does-the-flu-shot-last

  Flu symptoms usually come on suddenly whereas common cold symptoms build slowly. Flu symptoms can be like COVID-19 symptoms, so if you’re feeling sick you might want to consider a COVID test. Here are some common flu symptoms: Cough, Fatigue (tiredness), Fever or feeling feverish/chills, though not everyone will have a fever, Headaches, Muscle or body aches, Runny or stuffy nose, Sore throat, Some people may have vomiting and diarrhea, though this is more common in children than adults. […] Any side effects from a flu shot would likely occur quickly and last a day or two. Common side effects include fatigue, low-grade headache, fever, nausea and muscle aches. Soreness, redness or swelling where the shot was given is also common. […] Experts say the flu shot offers protection for about six months. For individuals aged 65 and older, the flu shot may not offer as long of protection. […] Generally speaking, flu shots are quite effective. Getting the shot is the best way to prevent a potentially deadly disease. Vaccines have been proven to lower the risk of severe illness and death resulting from the flu.

• #3 Influenza (Flu) Vaccine: Care Instructions | Kaiser Permanente

  https://healthy.kaiserpermanente.org/health-wellness/health-encyclopedia/he.influenza-flu-vaccine-care-instructions.uf9097

  Influenza (flu) is an infection in the lungs and breathing passages. It is caused by the influenza virus. The flu comes on quickly. It can cause a cough, stuffy nose, fever, chills, tiredness, and aches and pains. These symptoms may last for a few weeks. […] You may have a slight fever or muscle aches or pains after getting a flu vaccine. […] Call your doctor now or seek immediate medical care if after getting the flu vaccine: You think you are having a reaction to the flu vaccine, such as a new fever.

• #3 Should I Get a Flu Shot With COVID-19?

  https://www.unitypoint.org/news-and-articles/should-i-get-a-flu-shot-during-covid-19

  Getting a flu shot also helps conserve health care resources during sick season. […] A severe allergic reaction (anaphylaxis) would start just a few minutes after a vaccine. It would include symptoms such as trouble breathing, pale or blue skin, itching, hives, lightheadedness, confusion, losing consciousness, anxiety or vomiting, Dr. Rinderknecht says. […] COVID-19 symptoms include: Fever or chills, Cough, Shortness of breath, Muscle or body aches, Fatigue, Sore throat, Loss of taste/smell, Headache, Congestion or runny nose, Nausea or vomiting, Diarrhea. […] Flu shot side effects include soreness, redness and swelling at the location of the shot. Some people may also experience mild headache, fever, nausea, muscle aches and fatigue, but those occur in less than 1% of those who get vaccinated. Dr. Rinderknecht says, overall, flu shot symptoms are generally mild and last for just a day or two.

• #3 What Symptoms to Expect From the Flu Shot (And How to Treat Them)

  https://www.seniorhelpers.com/tn/knoxville/resources/blogs/what-symptoms-to-expect-from-the-flu-shot-and-how-to-treat-them/

  Seniors aged 65 and above are more susceptible to Influenza, which may later cause complications. […] Although the flu shot is generally not associated with major or lethal side effects, seniors may experience some mild symptoms. However, they should not discourage anyone from getting the shot since they can be avoided and treated easily. […] Some of the common mild side effects of the flu vaccine include: Soreness, redness, or swelling at the injection site: This should go away within a few days. Muscle aches, headaches, and fatigue: Seniors may also experience some of these symptoms after the flu jab; however, they should not last more than two days. Chest and abdominal pain: It is an immune reaction to the vaccine, known as a „vaccine reaction.” The reaction can be mild or severe, depending on the senior’s immune system. Nausea: This can result from either the body’s reaction to the vaccine or the preservatives used to extend the vaccine’s shelf life.

• #3 Flu (influenza) vaccine

  https://www.rch.org.au/kidsinfo/fact_sheets/Influenza_(flu)_vaccine/

  The most common side effects of the flu vaccine are pain and redness at the injection site. […] Two common side effects of the flu vaccine are pain and redness at the injection site. Less commonly, children may get a fever or aches and pains lasting one or two days. […] The flu vaccine cannot give your child the flu. […] The flu vaccine may have other side effects. If you are concerned or notice anything unusual after your childs vaccine, speak to your childs doctor.

• #4 Influenza vaccines – frequently asked questions (FAQs) | NCIRS

  https://ncirs.org.au/influenza/influenza-vaccines-frequently-asked-questions-faqs

  Influenza is caused by infection with the influenza virus and results in respiratory illness. […] Common symptoms include: fever, dry cough, nasal congestion, headache, sore throat, general symptoms such as feeling unwell, muscle aches, and pains and fatigue. […] The immune response of the body after vaccination may result in side effects that are similar to early influenza symptoms however, these generally only last for 1-2 days and are much milder than the symptoms of actual influenza. […] Between 1% and 10% of people who have an influenza vaccine experience a fever, headache, general tiredness or muscle aches. These symptoms can last for 1-2 days. […] In rare circumstances, infants and children who receive an influenza vaccine may experience a type of seizure known as a febrile convulsion.

• #4 Vaccine-associated reduction in symptom severity among patients with influenza A/H3N2 disease

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4684491/

  Among patients with A/H3N2 infection, receipt of seasonal influenza vaccine was associated with reduced symptom severity. […] In multivariate analysis, vaccinated individuals were significantly less likely to report a fever 101 F (OR 0.24; 95%CI [0.10, 0.62]) and more likely to report myalgias (OR 3.31; 95% CI [1.22, 8.97]) than vaccinated individuals. […] Among patients with A/H3N2 infection, upper respiratory and total symptom severity scores were significantly lower for vaccinated patients during the first two days of illness, and differences in total symptom severity persisted over seven days (p0.05 for all comparisons). […] Differences in symptom severity were not observed between vaccinated and unvaccinated participants with A/H1N1 infection. […] Our findings suggest that influenza vaccine, while moderately effective in preventing disease outright, mitigates the perceived severity and duration of symptoms, while potentially providing benefit in lessening the likelihood of severe disease and/or complications due to influenza.

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