Alergia na pleśń
Epidemiologia
Alergia na pleśń stanowi istotny problem zdrowotny, z częstością występowania w populacji ogólnej szacowaną na 3-10%, a w grupach predysponowanych nawet do 20-30%. Najczęściej uczulającymi gatunkami są Alternaria alternata, Aspergillus fumigatus, Cladosporium herbarum oraz Penicillium notatum. Epidemiologia alergii na pleśń wykazuje znaczne zróżnicowanie geograficzne – np. uczulenie na Alternaria alternata występuje u 13% populacji w USA (wiek 6-74 lata), 20% w Hiszpanii, a w Europie średnio 9%, z wahaniami od 2% w Finlandii do 23,8% w Grecji. Ekspozycja na pleśń, zwłaszcza w warunkach wilgotnych i w określonych zawodach (rolnicy, piekarze, pracownicy szklarni), jest silnie powiązana z rozwojem astmy i alergicznego nieżytu nosa, szczególnie u dzieci i osób z atopią. Zarodniki pleśni, ze względu na swój mały rozmiar, łatwo penetrują dolne drogi oddechowe, nasilając objawy astmy i mogą wchodzić w interakcje z innymi alergenami i zanieczyszczeniami powietrza.
- Epidemiologia alergii na pleśń
- Ekspozycja na pleśń i jej wpływ na zdrowie
- Drogi ekspozycji
- Wpływ na zdrowie osób z alergią
- Związek między ekspozycją na pleśń a alergicznym nieżytem nosa
- Nadzór i monitorowanie alergii na pleśń
- Metody monitorowania
- Znaczenie monitorowania pleśni w pomieszczeniach
- Dochodzenia epidemiologiczne w przypadku podejrzenia ognisk pleśni
- Badania epidemiologiczne i kontrolne
- Wnioski i rekomendacje
Epidemiologia alergii na pleśń
Alergia na pleśń stanowi istotny problem zdrowotny dotykający znaczący odsetek populacji ogólnej. Według szacunków Światowej Organizacji Alergii (WAO), częstość występowania chorób alergicznych na świecie waha się od 10% do 40%, w zależności od kraju. W większości krajów rozwiniętych alergia dotyka ponad 20% populacji 1. Jednakże, w przypadku alergii na pleśń, dane epidemiologiczne są bardziej zróżnicowane.
Szacuje się, że częstość występowania alergii na pleśń wynosi około 3-10% populacji ogólnej 23. Wśród osób predysponowanych do alergii, odsetek ten wzrasta do około 20-30% 4. Alergia na pleśń jest częściej diagnozowana u mężczyzn, nastolatków oraz osób z atopowym zapaleniem skóry i astmą 5.
Badania epidemiologiczne wykazują znaczne zróżnicowanie geograficzne w występowaniu alergii na pleśń. W Stanach Zjednoczonych częstość występowania uczulenia na Alternaria alternata w populacji ogólnej (w wieku 6-74 lat) wynosi około 13% 6. Natomiast w Hiszpanii odsetek ten szacuje się na około 20% 7. Badania przeprowadzone przez sieć Global Asthma and Allergy European Network (GA2LEN) w 14 krajach Wspólnoty Europejskiej wykazały, że średnia częstość występowania uczulenia na A. alternata wynosi 9%, przy czym wartości te wahają się od 2% w Finlandii do 23,8% w Grecji 8.
Czynniki ryzyka alergii na pleśń
Badania wskazują, że wrażliwość na pleśń jest wyższa w obszarach miejskich oraz na terenach łąk i prerii, które charakteryzują się suchszym klimatem i niższymi opadami rocznymi (np. Kolorado, Oklahoma, Kansas, Nowy Meksyk) 9. Osoby z określonymi zawodami są bardziej narażone na rozwój alergii na pleśń ze względu na zwiększoną ekspozycję. Do grup zwiększonego ryzyka należą:
- Rolnicy
- Pracownicy mleczarni
- Drwale
- Piekarze
- Pracownicy młynów
- Stolarze
- Pracownicy szklarni
- Producenci wina
- Osoby zajmujące się naprawą mebli 10
Istnieje również silny związek między ekspozycją na pleśń a objawami astmy oraz zależność między pogorszeniem objawów astmy a wilgotnością w domu, co może zwiększać ryzyko rozwoju pleśni 11.
Najczęstsze gatunki pleśni uczulających
Wśród alergizujących gatunków pleśni, najwyższą częstość występowania w chorobach alergicznych lub uczuleniach wykazują: Alternaria alternata, Aspergillus fumigatus, Cladosporium herbarum i Penicillium notatum 12. Inne pleśnie często wywołujące reakcje alergiczne to:
- Aureobasidium (Pullularia)
- Epicoccum
- Fusarium
- Helminthosporium
- Mucor
- Rhizopus 13
Choć na świecie występuje wiele rodzajów pleśni, tylko kilkadziesiąt z nich jest znanych z wywoływania reakcji alergicznych 14.
Ekspozycja na pleśń i jej wpływ na zdrowie
Ekspozycja na pleśń może prowadzić do różnych skutków zdrowotnych, od łagodnych objawów alergicznych po poważniejsze konsekwencje, szczególnie u osób z osłabionym układem odpornościowym.
Drogi ekspozycji
Główną drogą narażenia na pleśń jest wdychanie unoszących się w powietrzu zarodników pleśni 15. Ekspozycja na pleśń może wystąpić zarówno w pomieszczeniach, jak i na zewnątrz. Pleśnie zewnętrzne często powodują objawy alergiczne latem i jesienią, podczas gdy pleśnie wewnętrzne mogą powodować objawy alergiczne przez cały rok 16.
Występowanie zarodników grzybów w powietrzu ma charakter sezonowy. Szczytowe stężenie jest rejestrowane głównie latem, ze względu na dostępność składników odżywczych w glebie, sprzyjającą temperaturę i wilgotność, oraz wczesną jesienią, gdy po deszczowych dniach następują słoneczne, suche i wietrzne dni 17.
Wpływ na zdrowie osób z alergią
Zarodniki pleśni są szkodliwe dla osób z astmą. Mały rozmiar zarodników pleśni pozwala im łatwiej przedostawać się do dolnych dróg oddechowych, gdzie mogą wywołać atak astmy. Zarodniki pleśni mogą również wchodzić w interakcje z innymi alergenami zewnętrznymi i zanieczyszczeniami powietrza, co może zwiększać ryzyko astmy związane z tymi substancjami 18.
Badania wykazały, że ekspozycja na jakikolwiek wskaźnik pleśni lub wilgoci była związana z astmą do 16 roku życia (OR 1,31; 95% CI 1,08-1,59), podczas gdy ekspozycja na zapach pleśni (OR 1,29; 95% CI 1,03-1,62) i widoczna pleśń (OR 1,28; 95% CI 1,04-1,58) były związane z nieżytem nosa 19.
Co więcej, ekspozycja na jakikolwiek wskaźnik pleśni lub wilgoci była związana z przetrwałą astmą (OR 1,73; 95% CI 1,20-2,50), ale nie z astmą wczesno-przemijającą ani późno-rozpoczynającą się 20. Ekspozycja na pleśń lub wilgoć w okresie niemowlęcym zwiększała ryzyko astmy i nieżytu nosa do 16 roku życia, szczególnie w przypadku chorób niealergicznych 21.
Związek między ekspozycją na pleśń a alergicznym nieżytem nosa
Badania epidemiologiczne przeprowadzone w różnych klimatach sugerują, że wilgoć i pleśń w domu mogą również zwiększać ryzyko alergicznego nieżytu nosa u dzieci 22. Ekspozycja na widoczną pleśń w pomieszczeniach była znacząco związana ze zwiększonym ryzykiem wystąpienia obecnego nieżytu nosa i alergicznego nieżytu nosa, przy czym silniejsze związki występowały wśród pacjentów, którzy nigdy nie mieli astmy 23.
Wyniki badań wykazały, że ekspozycje w przeszłości (skorygowany OR = 1,51; 95% CI, 1,1-2,08) i obecne ekspozycje (aOR = 1,75; 95% CI, 1,18-2,6) na pleśń miały istotne związki z obecnym nieżytem nosa. Związki z alergicznym nieżytem nosa były statystycznie istotne zarówno dla ekspozycji w przeszłości (aOR = 1,8; 95% CI, 1,25-2,6), jak i dla ekspozycji obecnych (aOR = 2,01; 95% CI, 1,3-3,1) 24.
Nadzór i monitorowanie alergii na pleśń
Monitorowanie i nadzór nad alergią na pleśń są istotne dla zrozumienia jej wpływu na zdrowie publiczne oraz opracowania skutecznych strategii prewencyjnych.
Metody monitorowania
W celu monitorowania obecności zarodników pleśni w powietrzu stosuje się różne metody. Jedną z nich jest używanie pułapek na zarodniki, takich jak pułapka Burkarda, do zbierania próbek powietrza 25. Próbki te są następnie analizowane w certyfikowanych laboratoriach aerobiologicznych w celu identyfikacji i zliczenia zarodników pleśni.
Wykrywanie alergii na pleśń Epicoccum jest typowo przeprowadzane poprzez kombinację badania klinicznego, historii pacjenta i konkretnych testów alergicznych 26. Metody te pomagają w identyfikacji konkretnych alergenów pleśniowych i formułowaniu skutecznych środków zapobiegawczych oraz opcji leczenia dla osób dotkniętych tym schorzeniem.
Znaczenie monitorowania pleśni w pomieszczeniach
Ze względu na potencjalny wpływ ekspozycji na pleśń na zdrowie, prowadzone są badania mające na celu ustalenie progów ekspozycji związanych z negatywnymi skutkami zdrowotnymi. Badania wykazały, że dzieci mieszkające w domach z uszkodzeniami wilgociowymi wynoszącymi ≥0,29 m² były znacznie bardziej narażone na wystąpienie świszczącego oddechu w wieku 3 lat i przetrwałego świszczącego oddechu do wieku 7 lat (skorygowany iloraz szans [aOR] = 2,2; 95% przedział ufności [CI] = 1,0, 4,3 i aOR = 3,2; CI = 1,3, 7,5, odpowiednio) 27.
Dodatkowo, domy mające ≥0,19 m² uszkodzeń spowodowanych pleśnią były związane z świszczącym oddechem w wieku 3 lat i wczesnym przemijającym świszczącym oddechem ocenianym w wieku 7 lat (aOR = 2,9; CI = 1,3, 6,4 i aOR = 3,5; CI = 1,5, 8,2, odpowiednio) 28. Jednak te wyniki nie powinny być traktowane jako progi istotne dla zdrowia, ponieważ dane poniżej tych poziomów były zbyt skąpe, aby ocenić kształt relacji lub zbadać potencjalne progi istotne dla zdrowia 29.
Dochodzenia epidemiologiczne w przypadku podejrzenia ognisk pleśni
W przypadku podejrzenia ognisk pleśni w placówkach opieki zdrowotnej, szczególnie gdy dotyczy to inwazyjnych zakażeń pleśniowych, zalecane jest natychmiastowe powiadomienie lokalnego lub stanowego departamentu zdrowia 30. Nie należy czekać na potwierdzenie laboratoryjne, aby zgłosić skupisko lub ognisko, ponieważ potwierdzenie laboratoryjne niektórych pleśni trwa dłużej niż w przypadku wielu innych grzybów 31.
Określenie, czy skupisko zakażeń pleśniowych (tj. podejrzewane ognisko) stanowi prawdziwe ognisko, może być trudne z kilku powodów: diagnozowanie przypadku często wymaga wielu metod (np. hodowla, histopatologia, badania serologiczne, PCR), liczby przypadków są często małe, co utrudnia stwierdzenie, czy wskaźniki zakażeń są naprawdę powyżej wartości bazowej, a okres inkubacji dla większości zakażeń pleśniowych jest niejasny 32.
Badania epidemiologiczne i kontrolne
Badania przekrojowe
Badania przekrojowe są często stosowane do badania związku między ekspozycją na pleśń a chorobami alergicznymi. Na przykład, badanie przekrojowe z wykorzystaniem kwestionariusza zostało użyte do zbadania samodzielnie zgłaszanej częstości występowania objawów i chorób w problematycznym budynku oraz w pobliskim budynku należącym do powiatu, który wybrano jako porównanie 33. Po ustaleniu definicji przypadku choroby układu oddechowego, ryzyko problemów oddechowych z powodu narażenia na pleśń i uszkodzenia spowodowane wodą oszacowano na 3 do 4 razy wyższe niż tło. Oceny kliniczne potwierdziły diagnozę nowo powstałej alergicznej choroby układu oddechowego wśród mieszkańców budynku 34.
Inne badanie przekrojowe przeprowadzone w dwóch klimatycznie różnych miastach wykazało, że ekspozycja na pleśń w gospodarstwie domowym była znacząco związana ze zwiększonym ryzykiem astmy i alergii. Wskaźniki częstości występowania astmy, alergii na substancje, alergicznego nieżytu nosa i pleśni były wszystkie wyższe w Wuhan niż w Lanzhou 35.
Badania kohortowe
Badania kohortowe dostarczają cennych informacji na temat długoterminowych skutków ekspozycji na pleśń. Na przykład, badanie BAMSE wykazało, że ekspozycja na pleśń lub wilgoć w okresie niemowlęcym zwiększała ryzyko astmy i nieżytu nosa do 16 roku życia, szczególnie w przypadku chorób niealergicznych 36.
Inne badanie kohortowe wykazało, że ekspozycja na pleśń w okresie niemowlęcym była związana z wyższym ryzykiem rozwoju atopii, nie tylko w stosunku do pleśni, ale także do innych powszechnych, wdychanych alergenów 37. Efekty te były najsilniejsze w grupie dzieci, które mieszkały w tym samym domu od urodzenia 38.
Badania interwencyjne
Badania interwencyjne mają na celu ocenę skuteczności środków zapobiegawczych w redukcji ekspozycji na pleśń i związanych z nią objawów alergicznych. Chociaż konkretne badania interwencyjne nie zostały szczegółowo opisane w dostępnych źródłach, wiadomo, że jednym z najlepszych sposobów leczenia alergii na pleśń jest zapobieganie, obejmujące kontrolowanie poziomów wilgotności, poprawę wentylacji, natychmiastowe usuwanie przecieków, inteligentne czyszczenie i regularne inspekcje 39.
Po huraganie Katrina przeprowadzono badanie mające na celu ustalenie, czy mieszkańcy Nowego Orleanu byli narażeni na wyższe ryzyko alergicznego uczulenia na pleśń. Badanie wykazało jednak, że wskaźniki wrażliwości na pleśń nie różniły się między osobami narażonymi na pleśń a osobami nienarażonymi. Ponadto, ich wskaźniki wrażliwości na pleśń nie różniły się od wskaźników dla populacji USA ogółem 40.
Wnioski i rekomendacje
Na podstawie dostępnych danych epidemiologicznych i wyników badań można sformułować kilka wniosków i rekomendacji dotyczących alergii na pleśń.
Implikacje dla zdrowia publicznego
Ekspozycja na jakikolwiek wskaźnik pleśni lub wilgoci zwiększa przede wszystkim ryzyko niealergicznej astmy i nieżytu nosa, co może przemawiać za drażniącymi raczej niż alergicznymi zmianami zapalnymi w drogach oddechowych 41. Dlatego też, strategie zdrowia publicznego powinny być ukierunkowane nie tylko na osoby z alergią, ale także na szerszą populację, która może doświadczać drażniących skutków ekspozycji na pleśń.
Rosnąca częstość występowania chorób alergicznych dróg oddechowych sugeruje potrzebę rozszerzenia diagnostyki o nowe gatunki grzybów 42. Identyfikacja konkretnego typu pleśni jest ważna, ponieważ różne typy mogą wywoływać różnorodne szkodliwe odpowiedzi immunologiczne 43.
Zalecenia dotyczące profilaktyki
Skuteczne zarządzanie pleśnią wymaga proaktywnego podejścia, obejmującego kontrolowanie poziomów wilgotności, poprawę wentylacji, natychmiastowe usuwanie przecieków, inteligentne czyszczenie i regularne inspekcje 44. Jeśli objawy utrzymują się pomimo tych wysiłków, konieczna jest konsultacja ze specjalistą.
Jednym z najlepszych sposobów leczenia alergii na pleśń jest zapobieganie. Należy ograniczyć ekspozycję na pleśń i unikać wszystkiego, co, jak wiadomo, wywołuje objawy. Jeśli unikanie nie jest możliwe, należy omówić opcje leczenia z lekarzem lub alergologiem 45.
Przyszłe kierunki badań
Potrzebne są badania, które wyjaśnią zależności między dawką a odpowiedzią i określą, czy istnieje możliwy próg, który może być łatwo stosowany w terenie i dostarczać pomocnych informacji społeczeństwu 46. Badania te powinny uwzględniać nie tylko ilościowe miary ekspozycji na pleśń, ale także jakościowe aspekty, takie jak rodzaj pleśni i jej potencjał alergenny.
Ponadto, badania nad wpływem zmian klimatycznych na występowanie alergii na pleśń są kluczowe dla zrozumienia przyszłych trendów epidemiologicznych. Zwiększająca się częstość występowania chorób alergicznych jest przypisywana częściowo zmianom klimatycznym powodującym dłuższe sezony pylenia i wyższe liczby pyłków 47. Podobny wpływ może dotyczyć zarodników pleśni, co wymaga dalszych badań.
| Gatunek pleśni | Częstość występowania uczulenia | Populacja | Region |
|---|---|---|---|
| Alternaria alternata | 13% | Populacja ogólna (6-74 lat) | Stany Zjednoczone |
| Alternaria alternata | 20% | Populacja ogólna | Hiszpania |
| Alternaria alternata | 9% (średnia) | Populacja ogólna | Europa (14 krajów) |
| Alternaria alternata | 2% | Populacja ogólna | Finlandia |
| Alternaria alternata | 23,8% | Populacja ogólna | Grecja |
| Wszystkie gatunki pleśni | 3-10% | Populacja ogólna | Dane globalne |
| Wszystkie gatunki pleśni | 20-30% | Osoby predysponowane do alergii | Dane globalne |
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Materiały źródłowe
- #1 Fungal AeroallergensâThe Impact of Climate Changehttps://www.mdpi.com/2309-608X/9/5/544
The incidence of allergic diseases in the world is rapidly increasing, and according to the estimates of the World Allergy Organization (WAO), it ranges from 10â40%, depending on the country. In most developed countries, allergy affects over 20% of the population. […] The prevalence of respiratory allergy to fungi is not fully known. Still, it is estimated to affect about 20â30% of sensitive subjects (predisposed to allergies), or up to 6% of the general population. […] The occurrence of fungal spores in the air is seasonal. Their peak concentration is recorded mainly in summer due to the availability of nutrients in the soil, favorable temperature, and humidity and in early autumn when rainy days are followed by sunny, dry, and windy days. […] Allergy to fungi manifests itself as immediate type I hypersensitivity mediated by immunoglobulin E, and as type II, III, and IV reactions. […] The vast spectrum of clinical symptoms caused by fungal allergens includes rhinitis, conjunctivitis, urticaria, or atopic dermatitis. […] The increasing incidence of allergic respiratory diseases suggests the need for extension of diagnostics to include new species of fungi.
- #2 Mold Allergy – Allergy & Asthma Networkhttps://allergyasthmanetwork.org/allergies/mold-allergy/
For many people, exposure to mold causes no issues. But some people have allergic reactions to mold. The National Institutes of Health estimates that about 3-10% of people have a mold allergy. […] Mold spores are harmful to people with asthma. The small size of mold spores allows them to pass more easily into the lower airways, where they can trigger an asthma attack. Mold spores may also interact with other outdoor allergens and air pollution. This can increase the asthma risk from those substances. […] Yes, you can have an indoor mold allergy and outdoor mold allergy. If you are allergic to mold, you will need to learn where it grows and how to avoid it. […] Mold can become a significant problem if it remains undiscovered or unaddressed. Allergy symptoms can occur when mold is inhaled.
- #3 Fungal Allergen and Mold Allergy Diagnosis: Role and Relevance of Alternaria alternata Alt a 1 Protein Familyhttps://www.mdpi.com/2309-608X/8/3/277
Alternaria is a genus of worldwide fungi found in different habitats such as soil, the atmosphere, plants or indoor environments. […] A. alternata is considered one of the most important sources of fungal allergens worldwide and it is associated with severe asthma and respiratory status. […] There are several epidemiologic studies about fungal allergy prevalence, but the data vary according to the method of diagnosis. […] It is estimated that the prevalence of allergies to molds is about 3â10%, although the prevalence of fungal sensitization shows a wide geographical variability. […] Among the allergenic mold species, Alternaria alternata, Aspergillus fumigatus, Cladosporium herbarum and Penicillium notatum are the ones with the highest prevalence in allergic disease or sensitizations.
- #4 Fungal AeroallergensâThe Impact of Climate Changehttps://www.mdpi.com/2309-608X/9/5/544
The incidence of allergic diseases in the world is rapidly increasing, and according to the estimates of the World Allergy Organization (WAO), it ranges from 10â40%, depending on the country. In most developed countries, allergy affects over 20% of the population. […] The prevalence of respiratory allergy to fungi is not fully known. Still, it is estimated to affect about 20â30% of sensitive subjects (predisposed to allergies), or up to 6% of the general population. […] The occurrence of fungal spores in the air is seasonal. Their peak concentration is recorded mainly in summer due to the availability of nutrients in the soil, favorable temperature, and humidity and in early autumn when rainy days are followed by sunny, dry, and windy days. […] Allergy to fungi manifests itself as immediate type I hypersensitivity mediated by immunoglobulin E, and as type II, III, and IV reactions. […] The vast spectrum of clinical symptoms caused by fungal allergens includes rhinitis, conjunctivitis, urticaria, or atopic dermatitis. […] The increasing incidence of allergic respiratory diseases suggests the need for extension of diagnostics to include new species of fungi.
- #5 Who is most at risk for mold allergies? New study uncovers prevalence of mold allergies in the US | Labcorphttps://www.labcorp.com/education-events/articles/mold-allergies-allergic-reactions-prevalence-US
Mold can be found almost anywhere, but researchers are still learning about how common mold allergies are beyond a couple of well-known mold species (e.g., Alternaria alternata, Aspergillus fumigatus). […] According to the research paper, the study is the most comprehensive of its kind to date to assess the prevalence and distribution of mold allergies in the U.S. […] According to the studys results, high mold sensitivity appeared to be most common among men, teenagers and those with atopic dermatitis and asthma. Mold sensitivity was also higher in urban areas and in grasslands and prairies, which have drier climates and lower annual rainfall (e.g., Colorado, Oklahoma, Kansas, New Mexico). […] Identifying the specific mold type is important, as different types can introduce a variety of harmful immune responses. For example, researchers in the study noted a strong association between mold exposure and asthma symptoms, as well as a relationship between worsened asthma symptoms and house dampness (which can increase the risk of mold growth). A comprehensive allergy test profile design can help differentiate mold types and support allergy management and treatment, especially for those with asthma or atopic dermatitis, as well as people living in urban areas or grassland and prairie regions, where the risk of mold allergy appears to be higher.
- #6 Fungal Allergen and Mold Allergy Diagnosis: Role and Relevance of Alternaria alternata Alt a 1 Protein Familyhttps://www.mdpi.com/2309-608X/8/3/277
Data from the European Community show a prevalence of positive skin prick tests (SPT) using Alternaria and Cladosporium allergenic sources ranged from 0.2% to 14.4% in the adult general population (aged 20â44). […] In the USA, fungal sensitization of asthmatic patients revealed a prevalence of 80%. […] A. alternata is considered one of the most important fungal allergens worldwide and is associated with severe asthma and respiratory status. […] The Global Asthma and Allergy European Network (GA2LEN) is a consortium of leading European research centers specialized in allergic diseases, which include asthma. […] The GA2LEN initiative performed a study in 14 countries of the European Community (n = 3034) and showed a prevalence of sensitization to A. alternata of 9%, ranging from 2% in Finland to 23.8% in Greece. […] In the United States, the prevalence of A. alternata sensitization in the general population (aged 6 to 74 years) was about 13%. […] In Spain, this prevalence was estimated to be around 20%.
- #7 Fungal Allergen and Mold Allergy Diagnosis: Role and Relevance of Alternaria alternata Alt a 1 Protein Familyhttps://www.mdpi.com/2309-608X/8/3/277
Data from the European Community show a prevalence of positive skin prick tests (SPT) using Alternaria and Cladosporium allergenic sources ranged from 0.2% to 14.4% in the adult general population (aged 20â44). […] In the USA, fungal sensitization of asthmatic patients revealed a prevalence of 80%. […] A. alternata is considered one of the most important fungal allergens worldwide and is associated with severe asthma and respiratory status. […] The Global Asthma and Allergy European Network (GA2LEN) is a consortium of leading European research centers specialized in allergic diseases, which include asthma. […] The GA2LEN initiative performed a study in 14 countries of the European Community (n = 3034) and showed a prevalence of sensitization to A. alternata of 9%, ranging from 2% in Finland to 23.8% in Greece. […] In the United States, the prevalence of A. alternata sensitization in the general population (aged 6 to 74 years) was about 13%. […] In Spain, this prevalence was estimated to be around 20%.
- #8 Fungal Allergen and Mold Allergy Diagnosis: Role and Relevance of Alternaria alternata Alt a 1 Protein Familyhttps://www.mdpi.com/2309-608X/8/3/277
Data from the European Community show a prevalence of positive skin prick tests (SPT) using Alternaria and Cladosporium allergenic sources ranged from 0.2% to 14.4% in the adult general population (aged 20â44). […] In the USA, fungal sensitization of asthmatic patients revealed a prevalence of 80%. […] A. alternata is considered one of the most important fungal allergens worldwide and is associated with severe asthma and respiratory status. […] The Global Asthma and Allergy European Network (GA2LEN) is a consortium of leading European research centers specialized in allergic diseases, which include asthma. […] The GA2LEN initiative performed a study in 14 countries of the European Community (n = 3034) and showed a prevalence of sensitization to A. alternata of 9%, ranging from 2% in Finland to 23.8% in Greece. […] In the United States, the prevalence of A. alternata sensitization in the general population (aged 6 to 74 years) was about 13%. […] In Spain, this prevalence was estimated to be around 20%.
- #9 Who is most at risk for mold allergies? New study uncovers prevalence of mold allergies in the US | Labcorphttps://www.labcorp.com/education-events/articles/mold-allergies-allergic-reactions-prevalence-US
Mold can be found almost anywhere, but researchers are still learning about how common mold allergies are beyond a couple of well-known mold species (e.g., Alternaria alternata, Aspergillus fumigatus). […] According to the research paper, the study is the most comprehensive of its kind to date to assess the prevalence and distribution of mold allergies in the U.S. […] According to the studys results, high mold sensitivity appeared to be most common among men, teenagers and those with atopic dermatitis and asthma. Mold sensitivity was also higher in urban areas and in grasslands and prairies, which have drier climates and lower annual rainfall (e.g., Colorado, Oklahoma, Kansas, New Mexico). […] Identifying the specific mold type is important, as different types can introduce a variety of harmful immune responses. For example, researchers in the study noted a strong association between mold exposure and asthma symptoms, as well as a relationship between worsened asthma symptoms and house dampness (which can increase the risk of mold growth). A comprehensive allergy test profile design can help differentiate mold types and support allergy management and treatment, especially for those with asthma or atopic dermatitis, as well as people living in urban areas or grassland and prairie regions, where the risk of mold allergy appears to be higher.
- #10 Mold Allergy |https://asthmaandallergies.org/asthma-allergies/mold-allergy/
Molds live everywhere. Disturbing a mold source can disperse mold spores into the air, triggering an allergic response in some people. […] Although there are many types of molds, only a few dozen are known to cause allergic reactions. Molds most likely to trigger an allergic response include the following: Alternaria, Aspergillus, Aureobasidium (Pullularia), Cladosporium (hormodendrum), Epicoccum, Fusarium, Helmin-thosporium, Mucor, Pencillium, Rhizopus. […] It is common for people to develop an allergy to one or more types of mold if they, or other family members, have a history of allergic responses to things such as pollen or animal dander. […] People in some occupations have more exposure to mold and are at greater risk of developing a mold allergy. These workers include: Farmers, Dairyworkers, Loggers, Bakers, Mill workers, Carpenters, Greenhouse employees, Winemakers, Furniture repairers.
- #11 Who is most at risk for mold allergies? New study uncovers prevalence of mold allergies in the US | Labcorphttps://www.labcorp.com/education-events/articles/mold-allergies-allergic-reactions-prevalence-US
Mold can be found almost anywhere, but researchers are still learning about how common mold allergies are beyond a couple of well-known mold species (e.g., Alternaria alternata, Aspergillus fumigatus). […] According to the research paper, the study is the most comprehensive of its kind to date to assess the prevalence and distribution of mold allergies in the U.S. […] According to the studys results, high mold sensitivity appeared to be most common among men, teenagers and those with atopic dermatitis and asthma. Mold sensitivity was also higher in urban areas and in grasslands and prairies, which have drier climates and lower annual rainfall (e.g., Colorado, Oklahoma, Kansas, New Mexico). […] Identifying the specific mold type is important, as different types can introduce a variety of harmful immune responses. For example, researchers in the study noted a strong association between mold exposure and asthma symptoms, as well as a relationship between worsened asthma symptoms and house dampness (which can increase the risk of mold growth). A comprehensive allergy test profile design can help differentiate mold types and support allergy management and treatment, especially for those with asthma or atopic dermatitis, as well as people living in urban areas or grassland and prairie regions, where the risk of mold allergy appears to be higher.
- #12 Fungal Allergen and Mold Allergy Diagnosis: Role and Relevance of Alternaria alternata Alt a 1 Protein Familyhttps://www.mdpi.com/2309-608X/8/3/277
Alternaria is a genus of worldwide fungi found in different habitats such as soil, the atmosphere, plants or indoor environments. […] A. alternata is considered one of the most important sources of fungal allergens worldwide and it is associated with severe asthma and respiratory status. […] There are several epidemiologic studies about fungal allergy prevalence, but the data vary according to the method of diagnosis. […] It is estimated that the prevalence of allergies to molds is about 3â10%, although the prevalence of fungal sensitization shows a wide geographical variability. […] Among the allergenic mold species, Alternaria alternata, Aspergillus fumigatus, Cladosporium herbarum and Penicillium notatum are the ones with the highest prevalence in allergic disease or sensitizations.
- #13 Mold Allergy |https://asthmaandallergies.org/asthma-allergies/mold-allergy/
Molds live everywhere. Disturbing a mold source can disperse mold spores into the air, triggering an allergic response in some people. […] Although there are many types of molds, only a few dozen are known to cause allergic reactions. Molds most likely to trigger an allergic response include the following: Alternaria, Aspergillus, Aureobasidium (Pullularia), Cladosporium (hormodendrum), Epicoccum, Fusarium, Helmin-thosporium, Mucor, Pencillium, Rhizopus. […] It is common for people to develop an allergy to one or more types of mold if they, or other family members, have a history of allergic responses to things such as pollen or animal dander. […] People in some occupations have more exposure to mold and are at greater risk of developing a mold allergy. These workers include: Farmers, Dairyworkers, Loggers, Bakers, Mill workers, Carpenters, Greenhouse employees, Winemakers, Furniture repairers.
- #14 Mold Allergy |https://asthmaandallergies.org/asthma-allergies/mold-allergy/
Molds live everywhere. Disturbing a mold source can disperse mold spores into the air, triggering an allergic response in some people. […] Although there are many types of molds, only a few dozen are known to cause allergic reactions. Molds most likely to trigger an allergic response include the following: Alternaria, Aspergillus, Aureobasidium (Pullularia), Cladosporium (hormodendrum), Epicoccum, Fusarium, Helmin-thosporium, Mucor, Pencillium, Rhizopus. […] It is common for people to develop an allergy to one or more types of mold if they, or other family members, have a history of allergic responses to things such as pollen or animal dander. […] People in some occupations have more exposure to mold and are at greater risk of developing a mold allergy. These workers include: Farmers, Dairyworkers, Loggers, Bakers, Mill workers, Carpenters, Greenhouse employees, Winemakers, Furniture repairers.
- #15https://www.wyndly.com/blogs/learn/epicoccum-mold-allergy?srsltid=AfmBOopuFmAKx3teKMxhzik70BuvZaAgkvWVvLDA3MAlOEXRkf9hMv5N
Epicoccum mold allergy is not as common as other types of mold allergies but it’s still prevalent enough to cause significant discomfort to those affected. […] The prevalence of Epicoccum mold allergy is more complex. It depends on a combination of environmental factors, such as humidity and temperature, and individual factors like genetic predisposition and immune response. […] Understanding the epidemiology of Epicoccum can be key to formulating effective preventive measures and treatment options for those affected. […] The primary route of exposure to Epicoccum mold is through inhalation of airborne mold spores. […] This underlines the need for effective mold management strategies to minimize exposure and mitigate the risk of developing a mold allergy. […] Detection of Epicoccum mold allergy is typically done through a combination of a clinical examination, patient history, and specific allergy testing. […] Epicoccum mold allergy can be treated through a combination of medication, allergen avoidance strategies, and immunotherapy. […] Always consult a healthcare provider for personalized advice.
- #16 Mold Allergy – Symptoms, Prevention, and Treatmenthttps://aafa.org/allergies/types-of-allergies/mold-allergy/
Mold is also a common cause of allergy and asthma symptoms. […] Inhaling the spores causes allergic reactions in some people. […] If you have asthma and are allergic to mold, you may have allergic asthma. […] Mold allergy can cause an allergic reaction right away. […] Outdoor molds often cause allergy symptoms in summer and fall. […] Indoor molds may cause allergy symptoms year-round. […] To diagnose an allergy to mold or fungi, your doctor will take a complete medical history and do a physical exam. […] If they think you have a mold allergy, the doctor often will do allergy skin tests or a blood test. […] Common household molds are also linked to childhood asthma. […] To help you manage your asthma and allergies, it is important to reduce your exposure to mold. […] If your home has flooded, you need to act quickly to prevent mold. […] The presence of mold can affect your health.
- #17 Fungal AeroallergensâThe Impact of Climate Changehttps://www.mdpi.com/2309-608X/9/5/544
The incidence of allergic diseases in the world is rapidly increasing, and according to the estimates of the World Allergy Organization (WAO), it ranges from 10â40%, depending on the country. In most developed countries, allergy affects over 20% of the population. […] The prevalence of respiratory allergy to fungi is not fully known. Still, it is estimated to affect about 20â30% of sensitive subjects (predisposed to allergies), or up to 6% of the general population. […] The occurrence of fungal spores in the air is seasonal. Their peak concentration is recorded mainly in summer due to the availability of nutrients in the soil, favorable temperature, and humidity and in early autumn when rainy days are followed by sunny, dry, and windy days. […] Allergy to fungi manifests itself as immediate type I hypersensitivity mediated by immunoglobulin E, and as type II, III, and IV reactions. […] The vast spectrum of clinical symptoms caused by fungal allergens includes rhinitis, conjunctivitis, urticaria, or atopic dermatitis. […] The increasing incidence of allergic respiratory diseases suggests the need for extension of diagnostics to include new species of fungi.
- #18 Mold Allergy – Allergy & Asthma Networkhttps://allergyasthmanetwork.org/allergies/mold-allergy/
For many people, exposure to mold causes no issues. But some people have allergic reactions to mold. The National Institutes of Health estimates that about 3-10% of people have a mold allergy. […] Mold spores are harmful to people with asthma. The small size of mold spores allows them to pass more easily into the lower airways, where they can trigger an asthma attack. Mold spores may also interact with other outdoor allergens and air pollution. This can increase the asthma risk from those substances. […] Yes, you can have an indoor mold allergy and outdoor mold allergy. If you are allergic to mold, you will need to learn where it grows and how to avoid it. […] Mold can become a significant problem if it remains undiscovered or unaddressed. Allergy symptoms can occur when mold is inhaled.
- #19 Mold and dampness exposure and allergic outcomes from birth to adolescence: data from the BAMSE cohorthttps://pmc.ncbi.nlm.nih.gov/articles/PMC5434946/
Exposure to moldy or damp indoor environments is associated with allergic disease in young children, but it is unclear whether the effects persist to adolescence. […] Exposure to any mold or dampness indicator was associated with asthma up to 16 years of age (OR 1.31; 95% CI 1.08-1.59), while exposure to mold odor (OR 1.29; 95% CI 1.03-1.62) and visible mold (OR 1.28; 95% CI 1.04-1.58) were associated with rhinitis. […] Exposure to any mold or dampness indicator was associated with persistent asthma (OR 1.73; 95% CI 1.20-2.50), but not with early-transient or late-onset asthma. […] Exposure to mold or dampness during infancy increased the risk of asthma and rhinitis up to 16 years of age, particularly for nonallergic disease. […] Exposure to any mold or dampness indicator primarily increases the risk of nonallergic asthma and rhinitis, which may speak in favor of irritative rather than allergic inflammatory changes in the airways.
- #20 Mold and dampness exposure and allergic outcomes from birth to adolescence: data from the BAMSE cohorthttps://pmc.ncbi.nlm.nih.gov/articles/PMC5434946/
Exposure to moldy or damp indoor environments is associated with allergic disease in young children, but it is unclear whether the effects persist to adolescence. […] Exposure to any mold or dampness indicator was associated with asthma up to 16 years of age (OR 1.31; 95% CI 1.08-1.59), while exposure to mold odor (OR 1.29; 95% CI 1.03-1.62) and visible mold (OR 1.28; 95% CI 1.04-1.58) were associated with rhinitis. […] Exposure to any mold or dampness indicator was associated with persistent asthma (OR 1.73; 95% CI 1.20-2.50), but not with early-transient or late-onset asthma. […] Exposure to mold or dampness during infancy increased the risk of asthma and rhinitis up to 16 years of age, particularly for nonallergic disease. […] Exposure to any mold or dampness indicator primarily increases the risk of nonallergic asthma and rhinitis, which may speak in favor of irritative rather than allergic inflammatory changes in the airways.
- #21 Mold and dampness exposure and allergic outcomes from birth to adolescence: data from the BAMSE cohorthttps://pmc.ncbi.nlm.nih.gov/articles/PMC5434946/
Exposure to moldy or damp indoor environments is associated with allergic disease in young children, but it is unclear whether the effects persist to adolescence. […] Exposure to any mold or dampness indicator was associated with asthma up to 16 years of age (OR 1.31; 95% CI 1.08-1.59), while exposure to mold odor (OR 1.29; 95% CI 1.03-1.62) and visible mold (OR 1.28; 95% CI 1.04-1.58) were associated with rhinitis. […] Exposure to any mold or dampness indicator was associated with persistent asthma (OR 1.73; 95% CI 1.20-2.50), but not with early-transient or late-onset asthma. […] Exposure to mold or dampness during infancy increased the risk of asthma and rhinitis up to 16 years of age, particularly for nonallergic disease. […] Exposure to any mold or dampness indicator primarily increases the risk of nonallergic asthma and rhinitis, which may speak in favor of irritative rather than allergic inflammatory changes in the airways.
- #22 Household mold exposure in association with childhood asthma and allergic rhinitis in a northwestern city and a southern city of China – Li – Journal of Thoracic Diseasehttps://jtd.amegroups.org/article/view/64951/html
There is abundant epidemiologic evidence on the association of dampness and mold exposure with various respiratory problems, including upper respiratory tract symptoms, chronic wheezing and cough, and development of asthma in children. […] Epidemiologic studies conducted in different climates have suggested that home dampness and mold may also increase the risk of allergic rhinitis in children. […] Most of the studies included in this review were conducted in the humid climate. There have been few studies available on dampness or mold and children’s rhinitis in cold and dry areas where dampness-related mold problems about the sources of water damage and window condensation are indeed common in the winter. […] The ISAAC phase two studies, involving 21 countries, found that residential mold exposure was associated with increased rhinitis among school children (812 years). […] The CCHH (China, Children, Homes, Health) study reported that mold odor was associated with asthma (OR =1.90) and allergic rhinitis (OR =1.251.44). […] Our findings suggest that breastfeeding may enhance asthma and allergic rhinitis risk of mold, but not substance allergy, in children.
- #23https://www.healio.com/news/allergy-asthma/20230127/indoor-visible-mold-associated-with-rhinitis-in-adults
Exposure to visible mold indoors was significantly associated with increased risk for current rhinitis and allergic rhinitis, with stronger associations among patients who never had asthma, according to a letter published in Allergy. […] Researchers classified 61.6% of these participants as having current rhinitis, due to having had sneezing, runny nose or stuffy nose without any cold or flu in the previous 12 months, with 41.4% of those patients classified with allergic rhinitis following at least one positive skin prick test. […] Results showed that ever exposures (adjusted OR = 1.51; 95% CI, 1.1-2.08) and current exposures (aOR = 1.75; 95% CI, 1.18-2.6) to mold had significant associations with current rhinitis. […] Associations with allergic rhinitis were statistically significant for ever exposures (aOR = 1.8; 95% CI, 1.25-2.6) and current exposures (aOR = 2.01; 95% CI, 1.3-3.1) as well.
- #24https://www.healio.com/news/allergy-asthma/20230127/indoor-visible-mold-associated-with-rhinitis-in-adults
Exposure to visible mold indoors was significantly associated with increased risk for current rhinitis and allergic rhinitis, with stronger associations among patients who never had asthma, according to a letter published in Allergy. […] Researchers classified 61.6% of these participants as having current rhinitis, due to having had sneezing, runny nose or stuffy nose without any cold or flu in the previous 12 months, with 41.4% of those patients classified with allergic rhinitis following at least one positive skin prick test. […] Results showed that ever exposures (adjusted OR = 1.51; 95% CI, 1.1-2.08) and current exposures (aOR = 1.75; 95% CI, 1.18-2.6) to mold had significant associations with current rhinitis. […] Associations with allergic rhinitis were statistically significant for ever exposures (aOR = 1.8; 95% CI, 1.25-2.6) and current exposures (aOR = 2.01; 95% CI, 1.3-3.1) as well.
- #25 Sniffing the Air for Mold | Tulane University Newshttps://news.tulane.edu/news/sniffing-air-mold
Although it resembles nothing so much as a UFO, the metal contraption atop the Deming Pavilion on Tulane’s downtown campus is actually part of serious science. Tulane University epidemiologist Felicia Rabito and her team are using a spore trap to collect air samples in New Orleans to find out if there is a relationship between environmental exposure and mold allergies in city residents. […] The Burkard trap is one of four in the area provided by Rabito’s collaborators in allergy and immunology at Ochsner Medical Foundation, which will be collecting air samples during this year and 2009. […] The samples will be sent to the Aerobiology Lab at the University of Tulsa, a certified pollen and mold counting station of the National Allergy Bureau. […] For the other half, the team is surveying between 1,200 and 1,500 people who have gone to allergy clinics at Ochsner for post-Katrina allergies. The team is particularly interested in people who were diagnosed with mold allergies and who have been living in or renovating flooded structures. […] The research question is whether we are seeing an increase in mold sensitization in those exposed to a greater amount of mold.
- #26https://www.wyndly.com/blogs/learn/epicoccum-mold-allergy?srsltid=AfmBOopuFmAKx3teKMxhzik70BuvZaAgkvWVvLDA3MAlOEXRkf9hMv5N
Epicoccum mold allergy is not as common as other types of mold allergies but it’s still prevalent enough to cause significant discomfort to those affected. […] The prevalence of Epicoccum mold allergy is more complex. It depends on a combination of environmental factors, such as humidity and temperature, and individual factors like genetic predisposition and immune response. […] Understanding the epidemiology of Epicoccum can be key to formulating effective preventive measures and treatment options for those affected. […] The primary route of exposure to Epicoccum mold is through inhalation of airborne mold spores. […] This underlines the need for effective mold management strategies to minimize exposure and mitigate the risk of developing a mold allergy. […] Detection of Epicoccum mold allergy is typically done through a combination of a clinical examination, patient history, and specific allergy testing. […] Epicoccum mold allergy can be treated through a combination of medication, allergen avoidance strategies, and immunotherapy. […] Always consult a healthcare provider for personalized advice.
- #27https://journals.lww.com/environepidem/fulltext/2020/08000/quantitative_and_semiquantitative_estimates_of.4.aspx
Previous epidemiologic studies of dampness and mold relied on metrics that did not fully assess exposure-response relationships. Our objective was to examine quantitative metrics of dampness and mold during infancy and respiratory health outcomes during childhood. […] Children residing in homes with 0.29 m2 of moisture damage were significantly more likely to have wheezing at age 3 and persistent wheeze through age 7 (adjusted odds ratio [aOR] = 2.2; 95% confidence interval [CI] = 1.0, 4.3 and aOR = 3.2; CI = 1.3, 7.5, respectively). Additionally, homes having 0.19 m2 of mold damage were associated with wheezing at age 3 and early transient wheeze assessed at age 7 (aOR = 2.9; CI = 1.3, 6.4 and aOR = 3.5; CI = 1.5, 8.2, respectively). […] Our data indicate that only the highest categories analyzed for mold (0.19 m2) and moisture damage (0.29 m2) in homes at age 1 were significantly associated with wheeze at ages 3 and 7; however, data below these levels were too sparse to assess the shape of the relationship or explore potential health-relevant thresholds.
- #28https://journals.lww.com/environepidem/fulltext/2020/08000/quantitative_and_semiquantitative_estimates_of.4.aspx
Previous epidemiologic studies of dampness and mold relied on metrics that did not fully assess exposure-response relationships. Our objective was to examine quantitative metrics of dampness and mold during infancy and respiratory health outcomes during childhood. […] Children residing in homes with 0.29 m2 of moisture damage were significantly more likely to have wheezing at age 3 and persistent wheeze through age 7 (adjusted odds ratio [aOR] = 2.2; 95% confidence interval [CI] = 1.0, 4.3 and aOR = 3.2; CI = 1.3, 7.5, respectively). Additionally, homes having 0.19 m2 of mold damage were associated with wheezing at age 3 and early transient wheeze assessed at age 7 (aOR = 2.9; CI = 1.3, 6.4 and aOR = 3.5; CI = 1.5, 8.2, respectively). […] Our data indicate that only the highest categories analyzed for mold (0.19 m2) and moisture damage (0.29 m2) in homes at age 1 were significantly associated with wheeze at ages 3 and 7; however, data below these levels were too sparse to assess the shape of the relationship or explore potential health-relevant thresholds.
- #29https://journals.lww.com/environepidem/fulltext/2020/08000/quantitative_and_semiquantitative_estimates_of.4.aspx
We found significant associations of persistent wheeze with both moisture and mold damage areas. […] We found that the odds of age 3 wheeze almost tripled (aOR = 2.9) when the home had high levels of mold (0.19 m2) compared with no mold and almost doubled (aOR = 2.2) when the home had high levels of moisture damage (0.29 m2). […] The categorical variable findings suggested there may be a specific threshold associated with increased risk of wheezing or asthma and the threshold could possibly occur between the third and fourth quartile (0.0065-0.19 m2 for mold damage and 0.093-0.29 m2 for moisture damage); however, this study did not specifically determine where or if such thresholds occur. […] While the highest categories used in these analyses (0.19 m2 mold damage and 0.29 m2 moisture damage) were associated with significantly and substantially increased wheezing, we would not suggest using these values as health-relevant thresholds.
- #30 Guidance for Healthcare-Associated Mold Outbreaks | Fungal Diseases | CDChttps://www.cdc.gov/fungal/php/guidance-investigating-outbreaks/mold-healthcare.html
Invasive mold infections can affect people with weakened immune systems, such as organ or stem cell transplant recipients. Although rare, mold outbreaks can occur in healthcare facilities causing severe illness and death among patients. […] Two common types of healthcare-associated invasive mold infections include mucormycosis and aspergillosis. Depending on the organism and patient characteristics, death rates can be more than 50%. […] Notify the local or state health department immediately when healthcare personnel suspect a mold infection cluster. Do not wait for laboratory confirmation to report a cluster or outbreak. Laboratory confirmation for some molds takes longer than it would for many other fungi. […] Consider reporting and beginning investigations for suspected mold outbreaks if either of the following are observed: A cluster of invasive mold infections above the facility’s baseline rate. Cases with onset 1 week after admission.
- #31 Guidance for Healthcare-Associated Mold Outbreaks | Fungal Diseases | CDChttps://www.cdc.gov/fungal/php/guidance-investigating-outbreaks/mold-healthcare.html
Invasive mold infections can affect people with weakened immune systems, such as organ or stem cell transplant recipients. Although rare, mold outbreaks can occur in healthcare facilities causing severe illness and death among patients. […] Two common types of healthcare-associated invasive mold infections include mucormycosis and aspergillosis. Depending on the organism and patient characteristics, death rates can be more than 50%. […] Notify the local or state health department immediately when healthcare personnel suspect a mold infection cluster. Do not wait for laboratory confirmation to report a cluster or outbreak. Laboratory confirmation for some molds takes longer than it would for many other fungi. […] Consider reporting and beginning investigations for suspected mold outbreaks if either of the following are observed: A cluster of invasive mold infections above the facility’s baseline rate. Cases with onset 1 week after admission.
- #32 Guidance for Healthcare-Associated Mold Outbreaks | Fungal Diseases | CDChttps://www.cdc.gov/fungal/php/guidance-investigating-outbreaks/mold-healthcare.html
Determining whether a cluster of mold infections (i.e., a suspected outbreak) represents a true outbreak can be difficult for several reasons: Diagnosing a case often requires multiple methods (e.g., culture, histopathology, serologic testing, PCR). Case numbers are often small, making it difficult to tell if infection rates are truly above baseline. The incubation period for most mold infections is unclear. Infections beginning 1 week after admission should be suspected. […] Notify patients at highest risk for severe mold infections as soon as a cluster or outbreak are suspected. Patients at high risk include transplant recipients and patients with hematologic malignancies. […] CDC works closely with local and state health departments to help identify, investigate, and contain fungal outbreaks. Public health officials, healthcare facilities, and laboratories can request CDC assistance with fungal diagnostics and epidemiologic investigations by emailing [email protected].
- #33 Observational Epidemiology and Indoor Mold Exposure: An Outbreak Investigationhttps://apha.confex.com/apha/131am/techprogram/paper_57770.htm
Unusual indoor mold exposures have been associated with both irritant symptoms and allergic respiratory disease. […] A cross sectional questionnaire study was used to investigate self-reported symptom and disease prevalence in the problem building and a nearby county owned building selected as a comparison. […] After establishing a case definition for respiratory illness, risk for respiratory problems due to exposure to mold and water damage was estimated to be 3 to 4 times background. Clinical evaluations supported the diagnosis of new onset allergic respiratory disease among building occupants.
- #34 Observational Epidemiology and Indoor Mold Exposure: An Outbreak Investigationhttps://apha.confex.com/apha/131am/techprogram/paper_57770.htm
Unusual indoor mold exposures have been associated with both irritant symptoms and allergic respiratory disease. […] A cross sectional questionnaire study was used to investigate self-reported symptom and disease prevalence in the problem building and a nearby county owned building selected as a comparison. […] After establishing a case definition for respiratory illness, risk for respiratory problems due to exposure to mold and water damage was estimated to be 3 to 4 times background. Clinical evaluations supported the diagnosis of new onset allergic respiratory disease among building occupants.
- #35 Household mold exposure in association with childhood asthma and allergic rhinitis in a northwestern city and a southern city of China – Li – Journal of Thoracic Diseasehttps://jtd.amegroups.org/article/view/64951/html
The prevalence of asthma and allergic diseases has increased rapidly in Chinese cities over the past decades. Few studies have examined the potential role of household mold in asthma and allergies in Chinese cities. […] The prevalence rates of asthma, substance allergy, allergic rhinitis, and mold, were all higher in Wuhan than in Lanzhou. We observed significant associations of household mold with increased prevalence for both asthma [odds ratio (OR) =2.399, 95% confidence interval (95% CI): 1.3094.398], substance allergy (OR =1.729, 95% CI: 1.2822.332) and allergic rhinitis (OR =1.969, 95% CI: 1.4912.600), with spatial heterogeneity across urban versus suburban schools. The mold effect was modified by age group and breast-feeding status. […] Across two climatically distinct cities, household mold exposure was significantly associated with an increased risk for asthma and allergies. Younger children and children from the suburbs were more likely to be affected by mold.
- #36 Mold and dampness exposure and allergic outcomes from birth to adolescence: data from the BAMSE cohorthttps://pmc.ncbi.nlm.nih.gov/articles/PMC5434946/
Exposure to moldy or damp indoor environments is associated with allergic disease in young children, but it is unclear whether the effects persist to adolescence. […] Exposure to any mold or dampness indicator was associated with asthma up to 16 years of age (OR 1.31; 95% CI 1.08-1.59), while exposure to mold odor (OR 1.29; 95% CI 1.03-1.62) and visible mold (OR 1.28; 95% CI 1.04-1.58) were associated with rhinitis. […] Exposure to any mold or dampness indicator was associated with persistent asthma (OR 1.73; 95% CI 1.20-2.50), but not with early-transient or late-onset asthma. […] Exposure to mold or dampness during infancy increased the risk of asthma and rhinitis up to 16 years of age, particularly for nonallergic disease. […] Exposure to any mold or dampness indicator primarily increases the risk of nonallergic asthma and rhinitis, which may speak in favor of irritative rather than allergic inflammatory changes in the airways.
- #37 Indoor exposure to molds and allergic sensitization.https://pmc.ncbi.nlm.nih.gov/articles/PMC1240910/
Evidence that indoor dampness and mold growth are associated with respiratory health has been accumulating, but few studies have been able to examine health risks in relation to measured levels of indoor mold exposure. […] In particular, little is known about the contribution of indoor molds to the development of allergic sensitization. […] We examined whether allergic sensitization in children is associated with higher fungal spore count in settled house dust sampled from living room floors. […] We found that mold spore counts for Cladosporium and Aspergillus were associated with an increased risk of allergic sensitization. […] Sensitized children exposed to high levels of mold spores (90th percentile) were more likely to suffer from symptoms of rhinoconjunctivitis. […] We conclude that elevated indoor concentrations of molds in wintertime might play a role in increasing the risk of developing atopic symptoms and allergic sensitization not only to molds but also to other common, inhaled allergens. […] These effects were strongest in the group of children who had lived in the same home since birth.
- #38 Indoor exposure to molds and allergic sensitization.https://pmc.ncbi.nlm.nih.gov/articles/PMC1240910/
Evidence that indoor dampness and mold growth are associated with respiratory health has been accumulating, but few studies have been able to examine health risks in relation to measured levels of indoor mold exposure. […] In particular, little is known about the contribution of indoor molds to the development of allergic sensitization. […] We examined whether allergic sensitization in children is associated with higher fungal spore count in settled house dust sampled from living room floors. […] We found that mold spore counts for Cladosporium and Aspergillus were associated with an increased risk of allergic sensitization. […] Sensitized children exposed to high levels of mold spores (90th percentile) were more likely to suffer from symptoms of rhinoconjunctivitis. […] We conclude that elevated indoor concentrations of molds in wintertime might play a role in increasing the risk of developing atopic symptoms and allergic sensitization not only to molds but also to other common, inhaled allergens. […] These effects were strongest in the group of children who had lived in the same home since birth.
- #39https://www.iowaallergyclinic.com/blog/mold-allergy-understanding-the-symptoms-impact-and-solutions
While most people associate mold with damp spring and summer conditions, winter poses unique risks. Indoor mold growth can occur as we seal our homes to keep out the cold, creating the perfect environment for mold growth, especially in basements, bathrooms, and poorly ventilated spaces. Understanding these triggers can help you better prepare for mold management during the colder months. Effective mold management requires a proactive approach, including controlling humidity levels, improving ventilation, addressing leaks promptly, cleaning smartly, and conducting regular inspections. If symptoms persist despite these efforts, consulting a specialist is essential. […] At Iowa Allergy, we understand the challenges mold allergy presents and offer personalized care to help you breathe easier. We use advanced diagnostics to confirm mold allergy and identify specific triggers. From immunotherapy to medication management, we tailor solutions to your needs. Seasonal consultations ensure your symptoms remain under control, even during challenging winter months. Don’t let mold allergy affect your health or quality of life. Whether it’s preventing indoor mold growth, addressing symptoms, or finding professional care, you have the power to take action.
- #40 More Mold Allergies After Katrina? | Tulane University Newshttps://news.tulane.edu/news/more-mold-allergies-after-katrina
Researchers at the Tulane School of Public Health and Tropical Medicine have determined that there is no excess risk of adverse respiratory health problems for residents living in post-Katrina New Orleans. […] We undertook the study because there was tremendous concern about potential health effects associated with exposure to mold/dampness as a result of widespread exposure after Katrina, says Felicia Rabito, associate professor of epidemiology, who headed the investigation. […] Rabito and her team of epidemiologists undertook the study to determine if residents living in New Orleans following the devastation of Hurricane Katrina were at higher risk for allergic mold sensitization. […] The study found, however, that their mold sensitivity rates did not appear to differ between those exposed to mold and those not exposed. In addition, their mold sensitivity rates are not different from that of the U.S. population at large, Rabito says. […] Although there may be populations uniquely sensitive, the implications of this study and findings from our previous research are that in terms of respiratory health, it appears that there is no lasting effect of Katrina, Rabito says.
- #41 Mold and dampness exposure and allergic outcomes from birth to adolescence: data from the BAMSE cohorthttps://pmc.ncbi.nlm.nih.gov/articles/PMC5434946/
Exposure to moldy or damp indoor environments is associated with allergic disease in young children, but it is unclear whether the effects persist to adolescence. […] Exposure to any mold or dampness indicator was associated with asthma up to 16 years of age (OR 1.31; 95% CI 1.08-1.59), while exposure to mold odor (OR 1.29; 95% CI 1.03-1.62) and visible mold (OR 1.28; 95% CI 1.04-1.58) were associated with rhinitis. […] Exposure to any mold or dampness indicator was associated with persistent asthma (OR 1.73; 95% CI 1.20-2.50), but not with early-transient or late-onset asthma. […] Exposure to mold or dampness during infancy increased the risk of asthma and rhinitis up to 16 years of age, particularly for nonallergic disease. […] Exposure to any mold or dampness indicator primarily increases the risk of nonallergic asthma and rhinitis, which may speak in favor of irritative rather than allergic inflammatory changes in the airways.
- #42 Fungal AeroallergensâThe Impact of Climate Changehttps://www.mdpi.com/2309-608X/9/5/544
The incidence of allergic diseases in the world is rapidly increasing, and according to the estimates of the World Allergy Organization (WAO), it ranges from 10â40%, depending on the country. In most developed countries, allergy affects over 20% of the population. […] The prevalence of respiratory allergy to fungi is not fully known. Still, it is estimated to affect about 20â30% of sensitive subjects (predisposed to allergies), or up to 6% of the general population. […] The occurrence of fungal spores in the air is seasonal. Their peak concentration is recorded mainly in summer due to the availability of nutrients in the soil, favorable temperature, and humidity and in early autumn when rainy days are followed by sunny, dry, and windy days. […] Allergy to fungi manifests itself as immediate type I hypersensitivity mediated by immunoglobulin E, and as type II, III, and IV reactions. […] The vast spectrum of clinical symptoms caused by fungal allergens includes rhinitis, conjunctivitis, urticaria, or atopic dermatitis. […] The increasing incidence of allergic respiratory diseases suggests the need for extension of diagnostics to include new species of fungi.
- #43 Who is most at risk for mold allergies? New study uncovers prevalence of mold allergies in the US | Labcorphttps://www.labcorp.com/education-events/articles/mold-allergies-allergic-reactions-prevalence-US
Mold can be found almost anywhere, but researchers are still learning about how common mold allergies are beyond a couple of well-known mold species (e.g., Alternaria alternata, Aspergillus fumigatus). […] According to the research paper, the study is the most comprehensive of its kind to date to assess the prevalence and distribution of mold allergies in the U.S. […] According to the studys results, high mold sensitivity appeared to be most common among men, teenagers and those with atopic dermatitis and asthma. Mold sensitivity was also higher in urban areas and in grasslands and prairies, which have drier climates and lower annual rainfall (e.g., Colorado, Oklahoma, Kansas, New Mexico). […] Identifying the specific mold type is important, as different types can introduce a variety of harmful immune responses. For example, researchers in the study noted a strong association between mold exposure and asthma symptoms, as well as a relationship between worsened asthma symptoms and house dampness (which can increase the risk of mold growth). A comprehensive allergy test profile design can help differentiate mold types and support allergy management and treatment, especially for those with asthma or atopic dermatitis, as well as people living in urban areas or grassland and prairie regions, where the risk of mold allergy appears to be higher.
- #44https://www.iowaallergyclinic.com/blog/mold-allergy-understanding-the-symptoms-impact-and-solutions
While most people associate mold with damp spring and summer conditions, winter poses unique risks. Indoor mold growth can occur as we seal our homes to keep out the cold, creating the perfect environment for mold growth, especially in basements, bathrooms, and poorly ventilated spaces. Understanding these triggers can help you better prepare for mold management during the colder months. Effective mold management requires a proactive approach, including controlling humidity levels, improving ventilation, addressing leaks promptly, cleaning smartly, and conducting regular inspections. If symptoms persist despite these efforts, consulting a specialist is essential. […] At Iowa Allergy, we understand the challenges mold allergy presents and offer personalized care to help you breathe easier. We use advanced diagnostics to confirm mold allergy and identify specific triggers. From immunotherapy to medication management, we tailor solutions to your needs. Seasonal consultations ensure your symptoms remain under control, even during challenging winter months. Don’t let mold allergy affect your health or quality of life. Whether it’s preventing indoor mold growth, addressing symptoms, or finding professional care, you have the power to take action.
- #45 Mold Allergy – Allergy & Asthma Networkhttps://allergyasthmanetwork.org/allergies/mold-allergy/
Mold allergy treatments include over-the-counter antihistamines, decongestants and intranasal corticosteroids. These common allergy medications can relieve symptoms of runny nose, congestion and itchy and watery eyes. […] One of the best treatments for any allergy is prevention. Limit your exposure to mold and avoid anything known to trigger symptoms. If avoidance is not possible, discuss treatment options with your doctor or allergist.
- #46https://journals.lww.com/environepidem/fulltext/2020/08000/quantitative_and_semiquantitative_estimates_of.4.aspx
The highest categories analyzed for both variables, moisture damage (0.29 m2) and mold damage (0.19 m2), had significant associations with negative health outcomes; however, data below these levels were too sparse to support health-relevant thresholds. […] Many studies have explored the role of indoor mold and dampness on adverse respiratory health effects, including asthma development, asthma exacerbation, and respiratory illnesses. […] Many epidemiologic studies have used dichotomous metrics of visible mold or of surrogate measures like (1 3)–D-glucan levels and did not adequately assess dose-response relationships. […] Research is needed to clarify the dose-response relationships and identify whether or not a possible threshold exists that may that can be easily used in the field and provide helpful information to the public.
- #47 Breathing Easy: Treating Allergic Rhinitis | Science-Based Medicinehttps://sciencebasedmedicine.org/breathing-easy-treating-allergic-rhinitis/
Allergic rhinitis is triggered when the immune system reacts to otherwise harmless airborne substances, such as pollen, dust mites, mold spores, or pet dander. […] The prevalence is increasing, which is attributed in part to climate change causing longer pollen seasons and higher pollen counts. […] Seasonal allergens include pollens from grasses, trees, and weeds, while year-round (perennial) triggers tend to be from indoor exposures to substances such as dust mites, mould spores, pet dander, and (shudder) cockroach droppings. […] Allergic rhinitis is usually suggested if triggers are identified. […] Overall, given the effectiveness of non-drug therapies like saline sprays and rinses, itâs possible to address some cases of allergic rhinitis without medication (or alternative medicines) at all.