Author:
Flores-Torres Armando S.,Samarasinghe Amali E.
Abstract
Graphical AbstractInterplay between infectious agents and allergic milieu. Respiratory infections caused by viruses, bacteria and fungi play an important role in asthma pathogenesis. The immune milieu in allergic asthma may be both defective and protective during respiratory infections. Some bacteria are linked to steroid-resistant neutrophilic asthma and an aberrant immune response. Thermotolerant fungi generally induces a T2 immune response in asthma and are linked to asthma severity and higher corticosteroid requirement. Steroid-resistant neutrophilic asthma is associated with increased airway bacterial burden and reduced bacterial diversity. Corticosteroids and antibiotics induce dysbiosis in asthmatics, which may cause immune system alterations. Biologics and antivirals may be beneficial in some patients. However, the effect of eosinophil depletion on antiviral immunity in asthmatics remains unknown. Influenza and COVID-19 vaccination are recommended in asthmatics, but pneumococcal vaccine benefits are still under debate.
Funder
Office of Extramural Research, National Institutes of Health
American Lung Association
Subject
General Earth and Planetary Sciences
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