title: Role of viral infections in the inception of asthma and allergies during childhood: could they be protective?
authors.forename: F D
authors.initials: FD
authors.lastname: Martinez
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects; D001249:Asthma / Q000453:epidemiology / Q000209:etiology / Q000276:immunology* / Q000821:virology; D002648:Child; D002675:Child, Preschool; D005191:Family Characteristics; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology*; D007223:Infant; D007231:Infant, Newborn; D015995:Prevalence; D012934:Social Isolation; D013601:T-Lymphocytes / Q000276:immunology*; D014777:Virus Diseases / Q000276:immunology*
chemical_list: D000393:Air Pollutants