RESUMO

Single BCG vaccination has been considered as a protective factor against asthma. However the effect of a second dose of BCG on the prevalence rate of asthma and asthma-allergic rhinitis-eczema comorbidity has not been studied exclusively among adolescents. In this ISAAC protocol-based cross sectional study we assessed the association between one single versus two doses of BCG among 2213 individuals aged 13-14 years old. We found no association between BCG revaccination and asthma, associated (OR = 0.68, 95% CI, 0.37-1.25) or not to allergic rhinitis and/or atopic eczema (OR = 1.07, 95% CI, 0.84-1.36).

Assuntos

Asma/prevenção & controle , Vacina BCG , Imunização Secundária , Adolescente , Asma/epidemiologia , Brasil/epidemiologia , Estudos Transversais , Dermatite Atópica/epidemiologia , Dermatite Atópica/prevenção & controle , Humanos , Prevalência , Rinite Alérgica Perene/epidemiologia , Rinite Alérgica Perene/prevenção & controle , Rinite Alérgica Sazonal/epidemiologia , Rinite Alérgica Sazonal/prevenção & controle