title: Multivariate analysis of the role of school-attendance status in the introduction of variola minor into the household.
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001938:Brazil; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000453:epidemiology*; D004812:Epidemiologic Methods; D006801:Humans; D012899:Smallpox / Q000635:transmission*; D013029:Space-Time Clustering