title: Epidemiology of smallpox in West Pakistan. II. Determinants of intravillage spread other than acquired immunity.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D010154:Pakistan; D012621:Seasons; D012899:Smallpox / Q000453:epidemiology* / Q000276:immunology / Q000517:prevention & control; D012900:Smallpox Vaccine; D013997:Time Factors; D014195:Travel; D014611:Vaccination
chemical_list: D012900:Smallpox Vaccine