title: Endemic smallpox in rural East Pakistan. I. Methodology, clinical and epidemiologic characteristics of cases, and intervillage transmission.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003140:Communicable Disease Control; D004196:Disease Outbreaks; D004197:Disease Reservoirs; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010154:Pakistan; D011156:Population Density; D011159:Population Surveillance; D012111:Residence Characteristics; D012424:Rural Population; D012621:Seasons; D012899:Smallpox / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality / Q000517:prevention & control; D014171:Transients and Migrants; D014611:Vaccination