title: Results of a virological study of smallpox convalescents and contacts: short communication.
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D002642:Chick Embryo; D002648:Child; D002675:Child, Preschool; D003289:Convalescence; D046508:Culture Techniques; D005321:Extraembryonic Membranes; D006760:Hospitalization; D006801:Humans; D007223:Infant; D009305:Nasopharynx / Q000382:microbiology; D010154:Pakistan; D012899:Smallpox / Q000382:microbiology*; D013997:Time Factors; D014556:Urine / Q000382:microbiology; D012901:Variola virus / Q000302:isolation & purification*; D014776:Virus Cultivation