title: Serial isolation of variola virus in the throat of household contacts of smallpox cases.
mesh_terms: D000328:Adult; D002353:Carrier State / Q000382:microbiology*; D006801:Humans; D008297:Male; D010614:Pharynx / Q000382:microbiology*; D012899:Smallpox / Q000382:microbiology*; D012901:Variola virus / Q000302:isolation & purification*