Letter: Vaccination of smallpox contacts.
D006801:Humans; D012899:Smallpox / Q000517:prevention & control*; D012900:Smallpox Vaccine / Q000008:administration & dosage*; D013882:Thiosemicarbazones / Q000627:therapeutic use; D005719:gamma-Globulins / Q000627:therapeutic use
D012900:Smallpox Vaccine; D013882:Thiosemicarbazones; D005719:gamma-Globulins