Blood donors with positive reactions to serologic tests for syphilis after recent successful smallpox vaccinations.
D001782:Blood Donors / Q000097:blood*; D006801:Humans; D012698:Serologic Tests; D012899:Smallpox / Q000276:immunology*; D013587:Syphilis / Q000175:diagnosis*; D014611:Vaccination
BLOOD DONORS/blood; SMALLPOX/immunology; SYPHILIS/diagnosis