Role of acquired immunity to T. pallidum in the control of syphilis.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D003140:Communicable Disease Control; D006306:Health Surveys; D006801:Humans; D007109:Immunity; D007110:Immunity, Active; D008297:Male; D013587:Syphilis / Q000453:epidemiology / Q000276:immunology* / Q000517:prevention & control*; D013588:Syphilis Serodiagnosis; D014210:Treponema pallidum / Q000276:immunology; D014211:Treponemal Infections / Q000276:immunology; D014481:United States; D014768:Virginia; D044465:White People