The PHS collaborated with local doctors and nurses to recruit roughly 400 Black men presumed to have noncontagious late-stage syphilis, as well as 200 non-syphilitic Black men for their control group.
El PHS colaboró con doctores y enfermeras locales para reclutar a 400 hombres negros con sífilis terminal no contagiosa y a 200 hombres negros sin sífilis como grupo de control.