Though they were initially created to track people with sexually transmitted diseases in order to quickly identify chains of infection, the lists focused mainly on homosexuals, sex workers and other persons deemed by the prudish Soviet authorities to be leading “an immoral lifestyle”.
Soviet health ministries resorted to such lists and statistics on more than one occasion, finding them a very effective tool to combat the epidemics of syphilis and gonorrhoea that broke out in the early 1960s.