BACKGROUND: HIV-negative men are over-represented in tuberculosis (TB) prevalence surveys. Traditionally, TB screening is focused in clinics. We aimed to determine the frequency of primary healthcare clinic (PHC) attendance among HIV-negative men in a TB-prevalent setting. METHODS: Since January 2017, PHC attendees in a rural South African demographic surveillance area (DSA) were asked their reason for attendance. HIV status was defined as positive if tested positive in a DSA sero-survey or attended clinic for HIV care; negative if tested negative between January 2014-December 2017 and no HIV-related visits; and HIV-unknown otherwise. RESULTS: Among 67124 DSA residents (=15 years), 27038 (40%) were male; 14196 (21%) were classified HIV-positive, 18892 (28%) HIV-negative and 34036 (51%) HIV-unknown. Between April 2017 and March 2018, 24382/67124 (36.3%, 95% confidence interval [CI] 36.0-36.7) adults made =1 PHC visit, comprising 9805/40086 (24.5%, 95%CI 23.6-25.3) of HIV-negative or unknown women and 3440/27038 (12.7%, 95%CI 11.6-13.8) of HIV-negative or unknown men. Overall, HIV care accounted for 37556/88109 (43.6%) of adult PHC visits. CONCLUSION: In this rural population, HIV-negative and -unknown men rarely attend PHCs. Improving TB screening in clinics may not reach a key population with respect to undiagnosed TB. Additional strategies are needed to diagnose and treat TB earlier.

Tuberculosis, Adults, Rural population, Africa, Mass screening, Primary Health Care, Tuberculosis case finding, HIV infection