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Nigeria contributes a high fraction to the global burden of HIV infections. Post-exposure prophylaxis (PEP) is a proven strategy to prevent transmission of the virus. The aim of this study was to determine the clinical outcomes of PEP in Nigeria at four clinics funded by United States President's Emergency Plan for AIDS Relief and AIDS Prevention Initiative in Nigeria (PEPFAR-APIN): Ahmadu Bello University Teaching Hospital (ABUTH), Jos University Teaching Hospital (JUTH), University of Maiduguri Teaching Hospital (UMTH) and University College Hospital (UCH). Methods:  This study adopted a multisite retrospective design using the site's databases (2006-2016). Retrieved data was exported into SPSS version 25 for statistical analysis. Outcomes were measured as a proportion of HIV infections averted after PEP. Frequencies and percentages were used to describe the findings, while binary logistic regression was used to determine the sociodemographic predictors of clinical outcomes. Results:  The average age of the 575 PEP patients whose data were retrieved was 30.45 (SD ±9.50 years), with 344 (59.8%) being females. Out of 545 patients,157 (28.8%) indicated their job status as students. Out of 273 patients, 198 (72.5%) reported their exposure type was non-occupational. The HIV status of 129 (22.4%) patients was negative after completing PEP. Prescribed regimen (β = -0.048, 95% CI -0.095 to -0.001,  p  = 0.045) and type of exposure (β = 0.351, 95% CI 0.042-0.660,  p  = 0.027) were predictors of post-PEP HIV status in JUTH and ABUTH respectively. Conclusion:  There was a high rate of lost-to-follow-up among the PEP patients, but the incidence of seroconversion was low in those who were tested after PEP. The right choice of regimen and presenting with non-occupational exposure affected the outcome of the service.

african journal of aids research

HIV infections averted at PEPFAR-APIN clinics in Nigeria: a ten-year retrospective evaluation of the clinical outcomes of post-exposure prophylaxis services