ABSTRACT
Introduction: Previous sentinel surveys of HIV in Nigeria studied pregnant women attending antenatal care; thereby omitting other important high-risk groups. We therefore investigated the prevalence of HIV/AIDS in low- and high-risk populations in the state of Plateau; Nigeria. Methodology: Blood samples were collected by venepuncture from 5;021 adults aged ?15 years between August and October 2008. At least one major town and one rural community were selected in each Local Government Area (LGA). Samples were initially screened with a rapid HIV testing kit; reactive samples were further tested using Stat Pak. Discordant samples were confirmed using Genie-II. Results: Of 5;021 subjects screened; 245 (4.88) were seropositive. Local Government prevalence ranged from 0.68 in Bassa to 16.07 in Jos North. On average; LGAs in the Southern Senatorial Zone had higher rates. Most (over 80) positive cases were younger than 40 years. Females had a significantly higher (6.85) prevalence than males (2.72). Age-specific prevalence was higher among females aged 25 to 29 years (2.09). Risk factors identified for acquisition of HIV infection were previous history of STDs (6; 16.28); men having sex with men (2; 11.76); having multiple sexual partners (97; 10.49); intravenous drug use (10; 7.58); sharing of sharp objects (20; 4.82); and history of blood transfusion (21; 3.65). Conclusion: The seemingly higher prevalence recorded in this survey could be attributed to the inclusion of high- and low-risk groups in the general population; unlike previous reports which studied only antenatal care attendees. This survey provides useful baseline information for further studies