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KAIS 2007 1 - Kenya National AIDS & STI Control Programme ...

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3.3 SEXFigure 3.3a HIV prevalence among women and men aged 15-49 years, 2003 KDHS and <strong>2007</strong><strong>KAIS</strong>.1210KDHS 2003<strong>KAIS</strong> <strong>2007</strong>8.78.8HIV Prevalence (Weighted %)8644.65.56.77.420Women Men TotalSexFigure 3.3a. HIV prevalence was not significantly different in 2003 and <strong>2007</strong>.The <strong>2007</strong> <strong>KAIS</strong> estimate of national HIV prevalence for adults aged 15‐49 years was 7.4% (95% CI: 6.7%‐ 8.1%). The 2003 KDHS estimated that 6.7% (95% CI: 5.8% ‐ 7.6%) of adults in this age group wereinfected with HIV. The <strong>2007</strong> <strong>KAIS</strong> national prevalence was not significantly higher than the 2003KDHS national prevalence. The overlapping confidence intervals indicate that HIV prevalenceremained more or less stable between 2003 and <strong>2007</strong>. In the 2003 KDHS, 8.7% of women and 4.6% ofmen were infected compared to 8.8% of women and 5.5% of men in the <strong>2007</strong> <strong>KAIS</strong>.DATA IN CONTEXTHIV Serologic Testing in 2003 KDHS and <strong>2007</strong> <strong>KAIS</strong>In the <strong>2007</strong> <strong>KAIS</strong>, HIV testing was performed using antibody/antigen assays, compared toantibody-only assays in the 2003 KDHS. The antibody/antigen approach is more sensitive forcapturing recent infections and was utilized in <strong>KAIS</strong> for consistency with Government of <strong>Kenya</strong>HIV testing programs at the time of the survey. Differences between these assays are small inpopulations with relatively low incidence such as <strong>Kenya</strong>, which had an estimated HIVincidence of 0.83% (95% CI: 0.80% and 0.85%) in <strong>2007</strong>, according to GOK estimates using3.4 UN<strong>AIDS</strong> AGE Estimation GROUP and AND Projection SEX Package (EPP)/Spectrum software. Point estimatescalculated from results of the two testing approaches may differ but are likely to fall withinsimilar 95% confidence intervals.<strong>KAIS</strong> <strong>2007</strong> 54

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