Population size estimates of MSM, FSW and IDU using literature and demographic data, Nairobi, November 2010
| Population | Denominator | N (a) | Source of denominator | Estimate of prevalence in population* (b), % | Source of prevalence estimate | Estimate a*b |
|---|---|---|---|---|---|---|
| MSM | Men 18+ | 1 133 998 | 2009 Nairobi Census | 1.2 | Caceres et al (2008) | 13608 |
| FSW | Women 18+ | 1 053 368 | 2009 Nairobi Census | 2.8 | Vandepitte et al (2006) | 29494 |
| IDU | Adults 18+ | 2 187 366 | 2009 Nairobi Census | 0.3 | Aceijas et al (2006) | 6562 |
*Of adult men for MSM, of adult women for FSW and of all adults for IDU.
FSW, female sex workers; IDU, intravenous drug users; MSM, men who have sex with men.