Population size estimation of female sex workers, men who have sex with men, and people who inject drugs, in Sierra Leone

National HIV/AIDS Secretariat of Sierra Leone

This population size estimation (PSE) was undertaken in order to inform HIV prevention programming for key populations in the fight against HIV in Sierra Leone. This PSE focused on female sex workers (FSWs), men who have sex with men (MSM) and people who inject drugs (PWID) because these groups are typically the first and hardest affected by HIV.