With a presence in 19 provinces in Indonesia, this sex worker-led network provides HIV and other health services to sex workers through drop-in centres, outreach, and referrals. OPSI builds partnerships with government, service providers and HIV organisations to improve sex workers’ access to HIV and STI prevention, treatment and care services. With this grant, OPSI plans to study the impact on sex workers of brothel closures in six major Indonesian cities, and the connection between human rights violations and HIV/STI vulnerability. OPSI will use the results of this research in its advocacy work.