“…12 Since 2003, the establishment and scale-up of the ''Four Free and One Care''[free ARV drugs, free prevention of motherto-child transmission, free voluntary counseling and testing (VCT), free schooling for children orphaned by AIDS, and care to people living with HIV/AIDS] policy 13,14 in China has been the major strategy to facilitate HIV diagnosis and treatment of infected individuals and contain HIV transmission among key populations such as FSW, PWID, former illegal plasma donors, and MSM. 15,16 Free HIV testing is available at Centers for Disease Control and Prevention (CDC) VCT clinics at provincial, city/ prefectural and district/country levels across the country, and free ART is available to HIV-infected individuals with CD4 count <500 cells/lL. 10 For those not on ART, they are eligible to receive one free CD4 and HIV viral load test each year, but patients have to pay for additional tests.…”