Abstract:Objective To investigate the characteristics of population with HIV/AIDS voluntary counseling and testing (VCT) and the status of HIV infection in Jiangyin City, and to provide a basis for developing HIV/AIDS targeted prevention and control measures. Methods All data of outpatients with HIV/AIDS voluntary counseling and testing in Jiangyin City during 2014-2016 were collected and analyzed. Results A total of 4,702 outpatients received VCT service from 2014 to 2016, and most of them had non-marital heterosexual sex, accounting for 55.21%. The proportion of outpatients with history of commercial heterosexual sex behavior showed an upward tendency year by year (χ2tendency=21.46, P<0.001), while the proportions of injection drug users (χ2tendency=15.89, P<0.001) and HIV-positive spouse/fixed sexual partner (χ2tendency=8.26, P=0.016) showed a downward tendency year by year. The positive rates of HIV and syphilis were 1.83% and 6.59% respectively, and the positive rate of HIV-syphilis co-infection was 0.68%. During the 3-year period, the positive rate of HIV decreased year by year, while the positive rate of syphilis increased year by year, without statistically significant difference in the trend (χ2tendency=0.49, P=0.783;χ2tendency=1.40, P=0.497). The positive rate of HIV was found to be higher in male outpatients (χ2=44.41, P<0.001), divorced or widowed outpatients (χ2=12.49, P=0.002), outpatients with college degree or above (χ2=45.11, P<0.001) and syphilis-positive outpatients (χ2=133.34,P<0.001). The positive rate of HIV was found to be the highest in men who have sex with men (MSM) (18.79%) followed by outpatients with HIV-positive spouse/fixed sexual partner (5.43%). The positive rates of HIV in MSM in 2014, 2015 and 2016 were 25.25%, 18.58% and 14.18% respectively, showing a gradually decreasing tendency (χ2tendency = 4.51, P=0.105). The positive rates of HIV in outpatients with HIV-positive spouse/fixed sexual partner were 3.51%, 5.26% and 8.82% respectively, showing a gradually increasing tendency (χ2tendency=1.11, P=0.573). But no statistically significant difference was found in either tendency. Conclusions Most of VCT clients in Jiangyin City during 2014-2016 were the young and middle-aged, the males and the married. VCT is an effective way to detect HIV-infected persons in time. It is necessary to strengthen HIV/AIDS detection and intervention in MSM and population with HIV-positive spouse/fixed sexual partner in future.