CD4 and sexually transmitted disease: Three hundred forty (73.1%) participants were infected by homosexual contact, 78.9% of the respondents were diagnosed with HIV more than 12 months before the time of data collection, 320 (69.1%) of respondents had a CD4 level lower than 500, most of the respondents (67.7%) had been on HAART for longer than 12 months and approximately 14.0% of the participants had complications of other STDs The characteristics of HIV/AIDS infection of the PLWHA are shown in Table 2.