[Drug resistance among recent HIV-1 infected men who have sex with men in Chongqing municipality of China].

Objective: To evaluate the situation of HIV prevalence, incidence and drug resistance (DR) among recent HIV infected men who have sex with men(MSM) during the year of 2006.

Methods: A transect investigation was conducted through snowballing to recruite volunteers. HIV infected status was confirmed by ELISA and Western Blot (WB), the recent infected within 155 days were confirmed by BED-Capture ELISA Assay (BED-CEIA), which based on the principle that characteristics of the initial HIV antibody response in recent infections differs from those of established or long-term infections either by antibody titer, proportion, specificity, isotype or avidity.