Objective To observe the prevalence and characteristics of the HIV genotypic drug resistance and subtypes in HIV-1 infected patients failing in antiviral therapy.Methods Plasma samples with virus loads of not less than1 000 copies/ml were collected from HIV-1-infected patients after antiviral therapy in Jilin City in 2014 ~ 2015,from which viral RNA was extracted for amplification and sequencing of POL genetic region.The resistant mutations were determined by Stanford HIV Drug Resistance Database,while the ...