An increasing trend of prevalence of any PDR-associated mutations was observed in CRF07_BC and CRF55_01B from 9.50% and 6.80% in 2017 to 20.5% and 20.0% in 2021, respectively ( Table 1 ).
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Prevalence and transmission of pretreatment drug resistance in people living with HIV-1 in Shanghai China, 2017-2021.
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