Trends in Antiretroviral Drug Resistance and Clade Distributions Among HIV-1--Infected Blood Donors in Sao Paulo, Brazil

Abstract

The prevalence of drug-resistant mutations among newly diagnosed persons in São Paulo city is low and similar to what has been described in Europe and the United States. Although HIV-1 subtype B remains predominant, subtypes F and C and recombinant forms are present in substantial proportions in infected donors.