Objective: To investigate the origin and to reconstruct the onset date of the HIV-1 subtype C
epidemic in Brazil. Design: Three independent datasets of subtype C sequences isolated …

The reconstruction of the epidemic history of several HIV populations, by using methods that
infer the population history from sampled gene sequence data, has revealed important …

Background: There are few surveillance studies analyzing genotypes or primary
(transmitted) drug resistance in HIV-infected blood donors in Brazil. The aim of this study …

Abstract Background Although HIV-1 CRF12_BF and CRF38_BF are two epidemiologically
important recombinant lineages circulating in Argentina and Uruguay, little is known about …

BACKGROUND: Primary resistance represents a challenge for the control of HIV-1 because
it can reduce the efficacy of first line antiretroviral therapy and may impact clinical outcomes …

HIV-1 B is predominant in Brazil, but HIV-1 C has increasingly been reported in the south of
the country. However, many samples clustering with clade C are actually a recombinant …

We describe preliminary molecular characterization of HIV-1 pol from 108 consecutive HIV
seropositive users of a Voluntary Counseling and Testing (VCT) site of Porto Alegre city, the …

Few reports have described the molecular characteristics of the AIDS epidemic within the
interior regions of Brazil, a country of continental dimensions. To help fill this gap, the …

Background Genetic variability is a major feature of human immunodeficiency virus type 1
(HIV-1) and is considered the key factor frustrating efforts to halt the HIV epidemic. A proper …

Few studies have reported the molecular epidemiological characterization of HIV-1 in the
Northern region of Brazil. The present study reports the molecular and epidemiological …