HIV-1 has evolved multiple mechanisms to elude immune control. The view of virus as
classifiable into distinct subtypes needs to reflect the reality of the constant emergence of …

Background Our intention was to compare the rate of immunological progression prior to
antiretroviral therapy (ART) and the virological response to ART in patients infected with …

During the rapid spread of HIV-1 in humans, the main (M) group of HIV-1 has evolved into
ten distinct subtypes, undergone countless recombination events and diversified …

Genetic differences among HIV-1 variants can influence the virus biological properties,
susceptibility to existing and candidate antiretroviral drugs, and evolution of antiretroviral …

HIV-1 infection is characterized by genetic diversity wherein distinct viral subtypes (clades A,
B, C, D, E, F, G, K and O) are expanding in different geographical regions. This article deals …

HIV-1 genetic variability within individuals and populations plays a central role in the HIV
pandemic. Multiple zoonotic transmissions of SIV to humans have resulted in distinct HIV …

Human immunodeficiency virus type 1 (HIV-1) is the causative agent of AIDS (10, 38, 105,
114). It is characterized by extensive and dynamic genetic diversity, generating variants …

The virulence properties of human immunodeficiency virus type 2 (HIV-2) are known to vary
significantly and to range from relative attenuation in certain individuals to high-level …

Since the first descriptions of HIV/AIDS, HIV-1 has emerged as the most significant pathogen
worldwide, with approaching 60 million infections to the end of 2000. Over 18 million deaths …

Background: HIV-1 evolves by rapid mutation and by recombination, both processes actively
contributing to its genetic diversity. Most of the multiple genetic subtypes and intersubtype …