Human immunodeficiency virus type 1 (HIV-1) sequences that pre-date the recognition of
AIDS are critical to defining the time of origin and the timescale of virus evolution,. A viral …

AIDS, a new disease, was first recogzed in 1981, clustered in male homosexuals,
intravenous drug abusers, and hemophiliacs in the United States and among sexually active …

The acquired immunodeficiency syndrome (AIDS) and infection with the human
immunodeficiency virus type 1 (HIV-1) constitute a worldwide public health problem …

The origin of human immunodeficiency virus type 1 (HIV-1) is controversial. We show here
that viruses obtained from the Democratic Republic of Congo in Africa have a quantitatively …

There has been considerable uncertainty in estimates of past and current human
immunodeficiency virus (HIV) infection rates in the United States. Statistical estimates of …

Simple mathematical models of the transmission dynamics of HIV that incorporate
demographic and epidemiological processes to assess the potential impact of AIDS on …

Many questions have been posed about acquired immunodeficiency syndrome (AIDS)
pathogenesis. Is human immunodeficiency virus (HIV) both necessary and sufficient to …

We discovered a highly virulent variant of subtype-B HIV-1 in the Netherlands. One hundred
nine individuals with this variant had a 0.54 to 0.74 log10 increase (ie, a~ 3.5-fold to 5.5-fold …

HIV-1 sequences were analyzed to estimate the timing of the ancestral sequence of the
main group of HIV-1, the strains responsible for the AIDS pandemic. Using parallel …

The human immunodeficiency virus (HIV) pandemic continues to grow at an alarming rate,
with a further 5 million new infections in 2003. Some 3.5 million of these were in sub …