HIV is a lifelong infection that affects many people. People with HIV take many different types of medicines to help control their condition and to prevent the infection from developing into AIDS.

However, in one of its first important findings, tree-building soon revealed two different types of HIV, now regarded as separate species. The first (particularly infective and virulent) type ...

People with HIV may have to take multiple medicines just to keep the virus under control. Medicines for HIV are usually taken every day, and it is crucial that people do not miss their dose or else ...

Since it was first identified in 1983, HIV has infected more than 85 million people and caused some 40 million deaths worldwide. While medication known as pre-exposure prophylaxis, or PrEP, can ...