World AIDS Day is observed across the world every year on 1 December to raise awareness about the HIV/AIDS. On this day, India hosts nationwide awareness campaigns and community outreach programmes.

2 to 4 Weeks After Exposure 3 to 4 Weeks After Exposure 4 Weeks After Exposure Later-Stage HIV and AIDS Human immunodeficiency virus (HIV) infection is a progressive disease, meaning that it typically ...

The acute phase of HIV infection encompasses the interval immediately following viral acquisition, characterised by rapid viral replication, high plasma viraemia and the absence of a mature antibody ...

In 1981, physicians in Los Angeles reported five young patients with Pneumocystis pneumonia, a rare lung infection later recognized as the first sign of HIV infection and a defining illness of AIDS.