If left untreated, human immunodeficiency virus (HIV) almost always will progress to AIDS, even after many years. The immune defenses become compromised and the body is less able to defend itself ...

Human immunodeficiency virus (HIV) is a germ that causes a lifelong infection that slowly weakens the immune system. Though the infection is lifelong, medicines can keep the virus in check and help ...

Left: Structure of the Human Immunodeficiency Virus (HIV). Note the envelope protein that protects the virus against immunological detection and the small genome consisting of two short strands of RNA ...