Describing the HIV/AIDS
Human immunodeficiency virus (HIV) belongs to the group of retroviruses and carries ribonucleic acid (RNA) as genetic material. HIV infection occurs when the virus enters CD4+ T-cells of the host and causes the host cell to replicate viral RNA and proteins, which in turn invade the other host cells. HIV infection may be divided onto four stages depending on the clinical history, physical examination, status of immune dysfunction, signs and symptoms and infections/malignancies. The first stage or the primary infection is characterized by acute HIV syndrome with a dramatic drop in CH4+ T-cells (500 to 1500 cells/mm3). The second stage ...
