Thelansis

 Human Immunodeficiency Virus type 1 (HIV-1) is a retrovirus that infects humans and is the primary cause of acquired immunodeficiency syndrome (AIDS). It belongs to the Lentivirus genus of the Retroviridae family. HIV-1 is one of the two major types of HIV, the other being HIV-2. HIV-1 is transmitted by exchanging body fluids, including blood, semen, vaginal fluids, rectal fluids, and breast milk. The most common transmission routes include unprotected sexual contact with an infected person, sharing needles or syringes with an infected person, and transmission from an infected mother to her child during childbirth or breastfeeding. Once the virus enters the body, it primarily targets and infects CD4+ T cells, a type of white blood cell crucial for the immune system's proper functioning. As the virus replicates, it progressively destroys these CD4+ T cells, weakening the immune system and making the person more susceptible to opportunistic infections and certain cancers. The course...