|Medical||HIV||Human Immunodeficiency Virus|
Human Immunodeficiency Virus (HIV) is a lentivirus that causes HIV infection and over time acquired immunodeficiency syndrome (AIDS). AIDS is a condition in humans in which progressive failure of the immune system. HIV infection occur by the transfer of infected HIV blood, pre-ejaculate, semen, vaginal fluids or breast milk. Within these bodily fluids, HIV is present as both free virus particles and virus within infected immune cells.
Without treatment, average survival time after infection with HIV is estimated to be 9 to 11 years, depending on the HIV subtype.