HIV/AIDS: Introduction

HIV/AIDS: Introduction

HIV is the acronym for the human immunodeficiency virus. HIV is virus that causes the incurable acquired immunodeficiency syndrome (AIDS). Over time, HIV destroys the helper T cells of the body's immune system, resulting in a critical deterioration of the immune system and the ability of the body to fight infection.

HIV is most often a sexually transmitted virus. It is passed from one person another during sexual contact that involves vaginal, oral, or anal sex. HIV can also be passed to another person through other means, such as through contact with blood or body fluids. This can occur through such processes as blood transfusions or sharing needles contaminated with HIV. HIV can also be passed from an infected mother to her baby during pregnancy, childbirth or breastfeeding.

Early infection with HIV often produces no symptoms. When there are symptoms, they can include flu-like symptoms that occur about four to eight weeks after infection. These symptoms generally go away within several weeks. There then may be no symptoms for months to years. The most serious complication of HIV infection is AIDS. For more details on complications and symptoms, refer to symptoms of HIV.

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