Title: hemariya (4) - PowerPoint PPT Presentation

Description: HIV – human immunodeficiency virus – is a virus that attacks cells in the immune system that help fight infection and illness. Only humans can be infected or contracted by the virus. The virus destroys the T-helper cell and makes copies of itself inside them. This gradually reduces a person’s immune system, which means that someone who has HIV and not on antiretroviral treatment will increasingly find it difficult to fight against infections. The rate at which HIV progresses in a person depends on age, medical history, health, and background. – PowerPoint PPT presentation