Harvard Health Blog

PrEP: Protection against HIV in a pill?

By: Meera Sunder, MBBS, MRCOG, Contributing Editor HIV (the human immunodeficiency virus) weakens the human immune system and destroys the important cells that fight disease and infection. A person can get HIV when bodily fluids including blood, semen, pre-seminal fluid, rectal fluids, or vaginal fluids of a person with the virus come in contact with a mucous membrane or damaged tissue. HIV can be transmitted through breast milk, or when a contaminated…

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