What causes h. i.v to happen exactly?

HIV infection is caused by the human immunodeficiency virus. You can get HIV from contact with infected blood, semen, or vaginal fluids. Most people get the virus by having unprotected sex with someone who has HIV. Another common way of getting it is by sharing drug needles with someone who is infected with HIV.

-unprotected intercourse
-piercing and other procedures with unclean needles
-childbirth or breast-feeding oralyk and sharps injuries

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