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Without treatment, the average survival time after infection with HIV is estimated to be 9 to 11 years, depending on the HIV subtype. [4] In most cases, HIV is a sexually transmitted infection and occurs by contact with or transfer of blood, pre-ejaculate, semen, and vaginal fluids.
HIV is spread primarily by unprotected sex (including anal and vaginal sex), contaminated hypodermic needles or blood transfusions, and from mother to child during pregnancy, delivery, or breastfeeding. [18] Some bodily fluids, such as saliva, sweat, and tears, do not transmit the virus. [19] Oral sex has little risk of transmitting the virus. [20]
HIV is commonly transmitted via unprotected sexual activity, blood transfusions, hypodermic needles, and from mother to child. Upon acquisition of the virus, the virus replicates inside and kills T helper cells , which are required for almost all adaptive immune responses .
HIV is spread primarily by unprotected sex (including anal, and oral sex), contaminated blood transfusions, and hypodermic needles. It can also be spread from mother to child during pregnancy, delivery, or breastfeeding. [6] Some bodily fluids, such as saliva and tears, do not transmit HIV. [7]
The campaign seeks to spread the scientific evidence that undetectable means untransmittable. Since the beginning of the epidemic, perceptions and management of HIV infection have gone through many stages; from assuming the infectiousness, then discovering the routes of transmission (blood, sexual fluids, and breastfeeding), to prevention methods (education, condoms, PrEP, and PEP) and various ...
And, because HIV-positive people with durably suppressed or undetectable amounts of HIV in their blood cannot transmit HIV to sexual partners, sexual activity with HIV-positive partners on effective treatment is a form of safe sex (to prevent HIV infection). This fact has given rise to the concept of "U=U" ("Undetectable = Untransmittable").
HIV is carried in body fluids and is spread by sexual activity. It can also be spread by contact with infected blood, breastfeeding, childbirth, and from mother to child during pregnancy. [73] When HIV is at its most advanced stage, an individual is said to have AIDS (acquired immunodeficiency syndrome). [74]
HIV-1 is the more commonly associated with AIDS in the US and worldwide, HIV-2 is more rare, and typically restricted to areas in western Africa and southern Asia. HIV-2 is so uncommon that “HIV” almost always refers to HIV-1. Alright HIV targets CD4+ cells, meaning cells that have this specific molecule called CD4 on their membrane.