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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-SGD is more prevalent in HIV positive children than HIV positive adults, [4] at about 19% and 1% respectively. [1] Unlike other oral manifestations of HIV/AIDS such as Kaposi sarcoma, oral hairy leukoplakia and oral candidiasis, which decreased following the introduction of highly active antiretroviral therapy (HAART), HIV-SGD has increased.
HIV-1 is more virulent and more infective than HIV-2, [20] and is the cause of the majority of HIV infections globally. The lower infectivity of HIV-2, compared to HIV-1, implies that fewer of those exposed to HIV-2 will be infected per exposure. Due to its relatively poor capacity for transmission, HIV-2 is largely confined to West Africa. [21]
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.
The only way that HIV can be transmitted from one individual to the next is by sharing of certain bodily fluids such as semen, blood, and vaginal discharge which the virus uses as a medium to enter the bloodstream of the recipient; HIV is not transmissible via fluids such as saliva, sweat, tears, or urine as it is not in high enough ...
Figure 1. Early Symptoms of HIV. The stages of HIV infection are acute infection (also known as primary infection), latency, and AIDS. Acute infection lasts for several weeks and may include symptoms such as fever, swollen lymph nodes, inflammation of the throat, rash, muscle pain, malaise, and mouth and esophageal sores. The latency stage ...
A German man has probably been cured of HIV, a medical milestone achieved by only six other people in the more than 40 years since the AIDS epidemic began.
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]