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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 human immunodeficiency virus (HIV) [8] [9] [10] is a retrovirus [11] that attacks the immune system.It is a preventable disease. [5] It can be managed with treatment and become a manageable chronic health condition. [5]
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]
As of 2021, the prevalence rate among adults ages 15–49 was 1.2% with 14 000 new HIV cases presenting in both adults and children which is a 28% decrease from 2010. [35] [73] HIV transmission occurs largely through heterosexual intercourse. A greater number of people who get infected with HIV/AIDS are heterosexuals.
Lentivirus is a genus of retroviruses that cause chronic and deadly diseases characterized by long incubation periods, in humans and other mammalian species. [2] The genus includes the human immunodeficiency virus (HIV), which causes AIDS.
Tennessee held onto No. 1 in the AP Top 25 for the second consecutive week, though No. 2 Auburn closed the gap as the top five remained unchanged in the men's college basketball poll Monday. The ...
Poison Profits. A HuffPost / WNYC investigation into lead contamination in New York City
The first identification of HIV-2 occurred in 1985 in Senegal by microbiologist Souleymane Mboup and his collaborators. [28] The first case in the United States was in 1987. [29] The first confirmed case of HIV-2 was a Portuguese man who was treated at the London Hospital for Tropical Diseases and later died in 1987.