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how is aids transmitted

HIV/AIDS - Wikipedia, the free encyclopedia


** HIV/AIDS **

From Wikipedia, the free encyclopedia
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This is a good article. Click here for more information.
This article is about the disease. For the virus, see HIV. For other uses,
see AIDS (disambiguation).
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/Classification and external resources/
A red ribbon in the shape of a bow
The red ribbon is a symbol for solidarity with HIV-positive people and
those living with AIDS.
ICD-10 B20 – B24
ICD-9 042-044
OMIM 609423
DiseasesDB 5938
MedlinePlus 000594
eMedicine emerg/253
MeSH D000163

*Human immunodeficiency virus infection* / *acquired immunodeficiency
syndrome* (*HIV/AIDS*) is a disease of the human immune system caused by
infection with human immunodeficiency virus (HIV).^[1] During the initial
infection, a person may experience a brief period of influenza-like
illness. This is typically followed by a prolonged period without symptoms.
As the illness progresses, it interferes more and more with the immune
system, making the person much more likely to get infections, including
opportunistic infections and tumors that do not usually affect people who
have working immune systems.

HIV is transmitted primarily via unprotected sexual intercourse (including
anal and even oral sex), contaminated blood transfusions, hypodermic
needles, and from mother to child during pregnancy, delivery, or
breastfeeding.^[2] Some bodily fluids, such as saliva and tears, do not
transmit HIV.^[3] Prevention of HIV infection, primarily through safe sex
and needle-exchange programs, is a key strategy to control the spread of
the disease. There is no cure or vaccine; however, antiretroviral treatment
can slow the course of the disease and may lead to a near-normal life
expectancy. While antiretroviral treatment reduces the risk of death and
complications from the disease, these medications are expensive and may be
associated with side effects.

Genetic research indicates that HIV


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