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HIV-associated neurocognitive disorders (HAND) are neurological disorders associated with HIV infection and AIDS. It is a syndrome of progressive deterioration of memory, cognition, behavior, and motor function in HIV-infected individuals during the late stages of the disease, when immunodeficiency is severe. [1]
A woman demonstrates the use of the OraQuick rapid HIV test. Blood being taken for HIV rapid test. Rapid antibody tests are qualitative immunoassays intended for use in point-of-care testing to aid in the diagnosis of HIV infection. These tests should be used in conjunction with the clinical status, history, and risk factors of the person being ...
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]
People in lesser developed regions like the Sub-Saharan Africa are adversely affected by HIV/AIDS and have very limited access to clinical labs or hospitals. There have been estimates which have indicated that there are about 22.5 million people with HIV/AIDS in such regions and hence there is a high demand for portable blood test devices . [ 6 ]
In the central nervous system, the most common AIDS-defining condition is toxoplasmosis. Caused by the parasite Toxoplasma gondii, toxoplasmosis in HIV-infected patients mainly presents as encephalitis, or inflammation of the brain, but can take other forms as well, such as inflammation of the retinas or lungs.
It progresses rapidly, usually causing death within months of diagnosis. [25] HIV-associated dementia (HAD) is a metabolic encephalopathy induced by HIV infection and fueled by immune activation of HIV-infected brain macrophages and microglia. These cells are productively infected by HIV and secrete neurotoxins of both host and viral origin. [26]
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