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HIV is the cause of the spectrum of disease known as HIV/AIDS. HIV is a retrovirus that primarily infects components of the human immune system such as CD4 + T cells, macrophages and dendritic cells. It directly and indirectly destroys CD4 + T cells. [88]
HIV/AIDS research includes all medical research that attempts to prevent, treat, or cure HIV/AIDS, as well as fundamental research about the nature of HIV as an infectious agent and AIDS as the disease caused by HIV. Many governments and research institutions participate in HIV/AIDS research.
In 1993, the CDC added pulmonary tuberculosis, recurrent pneumonia and invasive cervical cancer [2] to the list of clinical conditions in the AIDS surveillance case definition published in 1987 [3] and expanded the AIDS surveillance case definition to include all HIV-infected persons with CD4+ T-lymphocyte counts of fewer than 200 cells/μL or ...
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]
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 CDC Classification System for HIV Infection is the medical classification system used by the United States Centers for Disease Control and Prevention (CDC) to classify HIV disease and infection. [1] The system is used to allow the government to handle epidemic statistics and define who receives US government assistance.
PORTLAND, Ore. (AP) — More than 2,400 patients at hospitals around Portland, Oregon, may have been exposed to infectious diseases such as hepatitis B and C, as well as HIV, because of an ...
There are also increased rates of HIV associated non-AIDS conditions (HANA) such as heart disease, liver disease and dementia that are multifactorial complications from HIV, associated behaviors, coinfections like hepatitis B, hepatitis C, and human papilloma virus (HPV) as well as HIV treatment.