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HIV-1B: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype B is most prevalent in Thailand, Australia, Japan, Europe and America. This subtype tends to be transmitted mainly by homosexual contact and intravenous drug use i.e. infection occurs mainly through blood exposure. More detailed information about the symptoms, causes, and treatments of HIV-1B is available below.
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Prognosis for HIV-1B: Death usually occurs between 6 and 19 months after diagnosis of AIDS if not treatment is utilized. Strict adherence to treatment plans (usually antiretroviral medications) can significantly improve long-term outcomes. A number of people will develop a resistance to treatment therapies if they have been on them for more than two decades.
More about prognosis of HIV-1B
Types of HIV-1B
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