Acquired Immunodeficiency Syindrome or Acquired Immune Deficiency Syndrome (AIDS abbreviated) is a collection of symptoms and infections (or: syndrome) is caused by damage to the human immune system caused by HIV infection, or infection of other viruses that attack similar to other species (SIV, FIV, etc.).The virus called Human Immunodeficiency Virus (HIV for short), a virus that weakens the immunity of the human body. People who are exposed to the virus will become vulnerable to opportunistic infections or tumors susceptible. Although there has been handling can slow the spread of the virus, but the disease is not completely curable.
HIV and the virus-like viruses are generally transmitted by direct contact between the skin layers (mucous membrane) or the bloodstream with a bodily fluid containing HIV, such as blood, semen, vaginal fluids, preseminal fluid, and breast milk. Transmission can occur through sexual intercourse (vaginal, anal, or oral), blood transfusion, contaminated hypodermic needles, between mother and baby during pregnancy, childbirth, or breastfeeding, or other forms of contact with the body fluids.
AIDS is the most severe form is caused by a retrovirus HIV.AIDS infection that usually affects the vital organs of the human immune system such as CD4 + T cells (a type of T cells), microbial, and dendritic cells. HIV include CD4 + T cells directly and indirectly. Whereas CD4 + T cells necessary for the immune system to function properly.
If HIV has killed CD4 + T cells to shrink in number to less than 200 per microliter of blood, the immunity at the cellular level will be lost, and the result is a condition called AIDS. Acute HIV infection will progress to clinically latent infection, and symptoms of early HIV infection and ultimately AIDS, which is identified by examining the number of CD4 + T cells in the blood and the presence of certain infections.
Without antiretroviral therapy, median duration of progression of HIV infection to AIDS is nine to ten years, and the average survival time after an AIDS only about 9.2 months. However, the rate of progression of the disease in each person varies widely, from two weeks to 20 years.
Many factors that influence it, such is the power of the body to defend against HIV (such as immune function) from an infected person. Parents generally have a weaker immune system than younger people, and thus more at risk of rapid disease progression.
If HIV has killed CD4 + T cells to shrink in number to less than 200 per microliter of blood, the immunity at the cellular level will be lost, and the result is a condition called AIDS. Acute HIV infection will progress to clinically latent infection, and symptoms of early HIV infection and ultimately AIDS, which is identified by examining the number of CD4 + T cells in the blood and the presence of certain infections.
Without antiretroviral therapy, median duration of progression of HIV infection to AIDS is nine to ten years, and the average survival time after an AIDS only about 9.2 months. However, the rate of progression of the disease in each person varies widely, from two weeks to 20 years.
Many factors that influence it, such is the power of the body to defend against HIV (such as immune function) from an infected person. Parents generally have a weaker immune system than younger people, and thus more at risk of rapid disease progression.
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