AIDS (acquired immune deficiency syndrome) is the final and one of the most serious stage of the infection by HIV, which produces severe damage to the immune system. AIDS begins when a person with infection by HIV has a count of cells CD4 (a type of immune cell also denominated ” T” cells; or “cooperating lymphocytes T”) below 200. Also it is defined by numerous opportunistic infections and cancers that appear in the presence of the infection by HIV. Causes, incidence and factors of risk AIDS ( acquired immune deficiency syndrome) is the fifth important cause of death in the people between 25 and 44 years of age in the United States. Around 25 million people anywhere in the world they have died because of this infection from the beginning of the epidemic and 40,3 million people are at the moment living with HIV/SIDA in global terms. Human immunodeficiency virus (HIV) causes AIDS. This virus attacks the immune system and leaves to the vulnerable organism to a great variety of infections and potentially mortal cancers. The common bacteria, the levaduriformes fungi, the parasites and the virus that generally do not bring about serious diseases in people with an immune system that works normally can bring about mortal diseases in the people with AIDS. One has been HIV in salvation, tears, weave of the nervous system, blood, semen (including the preseminal liquid), vaginal flow and maternal milk. Nevertheless, only through the blood, the vaginal semen, secretions and maternal milk the contagion with other people appears. The transmission of the virus happens: Through sexual or oral contact, vaginal or anal manner. A pregnant woman can transmit the virus to her fetus through fact to share the circulation of the blood or a nursing mother can transmit it to her baby by milk. There is other little common transmission methods like an accidental injury with a needle, artificial insemination by a donated semen and through transplants of organs. The infection by HIV does not propagate by accidental contact like a hug, to touch to things that have been touched previously by a person infected with the virus, neither during the participation in sports nor by mosquitoes. One does not transmit the people who DONATE blood or organs. The people who donate organs do not enter direct bonding with they receive which it. In the same way, anybody that donates blood does not have contact with it receives which it. In all these procedures sterile needles and instruments are used. Nevertheless, HIV can be transmitted the person who RECEIVES blood or organs of an infected donor. It is by that the blood donation points and the programs of donation of organs make meticulous examinations to the donors, the blood and the weaves. Between that they are in the group with greater risk they can mention: Those that have sex without protection The sexual companions of people who participate in activities of high risk (like anal sex) The intravenous drug users that share the needles The children born from mothers with HIV who did not receive the therapy for HIV during the pregnancy People who received sanguineous transfusions or hemoderivados between 1977 and 1985 (before the establishment of the evaluations standard to look for the virus in the blood). AIDS begins with an infection by HIV. It is possible that the people infected with HIV do not present/display symptoms during 10 years or more, although yes can transmit the infection to others during this asymptomatic period. In the meantime, if the infection is not detected and the treatment begins, the immune system is debilitated gradually and AIDS is developed. The acute infection by HIV progresses with time to an infection by asymptomatic HIV and soon to early symptomatic infection by HIV. Later, it progresses to AIDS (defined like the infection by HIV very outpost with count of cells T below 200). The majority of the individuals infected with HIV and without treatment will develop AIDS. There is a small group of patients who very slowly develop AIDS or that develop never it. To these individuals it is called patients to them without progression of the disease and many seem to have a genetic difference that it avoids that the virus adheres to certain immune receivers.
Symptoms
The symptoms of AIDS are mainly the result of infections that normally are not developed in people with a healthy immune system. These are called “opportunistic infections “. HIV exhausts the immune system of the patients with AIDS, who are very susceptible to these opportunistic infections. The common symptoms are fever, perspiration (particularly at night), inflamed glands, chills, weakness and loss of weight. It is possible to be sent to the section of signs and examinations next to see a list of the common opportunistic infections and the main symptoms associated with them. Note: The initial infection with HIV can be asymptomatic. Nevertheless, the majority of the people yes undergo symptoms similar to the influenza with fever, coetaneous eruption, irritation of throat and inflammation of the lymphatic ganglia, generally two weeks after contracting the virus. Some people with infection by HIV remain per years without symptoms between the time of the exhibition and the development of AIDS.
