Aids wikipedia

These children are called AIDS orphans. People can get HIV from the exchange of bodily fluids and from sharing needles. Children can also get HIV from their mothers when they grow inside pregnant mothers and when they drink breast milk.

Aids wikipedia

Sexual The majority of HIV infections are acquired through unprotected sexual relations. Sexual transmission can occur when infected sexual secretions of one partner come into contact with the genitaloralor rectal mucous membranes of another.

In high-income Aids wikipedia, the risk of female-to-male transmission is 0. For various reasons, these rates are 4 to 10 times higher in low-income countries.


As a result, a panel of experts convened by WHO and the UNAIDS Secretariat has "recommended that male circumcision now be recognized as an additional important intervention to reduce the risk of heterosexually acquired HIV infection in men.

Blood or blood product In general if infected blood comes into contact with any open woundHIV may be transmitted. This transmission route can account for infections in intravenous drug usershemophiliacs and recipients of blood transfusions though most transfusions are checked for HIV in the developed world and blood products.

It is also of concern for persons receiving medical care in regions where there is prevalent substandard hygiene in the use of injection equipment, such as the reuse of needles in Third World countries. Health care workers such as nurses, laboratory workers, and doctors have also been infected, although this occurs more rarely.

People who give and receive tattoospiercingsand scarification procedures can also be at risk of infection. Since transmission of HIV by blood became known medical personnel are required to protect themselves from contact with blood by the use of Universal precautions.

Mother-to-child The transmission of the virus from the mother to the child can occur in utero during pregnancy and intrapartum at childbirth. In the absence of treatment, the transmission rate between the mother and child is around 25 percent.

Other routes HIV has been found at low concentrations in the salivatears and urine of infected individuals, but there are no recorded cases of infection by these secretions and the potential risk of transmission is negligible. HIV Superinfection Unlike some other viruses, infection with HIV does not provide immunity against additional infections, particularly in the case of more genetically distant viruses.

Both inter- and intra-clade multiple infections have been reported, [45] and even associated with more rapid disease progression. Coinfection refers to two strains that appear to have been acquired at the same time or too close to distinguish.

Reinfection or superinfection is infection with a second strain at a measurable time after the first. Both forms of dual infection have been reported for HIV in both acute and chronic infection around the world.

A matrix composed of the viral protein p17 surrounds the capsid ensuring the integrity of the virion particle. Embedded in the viral envelope are proteins from the host cell and about 70 copies of a complex HIV protein that protrudes through the surface of the virus particle.

Three of these genes, gag, pol, and env, contain information needed to make the structural proteins for new virus particles.

History of HIV/AIDS - Wikipedia

The six remaining genes, tat, rev, nef, vif, vpr, and vpu or vpx in the case of HIV-2are regulatory genes for proteins that control the ability of HIV to infect cells, produce new copies of virus replicateor cause disease. The Vpu protein p16 influences the release of new virus particles from infected cells.

Regions in the LTR act as switches to control production of new viruses and can be triggered by proteins from either HIV or the host cell. The Psi element is involved in viral genome packaging and recognized by Gag and Rev proteins.

Indeed, macrophages play a key role in several critical aspects of HIV infection. Macrophages and microglial cells are the cells infected by HIV in the central nervous system. In tonsils and adenoids of HIV-infected patients, macrophages fuse into multinucleated giant cells that produce huge amounts of virus.

It does this by down-regulating the expression of CXCR4 on the surface of these cells. Some people are resistant to certain strains of HIV. Sexual intercourse is the major mode of HIV transmission.

Both X4 and R5 HIV are present in the seminal fluid which is passed from a male to his sexual partner.The human immunodeficiency virus (HIV) is a lentivirus (a subgroup of retrovirus) that causes HIV infection and over time acquired immunodeficiency syndrome (AIDS).

AIDS is a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. Matenda yambula mankhwala ya AIDS. Matenda yambula kuchiliskika ya AIDS yakwambika na kanthu kamoyo kadoko chomene kakuti tingakawona na maso yithu pela kwambula wovwiri wa mashini, (masenga ya bazungu) yayi ako pa.

Acquired immunodeficiency syndrome or Acquired immune deficiency syndrome (AIDS) is a syndrome caused by a virus called HIV. Acquired means that people are not born with the disease. They get it after being infected with the HIV virus.

Immune or Immuno-talks about the immune system. The foundation had one critical mission: to bring hope to children with HIV and AIDS. Today, the Elizabeth Glaser Pediatric AIDS Foundation is the global leader in the fight to end AIDS in children.

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With your help, we can eliminate pediatric AIDS for good. AIDS is a disease featured on several episodes, first being seen in the Season Six episode, "Jared Has Aides". Background In "Jared Has Aides", Jared Fogle said he had 'aides' (a personal trainer and dietitian), and he wanted to give everyone aides as well.

Unfortunately, everyone thought he. The vast majority of cases of AIDS outside sub-Saharan Africa can be traced back to that single patient (although numerous unrelated incidents of AIDS among Haitian immigrants to the U.S.

Aids wikipedia

were recorded in the early s, and as evidenced by the case of Robert Rayford, isolated incidents of this infection may have been occurring as early as ).

HIV/AIDS in South Africa - Wikipedia