I think this would be a good time for someone to post a link about HIV/AIDS issues/safety/education. Any takers?
HIV is spread primarily by:
Not using a condom when having sex with a person who has HIV. All unprotected sex with someone who has HIV contains some risk. However:
Unprotected anal sex is riskier than unprotected vaginal sex.
Among men who have sex with other men, unprotected receptive anal sex is riskier than unprotected insertive anal sex.
Having multiple sex partners or the presence of other sexually transmitted diseases (STDs) can increase the risk of infection during sex. Unprotected oral sex can also be a risk for HIV transmission, but it is a much lower risk than anal or vaginal sex.
Sharing needles, syringes, rinse water, or other equipment used to prepare illicit drugs for injection.
Being born to an infected motherHIV can be passed from mother to child during pregnancy, birth, or breast-feeding.
Less common modes of transmission include:
Being stuck with an HIV-contaminated needle or other sharp object. This risk pertains mainly to healthcare workers.
Receiving blood transfusions, blood products, or organ/tissue transplants that are contaminated with HIV. This risk is extremely remote due to the rigorous testing of the U.S. blood supply and donated organs/tissue.
HIV may also be transmitted through unsafe or unsanitary injections or other medical or dental practices. However, the risk is also remote with current safety standards in the U.S.
Eating food that has been pre-chewed by an HIV-infected person. The contamination occurs when infected blood from a caregivers mouth mixes with food while chewing. This appears to be a rare occurrence and has only been documented among infants whose caregiver gave them pre-chewed food.
Being bitten by a person with HIV. Each of the very small number of cases has included severe trauma with extensive tissue damage and the presence of blood. There is no risk of transmission if the skin is not broken.
Contact between broken skin, wounds, or mucous membranes and HIV-infected blood or blood-contaminated body fluids. These reports have also been extremely rare.
There is an extremely remote chance that HIV could be transmitted during French or deep, open-mouth kissing with an HIV-infected person if the HIV-infected persons mouth or gums are bleeding.
Tattooing or body piercing present a potential risk of HIV transmission, but no cases of HIV transmission from these activities have been documented. Only sterile equipment should be used for tattooing or body piercing.
There have been a few documented cases in Europe and North Africa where infants have been infected by unsafe injections and then transmitted HIV to their mothers through breastfeeding. There have been no documented cases of this mode of transmission in the U.S.
HIV cannot reproduce outside the human body. It is not spread by:
Air or water.
Insects, including mosquitoes. Studies conducted by CDC researchers and others have shown no evidence of HIV transmission from insects.
Saliva, tears, or sweat. There is no documented case of HIV being transmitted by spitting.
Casual contact like shaking hands or sharing dishes.
Closed-mouth or social kissing.
All reported cases suggesting new or potentially unknown routes of transmission are thoroughly investigated by state and local health departments with assistance, guidance, and laboratory support from CDC.
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How do HIV tests work?
The most commonly used HIV tests detect HIV antibodies the substances the body creates in response to becoming infected with HIV. There are tests that look for HIV's genetic material or proteins directly; these may also be used to find out if someone has been infected with HIV.
It can take some time for the immune system to produce enough antibodies for the antibody test to detect, and this window period between infection with HIV and the ability to detect it with antibody tests can vary from person to person. During this time, HIV viral load and the likelihood of transmitting the virus to sex or needle-sharing partners may be very high. Most people will develop detectable antibodies that can be detected by the most commonly used tests in the United States within 2 to 8 weeks (the average is 25 days) of their infection. Ninety-seven percent (97%) of persons will develop detectable antibodies in the first 3 months. Even so, there is a small chance that some individuals will take longer to develop detectable antibodies. Therefore, a person should consider a follow-up test more than three months after their last potential exposure to HIV. In extremely rare cases, it can take up to 6 months to develop antibodies to HIV.
Conventional HIV tests are sent to a laboratory for testing, and it can take a week or two before the test results are available. There are also rapid HIV tests available that can give results in as little as 20 minutes. A positive HIV test result means that a person may have been infected with HIV. All positive HIV test results, regardless of whether they are from rapid or conventional tests, must be verified by a second confirmatory HIV test.
How can HIV be prevented?
Because the most common ways HIV is transmitted is through anal or vaginal sex or sharing drug injection equipment with a person infected with HIV, it is important to take steps to reduce the risks associated with these. They include:
Know your HIV status. Everyone between the ages of 13 and 64 should be tested for HIV at least once. If you are at increased risk for HIV, you should be tested for HIV at least once a year.
If you have HIV, you can get medical care, treatment, and supportive services to help you stay healthy and reduce your ability to transmit the virus to others.
If you are pregnant and find that you have HIV, treatments are available to reduce the chance that your baby will have HIV.
Locate an HIV testing site.
Abstain from sexual activity or be in a long-term mutually monogamous relationship with an uninfected partner.
Limit your number of sex partners. The fewer partners you have, the less likely you are to encounter someone who is infected with HIV or another STD.
Correct and consistent condom use. Latex condoms are highly effective at preventing transmission of HIV and some other sexually transmitted diseases. Natural or lambskin condoms do not provide sufficient protection against HIV infection.
Get tested and treated for STDs and insist that your partners do too.
Locate an STD testing site.
Male circumcision has also been shown to reduce the risk of HIV transmission from women to men during vaginal sex.
Do not inject drugs. If you inject drugs, you should get counseling and treatment to stop or reduce your drug use. If you cannot stop injecting drugs, use clean needles and works when injecting.
Locate resources on substance abuse treatment.
Obtain medical treatment immediately if you think you were exposed to HIV. Sometimes, HIV medications can prevent infection if they are started quickly. This is called post-exposure prophylaxis.
Participate in risk reduction programs. Programs exist to help people make healthy decisions, such as negotiating condom use or discussing HIV status. Your health department can refer you to programs in your area.
Read our Questions and Answers about HIV Prevention.
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