Saliva, Tears and Sweat
Although very low quantities of HIV have been found in saliva and tears of infected people, there is no evidence that contact with saliva, tears, or sweat has ever resulted in transmission of HIV. Laboratory studies have shown that saliva has natural properties that limit the power of HIV to infect, and the amount of virus in saliva appears to be very low
em:
http://www.sfaetc.ucsf.edu/resources/PD ... vJan09.pdf
Taken the extremely low risk of HIV transmission in the health care setting, universal precaution in handling blood and other body fluids was generally advocated as the most effective measure in further minimising the chance of infection. HIV has been
isolated from blood, semen, saliva, tears, urine, vaginal secretion, cerebrospinal fluid, synovial fluid, breast milk and amniotic fluid of infected individuals. However only blood, blood products, semen, vaginal secretion and breast milk have been linked to HIV transmission.
Em:
http://www.info.gov.hk/aids/pdf/g129.pdf
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Saliva, tears, sweat, and urine can have the virus in them, but in such small concentrations that nobody has ever been infected through them. However, if any body fluid is visibly contaminated with blood, the risk of transmission exists. Theoretically, it is possible to get HIV by saliva, tears, sweat, or urine alone. However realistically, the chances are so small, that in over 15 years that we have been tracking this epidemic worldwide, we have not found a single case directly linked to saliva, tears, sweat or urine.
It is important that we live our lives understanding the differences between theoretical risks and realistic risks. Theoretically, you can be killed today by being hit with a meteor. Meteors can and do, hit the Earth. But realistically, the chances are so remote, that we don't warn people to stay off the streets to avoid being hit with meteors. When we're talking about the risks of HIV from saliva, tears, sweat and urine, the concept is the same. Yes, theoretically, there is a risk of infection. But it's such a small risk, that we don't warn people to avoid contact with these body fluids to avoid infection with HIV. Let me repeat, that in over 15 years that we have been tracking this epidemic worldwide, we have not found a single case directly linked to saliva, tears, sweat or urine.
You will note that when I discuss about the low risks of saliva, tears, sweat and urine, I state that the risks are "extremely low", "extremely remote", "very unlikely" and other similar terms. Note these are not absolute terms. Realistically, the chances of infections with these body fluids are so small, that we realistically don't have to warn people to avoid contact with these body fluids, as far as the risk of HIV is concerned.
Em:
http://www.thebody.com/Forums/AIDS/Safe ... Q8691.html
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