Some body fluids, such as saliva, sweat and urine, do not have enough HIV in them to infect someone. HIV is not passed on by spitting, sneezing or coughing.
You cannot pass on HIV by kissing, by hugging, or by shaking hands with somebody – or any other normal social contact.
Nor can you pass on HIV to someone else by being in the same place as them, by using the same toilet, or by sharing household items such as cups, plates, cutlery, or bed linen.
In the UK, there are safeguards in place to ensure that blood, organs and sperm donated for use in medical procedures are not HIV-infected.
Once outside the body, HIV usually can’t survive for very long at all. Coming into contact with blood or semen that has been outside the body doesn’t generally pose a risk for HIV transmission.
It is possible for HIV to be transmitted by someone accidentally cutting themselves with a blade or needle they have used to treat a person living with HIV. This is called a needlestick injury and the risk of being infected is very low. However, if someone thinks they have been exposed to HIV that way, post-exposure prophylaxis (PEP) may be an option.
Similarly, the risk of passing on HIV to someone else if you injure yourself is also very low. Wash away any blood with soap and hot water and cover the wound with a sticking plaster or dressing.
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This article was last reviewed on 30/9/2012 by T. Kelaart
Date due for the next review: 30/9/2014
Content Author: S. Corkery (NAM)
Current Owner: S. Corkery (NAM)
More information:
Wu L Biology of HIV mucosal transmission. Curr Opin HIV AIDS 3(5): 534-540, 2008
Shugars DC et al. The role of the oral environment in HIV-1 transmission. JADA 129:851-858, 1998
Skolnik P et al. Absence of infectious HIV–1 in the urine of seropositive individuals. J Inf Dis 160(6): 1056-1060, 1989
Mueller AJ et al. Infrequent detection of HIV-1 components in tears compared to blood of HIV-1-infected persons. Infection 20(5):249-52, 1992
Cohen M et al. Antiretroviral treatment to prevent the sexual transmission of HIV-1: results from the HPTN 052 multinational randomized controlled ART. Sixth International AIDS Society Conference on HIV Pathogenesis, Treatment and Prevention, Rome, abstract MOAX0102, 2011. http://www.aidsmap.com/Treatment-is-prevention-HPTN-052-study-shows-96-reduction-in-transmission-when-HIV-positive-partner-starts-treatment-early/page/1879665/
www.aidsmap.com HIV transmission http://www.aidsmap.com/HIV-transmission/page/1254898/ Protecting your own and other people’s sexual health http://www.aidsmap.com/Protecting-your-own-and-other-peoples-sexual-health/page/1255057/
www.aidsmap.com How transmission occurs http://www.aidsmap.com/cms1320672.aspx Low risk, theoretical risk and impossible routes http://www.aidsmap.com/cms1320695.aspx
Accidents http://www.aidsmap.com/resources/Accidents/page/1322778/
First aid following accidents involving blood http://www.aidsmap.com/resources/Minimising-the-risk-of-exposure-to-blood-products-and-blood-borne-viruses/page/1324547/#item1320854
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