Can HIV be transmitted by kissing?

Casual contact through closed-mouth or "social" kissing is not a risk for transmission of HIV. Because of the potential for contact with blood during "French" or open-mouth kissing, CDC recommends against engaging in this activity with a person known to be  infected. However, the risk of acquiring HIV during open-mouth kissing is  believed to be very low. CDC has investigated only one case of HIV infection that may be attributed to contact with blood during open-mouth kissing.

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1. How HIV is Transmitted?
2. Is HIV transmitted in the in the environment?
3. Is HIV transmitted in households?
4. Can HIV be transmitted in businesses and other settings?
5. Can HIV be transmitted by kissing?
6. Can HIV be transmitted by biting?
7. Can HIV be transmitted by way of saliva, tears and sweat?
8. Do insects transmit HIV?
9. How effective are condoms?