The bigger question is what is the general health of the person undergoing the tummy tuck surgery. Current therapies for HIV infection have allowed those with the infection to have virtually undetectable levels of the virus and to essentially live a full life in good health. This doesn't mean that the virus isn't present or that at some point in the future their condition could worsen, into full blown HIV - AIDS for instance, nor does it mean that they are not capable of transmitting the virus to others, including during surgery. It just means that for the present moment they should be considered in good health, and to me that means that as long as they are healthy enough to undergo elective surgery, this should be possible. If there is any associated, or additional for that matter, health issue that would preclude such surgery, just as in anyone else, the surgery should not be done until that issue can be stabilized sufficiently to allow surgery to be safely performed. For our part as surgeons and other health care providers, we should always practice what are referrred to as "universal precautions," and this means that everyone, no matter their known health status, is treated with the same precautions and procedures. Thus, we shouldn't be treating anyone with known HIV any differently than anyone else in the general population. This is the way things should work in theory; in reality you may find some surgeons who still decline to perform the surgery for various reasons. In such instances, and in the event that your primary doctors believe that you are medically healthy enough to undergo the surgery, I think the best thing to do is identify an experienced board certified plastic surgeon who is familiar with the practice of universal precautions and capable of peforming the suragery for you. Best of luck.