As for issues of science, I don't think that it is correct to ostracize HIV-positive patients. The risk of contracting HIV is essentially non-existant provided that proper precautions are taken. They are as much a part of our community as diabetics would like to be a part of main-stream communities. Both diseases need to be cured. I make the same point regarding people who visit African countries.
Risks are everywhere.
People count - learn to interact with everyone.