"They claim that their stand on promiscuity, homosexuality, drug taking and blood transfusions makes them practically 'immune' to the disease."
Wrong, wrong, wrong:
Promiscuity does not in itself cause the spread of HIV which can eventually turn into AIDS. Unprotected sex is what transmits it. There is the risk of a condom breaking that could open one to transmission. But, infection can only then happen if one of those involved is HIV positive. One cannot contract HIV from another person if the other person is HIV negative.
Homosexuality does not in itself cause the spread of HIV as long as those engaged in sexual activities do so in a protected manner. For example, one of my closest friends who's a gay ex-JW and has been actively sexual since the early 80s is still HIV negative. In addition, he had one long-term monogamous relationship with an HIV positive man who died and is in another long-term relationship with his current partner who's HIV positive. My friend still remains HIV negative due to his taking the appropriate precautions of safer sex. I myself am gay and have been sexually active --- at one point very much so, currently only occasionally active --- and am still HIV negative. Also, keep in mind that HIV first exploded on the scene among African black straight people, not gays.
Drug taking does not in itself cause the spread of HIV. The taking of intravenous drugs using needles that have been used by other HIV positive people causes the spread of HIV.
Blood transfusions does not in itself cause the spread of HIV. It did in the early period of the disease. That was largely due to the irresponsible behavior of blood banks not taking measures to make the blood supply safer after there was ample evidence that blood could pass the virus. For a better understanding of the subject read the book or the movie made on the book "And the Band Played On."
John W Wirtanen