So what happens if one of these guys gets a triple infection?
This was probably just waiting to happen, because people who are already infected with HIV probably don't worry about catching it afterwards, and if they meet someone else who has HIV probably decide, "oh well, we're both infected, so why worry?"
Now it looks like we are finding out what happens when the AIDS virus mutates into different viruses, and someone gets two or more of them.
Many homosexuals in Manhattan are also doing lots of crystal meth. It's all the rage and you know it's a problem when you see meth help posters in the subways around the Village. I wonder concurrent drug abuse is affecting this or possibly causing the mutations.