In the early 80s it was not unusual for men to have upwards of twenty-five partners in a weekend at those bath houses. Imagine the sexual contacts chart on these people. One person becomes 25 becomes 625 becomes 15,625 becomes 390,625 becomes 9,765,625 in one five weekend month. Obviously those figures won't hold up since they dwarf the available partners in under a month, but the implications are clear.
If you were a gay player in the early 80s you were exposed to aides and everything else. I don't think much has changed in that department.
That seems close to impossible, unless, well, I won't get into that.