The article goes on to say that in these high risk places the HIV Positive rate is 3.5% - triple that of the general New York City population. ...
It is estimated that 25-33% of gay and bisexual men in NYC are HIV Positive.
Your math has to be wrong, as those 2 statements dont square logically, unless either:
(i) 9 out of 10 people in bathhouses are straight, or
(ii) HIV+ gays uniformly stay away from bathhouses.
I dont think either of those are true.
I found that very confusing as well.
I’m just quoting what was in the study. It is at the link - maybe you can find what the discrepancy is.