HIV spreads... twice as likely to women as to men
That study is on the verge of being pointless.
For in order to become "infected", any such male had to first defy odds and acquire the infection from somewhere.
Were studies like this one on-target, the spread of HIV through the heterosexual population would have been rampant over these last 30 years, instead of the relative trickle they've been, compared to predictions of the past.
HIV simply does not spread "twice as likely to (heterosexual) women as to (heterosexual) men". (and surely the lesbian-to-lesbian transmission rate isn't very significant, so then just where ARE these supposed trillions of women who have HIV then?)
The spread of HIV has been like a checkerboard among the hetero population, where even if every single male who had HIV gave it to every single female partner with whom he had sexual contact, the only possible way for new heterosexual males to become infected in recent decades would be for them to defy the supposedly-much-longer odds of their becoming infected BY an HIV-carrying female in order to acquire HIV in the first place.
Thus, statistically, and strictly among the hetero population, the chances of a male getting HIV from a woman and the chances of a woman getting HIV from a man are approximately equal (because the man had to have gotten HIV from somewhere, at relatively long odds, in order to then give it to a woman).
And that, of course, is precisely whyyyyyyyyyyyyyyyyyyyyyyyy HIV/aids has not spread at the rampant rate which was once predicted and feared.