IMO, the ‘ativo’ garotos de programa that identify as straight, even if they tolerate protected receptive anal, tend to be less informed about HIV pharmacological exposure prophylaxis and the risks of insertive anal without a condom.
Moreover, unless things have changed since I last investigated, PrEP is issued to males without cost if they declare their risk-group status ... MSM, commercial sex work, etc. Some of the fellows would never suck up the sense of stigma regarding attendance at dispensing centres and the requirement of regular testing for HIV, kidney function, etc.
Personally, I always assume that each of them has an STD that I don’t want transmitted.
The more expensive Gilead’s Truvada is the sole product, generics not having yet made their way into Brazil uptake. It is estimated that about 30,000 of brasileiros consume it, slowly upticking to the goal of 50,000 by end of 2022 that was set end of 2017 when 5,000 was the target.
Assuming, say, 5% of the adult male population age 16-65 have sex with males, only about one in 100 are likely taking PrEP.
Even if those demographics are inaccurate by a considerable margin, the story is fairly clear.