Would western establishment be safer since they only do safe sex? Or did you hear something else?
All girls working in every legal shop are given periodic education in safe sex in their own languages. At $150 shops this is not usually by the management - but eventually a peer outreach program (called SWAP or SWOP or something) visits those shops and does regular welfare checks using female volunteers from the same ethnic background - and they give the ladies educational materials in the relevant language and contact numbers to get help if needed).
Then for reasons I’ve never understood, most ladies go right back to giving BBFS to next 1hr customer that smiles at them.