>>10446218not that anon, but the answer is probably first-line oral antibiotics. In Southeast Asia, you can can get all of them over the counter for extremely cheap, and so a lot of prostitutes take them to prophylactically avoid STI's, not understanding that it's gonna make things worse for them personally in the long term
There are STI's which are resistant to all 1st line antiobiotics as of a few years ago, and I think there was a British guy who got something which was immune to all antibiotics