Sex work is legal only when done in indoor establishments and with a license. Selling sex on the streets is legal grey area and police routinely clamp down, meaning street-based sex workers are liable to police harassment and arrest. Police also raid indoor establishments to enforce licensing rules. Many sex workers work without license/health card and if caught are fined by police.
Brothels are fined for employing unlicensed sex workers. Unclear if there are other laws against organising/managing.
Police use laws against loitering and vagrancy against sex workers
Yes - for sex workers who choose to comply with licensing rules, they must have medical check-up every 8-15 days, HIV test every 6 months, syphilis every 2 months and chlamydia and herpes every 4 months. Sex workers must pay the costs of all these tests.
Yes - for sex workers to work legally they must be licensed after presenting medical certificates.
No, regulations are overly restrictives.
Gertler, P. J., & Shah, M. (2011). Sex work and infection: what’s law enforcement got to do with it?. Journal of Law and Economics, 54(4), 811-840.; https://nacla.org/article/sex-workers-outsmart-quito-police-0; http://latinamericacurrentevents.com/9000-resgistered-sex-workers-guayaquil-ecuador/25320/