The causality is wrong.  Legalisation doesn’t prevent HIV/AIDS transmission, safe sex, or effective regulation. Workers need to be taught about safe sex; safe sex needs to be legalised; and HIV transmission criminalised. National governments need to concentrate on providing access to prevention tools - such as condoms.  Legalisation should not suddenly be announced by government but only done if it is what sex workers want and is the best option for them, this can be done through consolations with groups such as the Global Network of Sex Workers Projects(see NSWP, 2013), to help formulate policy that will work for everyone