Sex workers are seen as local population and the programme based on this perception is ineffective. Sex industry holds up where the men go because sex workers need money and men want sex. Many researches on sex industry in Vietnam found that the sex industry involves various key players such as madams, pimps, guesthouse owners, etc. The sex industry is extremely mobile, particularly the women who are the majority of the sex workers. Sex workers come from other provinces and move on fairly quickly because of the local situation, number of clients, campaigns against social evils.
Sex workers are too outside their home environment.
Just as the other mobile workers, sex workers take more risks than they would at home and are forced also to take more risks because of the mobile clients are the 'risk mode'. In Vietnam, different institutions like Provincial AIDS Committee, Women's Union, Youth Union, NGOs have taken the programme with these groups. Also, in many researches on sex workers it was shown that sex workers have no power to negotiate condom use and are vulnerability. CARE has received many positive feedback from the project partners for this project. It is not a problem with people doing the programme with women stay and men move.