Please note Bangladesh, Lebanon, Turkey and Senegal.
Bangladesh: "Bangladesh is a source and transit country for men, women, and children subjected to trafficking in persons, specifically forced labor and forced prostitution. ... Children both boys and girls are trafficked within Bangladesh for commercial sexual exploitation, bonded labor, and forced labor. Some children are sold into bondage by their parents, while others are induced into labor or commercial sexual exploitation through fraud and physical coercion. Women and children from Bangladesh are also trafficked to India for commercial sexual exploitation. ... Bangladeshi children and adults are also trafficked internally for commercial sexual exploitation, domestic servitude, and bonded labor.
Recent reports indicate many brothel owners and pimps addict Bangladeshi girls to steroids, with devastating side effects, to make them more attractive to clients; the drug is reported to be used by 90 percent of females between 15 and 35 in Bangladeshi brothels."
Lebanon: "Lebanon is a source and destination country for women and children subjected to trafficking in persons, specifically conditions of forced labor and forced prostitution. ... The Lebanese governments artiste visa program, which facilitated the entry of 4,518 women from Eastern Europe, Morocco, and Tunisia in 2009 to work in the adult entertainment industry, serves to sustain a significant sex trade and facilitates sex trafficking. There is limited anecdotal information indicating that some children in Lebanon may be subjected to situations of forced labor and commercial sexual exploitation"
Turkey: "Turkey is a destination and transit country for women and children subjected to trafficking in persons, specifically forced prostitution, and for some women and men in forced labor. ... Officials identified an increased number of women subjected to forced prostitution from Uzbekistan, Turkmenistan and Kyrgyzstan in 2009. ... According to local experts, sex trafficking victims are generally forced into prostitution in illegal brothels or are leased by clients and kept in private residences or hotels. Although a much smaller problem, some internal trafficking involving Turkish citizens
in both the legal and illegal prostitution sectors may occur."
Senegal: "Senegal is a source, transit, and destination country for children and women subjected to trafficking in persons, specifically forced labor, forced begging, and commercial sexual exploitation. ... In addition to forced begging, Senegalese boys and girls are subjected to involuntary domestic servitude, forced labor in gold mines, and commercial sexual exploitation. ... NGO observers ... believe that most local women in forced prostitution remain in Senegal. Women and girls from other West African countries, particularly Liberia, Ghana, Sierra Leone, and Nigeria, may be subjected to commercial sexual exploitation in Senegal, including for international sex tourism."
Source:
US department of State's Trafficking in persons report
These countries are not models of well regulated prostitution. Turkey in particular demonstrates how legal brothels do not drive illegal brothels out of business.