IIRC, in Mostar, Hercegovina, most of the traffickers have been Muslim. I don't think anyone really gave a fat damn about stopping the trafficking in Mostar until the death of Olena Popik, a prostitute from the Ukraine.
And this from the BBC this morning -- Europe Warned about (Human) Trafficking http://news.bbc.co.uk/2/hi/europe/5297944.stm
Yes, and it appears that the main worry in that case was that she had AIDs & hepatitis, rarely used condoms and slept with an average of 8 men per day right up until the day before she died.
So, in other words, no one gave a damn that she was forced into sexual slavery and prostitution against her will -- only that she was potentially "a health hazard", and how many more were there like her?