“…HIV risk associated with CSW is, thus, highly contextually dependent, and this is well illustrated by a recent Vietnamese study which sampled sex workers from four border provinces. The prevalence of HIV among the sex workers ranged from 0% in a sample of 216 sex workers in one province, to 24% in a sample of 400 sex workers in another province (30) Notwithstanding the importance of sex work in the development of the HIV epidemic, there have been surprisingly few reviews of the determinants of sex work; exceptions include (28,29,31,32).…”