Nguyen Thi Thanh Thuy*, Vo Tuyet Nhung*, Nguyen Van Thuc**,
Truong Xuan Lien*, Tran Kim Phuong*, Ha Ba Khiem*
* Pasteur Institute in HoChiMinh city,
**
The study aimed determine the
extent of HIV infection among sex workers, to identify risk factors, and to
provide baseline data for developing and targeting prevention measures. 968 sex
workers residing in education centers were enrolled in a cross-sectional study
between August 1995 and October 1996 in three high risk areas. Information was
obtained based on confidential face-to-face interview, physical examination,
and laboratory testing. The global seroprevalence estimated from this study was
5.2% (95% CI: 3.81-6.6). The highest seroprevalence was evidenced in AnGiang
province, a border area adjacent to Cambodia (9.5%) and the lowest was observed
in HoChiMinh city (1.8%). 6 of 7 HIV isolates in AnGiang province were
characterised as Thai sub-type E, one as sub-type B. Multiple logistic
regression showed an independent significant association between HIV
seroprevalence and younger age £30
years old; inconsistant use of condom ,
high frequency of sex >20 times per week; working place at brothels; sign of
genital ulcers; and venereal warts. These data suggested further studies on
risk sexual behavior in