Multiple sexual partners and condom use among long-distance truck drivers in Thailand.

Sexual behaviors of long-distance truck drivers in Thailand were investigated to define patterns and determinants critical to the transmission of HIV. This article reports on commercial, spousal, and other sexual partners and on condom use among 327 drivers interviewed in 1992. Forty-eight percent reported a commercial sex worker (CSW) as their first partner and 87% had contact with a CSW at some time. Median lifetime number of all partners was 29. In the 6 months prior to interview, 35% had two or more partners. Among the currently married, 23% had CSW contact within the past 6 months; 13% had contact with a nonmarital, noncommercial partner; and about 8% reported marital as well as both CSW and noncommercial relationships in the same time period. Over half the unmarried reported sexual relations in the 6 months; 25% reported contacts with both CSW and noncommercial partners. About 40% of subjects visiting CSWs used condoms inconsistently or not at all. Drivers were knowledgeable about AIDS and prevention measures, with some important misconceptions, but self-assessment of risk of HIV showed a negligible sense of their personal vulnerability.