Risk behaviours of Hong Kong male residents travelling to mainland China: a potential bridge population for HIV infection

The objective was to assess levels of high-risk sexual behaviour, condom us e, sexually transmitted disease (STD) history and AIDS-related perceptions among Hong Kong men returning from China by land; 1,254 systematically samp led subjects were interviewed. Of respondents, 32.5% had sexual intercourse with a commercial sex worker (CSW) in China in the past six months; 11.2% have done so on this trip. A third of those who reported having sex with CS Ws did so without a condom. A fifth had a history of STDs: seventy per cent of respondents who did not use a condom with a CSW would not use a condom with their regular sexual partner. Less educated respondents, 31-40-year-ol ds and non-business and frequent travellers were more likely to have sex wi th a CSW. Those who practice high-risk sex fear AIDS more, are aware that t heir own risk of HIV infection is nor negligible, but think that chances of HIV infection from CSWs in China are small. Although Hong Kong's estimated HIV prevalence among adults is low (0.06%), the huge volume of cross-borde r travel between Hong Kong and China and the common practice of high-risk s ex by Hong Kong male travellers provide a bridge for emerging epidemics to spread.