Just half of the men in a survey of those who use prostitutes have been tested for HIV, despite the risk of infection, Aids Concern says. The group yesterday released results of a survey of 90 of the 200 men who have used its free HIV rapid testing service since it was launched in August last year. The tests, and pre-test counselling, are given free of charge. They are part of the outreach programme, the first of its kind in Hong Kong, which encourages clients of female sex workers to be tested. Marco Chau Ting-leung, prevention officer in-charge of Aids Concern's Sex Industry Outreach Programme, said: 'From this figure we know that the testing rate in Hong Kong is still very low. We are talking about a high-risk group here and it is only 50 per cent of them who have ever been tested.' Seventy-five of those surveyed said that knowing the result of the HIV test within an hour was the main reason they took the test. The survey also showed that 64 respondents believed the testing service was useful in improving their knowledge on safer sex and HIV while 76 men said pre-test counselling also increased their understanding about HIV/Aids. Eighty-one men said Aids Concern should continue the service. Aids Concern said out of the 200 tests conducted, no one was found to have been infected with HIV. 'I am not saying that the prevalence rate is low. The only thing I can say is we did only 200 tests so it is not a significant number of tests to reflect what is happening in the area,' Mr Chau said. Those who want to get tested can dial the hotline 8203-3772, noon to 8pm on weekdays. A staff member will answer inquiries and handle appointments for tests.