Homosexual men have become a major transmitter for HIV in Beijing, a survey by the Chinese Centre for Disease Control and Prevention shows. Of the 526 Beijing-based gay men participating in the survey, 17 tested positive for HIV, an infection rate of 3.26 per cent. Wu Zunyou , director of the Aids control branch of the centre, described the infection rate as 'a conservative estimate' of the real situation in the capital, the Beijing News reported. In other major cities the HIV infection rate among gay men was more than 10 per cent, said Mr Wu, who has just completed a tour of the centres. The paper did not name the cities. The survey also found 99 per cent of the participants have more than one sexual partner, and more than one-third of them engage in bisexual activities. Also, only 20.2 per cent used condoms every time, while 17.5 per cent never used any protection during sex, the paper said. The survey found that during the past six months a high percentage of participants have offered sex for money. More than 10 per cent of them, mostly youngsters under 23, provided sex for money. The survey, billed by mainland media as the country's first comprehensive report on HIV transmission among homosexual men, was conducted between July and December last year using techniques such as face-to-face interviews and laboratory analysis. Previous state media reports estimated there were 30 million gay people in the country, two-thirds of them - about 20 million - male. Health officials said the report fanned rising concerns over the upward trend of HIV infections caused by unsafe sex. In a report released by the Ministry of Health late last month, among the 39,644 new confirmed cases of HIV/Aids on the mainland in the first 10 months of the year, intravenous drug use accounted for 37 per cent, while unsafe sex had caused 28 per cent, almost three times the number recorded before 2002.