BEIJING- The Chinese capital officially registered 973 new HIV/AIDS cases in the first 10 months of this year, up 53.71 percent from a year earlier, a health official said on Wednesday.

"Incidents of the disease are still on the rise in Beijing and it is spreading from the high-risk groups of people to the general population," Jin Dapeng, head of the Beijing Municipal Health Bureau, told a working conference on AIDS prevention.

No specific figures were immediately available about which groups of people were involved in the 973 new cases and how many for each group.

Bureau statistics revealed that as of the end of October, Beijing had registered 4,663 HIV/AIDS cases since 1985. These included 171 foreigners, 964 locals and 3,524 from other places.

Needle sharing and sex remained the main transmission routes, Jin said.

"The task remains very tough for Beijing. AIDS prevention among the migrant population is a new challenge." He noted that more than 70 percent of HIV/AIDS sufferers were migrants, a group which accounted for about a quarter of the city's population.

"Beijing has yet to work out a specific policy on AIDS prevention among migrants. It will be a priority in our future work."

Also, Jin said, members of high-risk groups refuse to take HIV/AIDS tests out of fear of discrimination.

To improve the monitoring of AIDS in the city, health authorities would keep close watch over high-risk groups, such as people working at the entertainment venues, beauty salons and massage parlors where the sex trade could take place, Jin said.

"They'll be obliged to be tested for HIV/AIDS infection," he said.

Apart from that, local education authorities would order all of the city's middle schools and universities to offer courses on AIDS prevention and provide relevant literature at their libraries, as part of the effort to disseminate knowledge about AIDS prevention among students, he added.

The number of HIV/AIDS sufferers in China was estimated to be 650,000, according to the last major survey in 2005 by the Ministry of Health, Joint United Nations Program on HIV/AIDS and World Health Organization (WHO). The actual number was thought to be much higher.

China had 183,733 officially reported HIV/AIDS cases last year.