Yet Pang Xinghuo, director of Beijing's Center for Disease Control and Prevention, said overall H1N1 flu prevention efforts have been successful.

More than 100,000 people in China have been infected with H1N1 flu, Xinhua News Agency reported. In comparison, the United States has had more than 22 million cases since the virus was first identified in April.

Pang declined to comment on whether improper treatment led to an increase in cases.

Beijing Wantai Biological Pharmacy Enterprise Co Ltd is producing a new rapid test to detect swine flu, which could help medical experts diagnose and treat the virus more effectively.

The test is expected to be available for commercial use early next year.

It already has been tried on 10,000 people nationwide with an overall response rate above 80 percent, said Qiu Zixin, Wantai general manager.

The cost for the test per person will be about 200 yuan ($30). Other tests used to identify H1N1 flu are 1,000 yuan.

"If the new rapid test can be available in hospitals and Beijing's CDC, it will help us to provide better medical treatment to patients," said Peng Bibo, an expert from the Armed Police General Hospital.

As of Dec. 20, 10,448 Beijing residents have been inoculated for A/H1N1, according to statistics from the Beijing CDC.