Chinas present epidemic and disease prevention system has lagged behind the development of various diseases and public health problems brought by industrialization and aging of the population, the officials said.
　　The ministry has several separate disease prevention and control centers, such as the National Center for AIDS Prevention and Control, but it is hard for them to pool efforts and to cover all fields. Many difficulties in improving the countrys health were a result of the shortage of advanced technology in preventive medicine, adequate epidemic supervision and effective health education.
　　Now, AIDS, TB and other infectious diseases pose serious threats to public health, while more and more people continue to die from non-infectious diseases. Experts estimate / that China now has 600,000 HIV/AIDS victims,and the number is increasing by 30 percent annually. However, there is still no effective prevention and control system to fight the deadly disease.
　　Meanwhile, people lack knowledge of the cause, spread and development of epidemic, vermin-cause（寄生虫引起的）, occupational diseases and many other non-infectious diseases. This makes control work more difficult. Official figures show / that 90 percent of total deaths are caused by chronic and non-infectious diseases, such as tumors and blood diseases of the heart and brain. 　　
　　At the same time, China is becoming an aging society, with 10 percent of its population over 60. This will also bring many public health problems / which will need effective supervision and study.

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