Zhang Boli, an academician of the Chinese Academy of Engineering, said that the conditions for returning to Class B in crown disease have become increasingly mature, but the measures for downgrade control are major adjustments to the prevention and control of the epidemic.Make adjust in time and orderly.

In January 2020, China was included in the management of Class B in statutory infectious diseases, but it took preventive and control measures for Class A infectious diseases.

Zhang Boli told the Science and Technology Daily on Wednesday (December 7) that now it seems that the decision -making at that time was still decisive in Meiji, which avoided hundreds of millions of people being infected and saved hundreds of thousands of lives.The experience of vaccine and drug research and development and accumulation of treatment has won time, laying the foundation for the phased results of the crown disease epidemic prevention and control.

But Zhang Boli said that after nearly three years of popularity, with the continuous mutation of the virus, its pathogenesis gradually weakened.For example, there are more than 160,000 local infected people in Guangzhou in this round of epidemics, asymptomatic infected people account for about 90 % of the total infection. There are only four cases of severe and critical condition. There are no cases of death."From the characteristics of virus and disease, the necessary conditions for continuing Grade Grade management at the moment have gradually decreased significantly."

"Whether the new crown pneumonia continues to be re -considered according to the management of Class A infectious diseases, how to adjust is more in line with coordinated planningThe requirements for the prevention and control of the epidemic and the development of economic and social development. "Zhang Boli believes that the conditions for returning to Class B management in Class B are becoming increasingly mature.

According to reports, the main basis of China's infectious disease management method comes from the infectious and pathogenicity of infectious diseases.For infectious diseases with strong infectious, strong pathogenicity, and high disease mortality rate, generally classified as class A or class B management. The control measures are generally adopted for mandatory isolation, epidemic blocks, etcHigh rates, but limited communication capacity, and infectious diseases that cause certain harm to society are classified as Class B; for infectious diseases with strong infectious, weak pathogenic, and low disease mortality, it is generally classified as Class C.

Zhang Boli said that returning crown disease to Grade B management can release a large number of medical resources from the square cabin hospital and return to normal diagnosis and treatment;The focus is on the key population; it can also provide a certain legal basis for further optimization of prevention and control measures in the future, so that there are laws.

But he also believes that the measures to relegate the relegation of crown diseases are a major adjustment of the prevention and control of epidemic, which will have a huge impact on people's lives, economy and society.We should adhere to the steady progress and step by step, comprehensive research and judgment based on the virus mutation and the epidemic changes, to change the response, and make adjustments in a timely and orderly adjustment."Winter has arrived, and spring is not far, let alone the coming year is still early spring."