Where is the source of the epidemic in Beijing? Disease control expert Wu Zunyou: There are two possibilities

　　Where is the source of infection? Disease control experts respond to hot spots in Beijing epidemic situation

　　CCTV News: Beijing has found newly confirmed cases, where is the source of infection? How to prevent and control? Come listen to the introduction of disease control experts.

CCTV reporter Jiang Shan: We saw that the new cases in Beijing this time are all related to the new market, how to determine the source of the infection?

Wu Zunyou, chief expert in epidemiology of the Chinese Center for Disease Control and Prevention: Beijing has had no cases for nearly 60 days, and it should not have occurred naturally in Beijing. Then there are two possibilities for this kind of input, one is that the contaminated items are brought to Beijing, and the other is the spread caused by infected people entering Beijing.

CCTV reporter Jiang Shan: Is the frozen environment easier for the virus to survive because of its low temperature?

Wu Zunyou, chief expert in epidemiology of the Chinese Center for Disease Control and Prevention: When we collect biological samples containing viruses, these samples are stored in a low temperature environment. The lower the temperature, the longer the storage time. Like frozen foods, if contaminated, the virus can survive on these surfaces for 2 to 3 months.

CCTV reporter Jiang Shan: Many people are now worried about whether this means that the epidemic is coming back. What do you think?

Wu Zunyou, chief expert in epidemiology of the Chinese Center for Disease Control and Prevention: It should be said that Beijing’s response is strong and effective. After several months of experience in the fight against new coronary pneumonia, I think that the epidemic in Beijing will not come back with everyone’s worry.

CCTV reporter Jiang Shan: So in the face of the new changes in the virus, do we have any new issues that require attention?

Wu Zunyou, chief expert in epidemiology at the Chinese Center for Disease Control and Prevention: These measures include wearing masks to maintain social distance, washing hands and ventilating frequently. These measures are very effective. I want to clarify that it is not completely determined that it is food. It is only highly suspected that there is the greatest possibility of contamination, but further investigation is needed. As far as possible, do not buy imported agricultural products or frozen foods. They must be cooked and cannot be eaten raw. At the same time, when handling these raw foods, we must pay attention to hand hygiene. For vegetables, in general, it will not cause the problem of infection caused by pollution, because most vegetables are produced locally or in the surrounding areas without causing pollution.