Zhong Nanshan, an academician of the Chinese Academy of Engineering, said in an interview with CCTV that there will be no large-scale outbreaks in China in winter.

Reporter: New Year's Day and the Spring Festival are approaching, and everyone's travel needs have increased. What needs to be guarded during this process?

Zhong Nanshan: The increase in holiday travel demand is inevitable, and there is no need to prohibit travel in China, which is very different from abroad. However, travel now requires more attention. It is also not encouraged to go abroad. Domestic ones are okay. Of course, some domestic ones are now classified as medium-risk areas. Don't go. This is also right. The basic thing is to wear masks, wash your hands frequently, and keep your distance. This is still necessary. If this is the case, I think we can still spend the New Year and Spring Festival safely.

Zhong Nanshan: The domestic epidemic will not break out on a large scale in winter, but be wary of "environmental transmission"

Reporter: At the domestic level, some local cases and asymptomatic infections have also appeared in some cities recently. Does this mean that the winter epidemic may rebound?

Zhong Nanshan: Generally speaking, we say that the rebound is still increasing on a large scale like the beginning. I don't think there will be, it won't. Because China has formed a very effective and relatively strict prevention and control mechanism, early prevention and control mechanisms in the community, these are very good. But you said there will be repeated and scattered discoveries.

Reporter: Not long ago, you raised the issue of "environmental transmission" of the new crown virus. How should we understand it? How to deal with it?

Zhong Nanshan: I think that in several places in China, some local cases have increased. This may seem to be related to the environment and human-to-human transmission, but this issue requires our next step. If the substance is infected, what concentration will it be infected? How is it contagious? How to kill? These are all scientific problems that we need to solve.The most basic are masks, hand washing, and distance, but masks, hand washing, and distance are also an important method to prevent environmental and material transmission. So it seems that the current practice in China is one of these basic skills, and the other is to pay more attention to external inspections. Therefore, we need to conduct more research as a scientific problem, how to find the infection faster, and how to disinfect it with some effective drugs faster.

Reporter: Not long ago, you raised the issue of "environmental transmission" of the new crown virus. How should we understand it? How to deal with it?

Zhong Nanshan: I think that in several places in China, some local cases have increased. This may seem to be related to the environment and human-to-human transmission, but this issue requires our next step. If the substance is infected, what concentration will it be infected? How is it contagious? How to kill? These are all scientific problems that we need to solve.The most basic are masks, hand washing, and distance, but masks, hand washing, and distance are also an important method to prevent environmental and material transmission. So it seems that the current practice in China is one of these basic skills, and the other is to pay more attention to external inspections.Therefore, we need to conduct more research as a scientific problem, how to find the infection faster, and how to disinfect it with some effective drugs faster.

Zhong Nanshan: The current results of the vaccine have proven safe and effective

Reporter: What are the current international and Chinese vaccine development progress?
Zhong Nanshan: Our vaccine research and development in China is relatively early, and it is considered relatively early in the world, but the third phase means that it will be used in the epidemic area. At that time, there were no patients in China, and it took a long time to negotiate abroad. It was delayed for three or four months. Now we have the result.Many countries have proven (China's vaccine), first, safety, and second, what is it? Protective. Then it is too early to have to compare which is better. Because protection is only one of the factors, the quality of this vaccine depends on its cost performance, side effects, whether it is easy to transport, and whether it is easy to store. There are 5 types of vaccines that need to be compared. . At present, the whole virus inactivated vaccines used in foreign countries are also safe and effective.

Zhong Nanshan: You also need to wear a mask after being vaccinated

Reporter: Who must be vaccinated? Is it necessary for ordinary people to be vaccinated? Do we no longer need to wear masks after being vaccinated?
Zhong Nanshan: For the more urgent ones, of course, the ones with more international connections. All international shipping, trains, trucks, ships, medical staff, and elderly people have relatively low resistance. These need to be considered first. of.In addition, should normal people also be vaccinated? It should be vaccinated. When we are in mass production, it is easier for everyone to establish a so-called herd immunity after vaccination, which means that most people have been vaccinated and they have antibodies, so it is more at ease. Vaccines are now being used, and vaccines are still in short supply. Therefore, there is a gap between prevention and vaccines when they are being used. This "gap" is very important. It’s not right to put all hope in the vaccine now. Even if everyone planted the vaccine, there are a few problems. The vaccine will usually be effective after a month. If one shot is given, three weeks later, we will get two shots. After one month, even if the effect is effective, it will not be 100%. It only took a year for the vaccine to develop, and it was developed in less than a year. Now it can be used urgently, but the best vaccines need to be compared. Therefore, even if you go to high-risk areas or in some dangerous areas in the future, you need to be vaccinated with prevention, and the two aspects can be combined.

Reporter: Even if we have antibodies, do we still have to have such prevention and control measures, including wearing masks?

Zhong Nanshan: I can't answer accurately now. But the antibodies produced are a good preventive effect for yourself, so will the antibodies produced be infected? Are there any symptoms of the infection? no one knows. The infection has no symptoms, but no one knows whether it will be passed to people. So this is a new topic. This cannot be a judgment right now.

Zhong Nanshan: Virus mutations increase infectivity

Reporter: Are there any changes in the spread and fatality rate of the virus? Does it pose new challenges to our medical care?
Zhong Nanshan: If there is a new virus, the infectivity will increase for sure. But so far there is no evidence that this mutation will cause resistance to the vaccine, no. But the general rule is this. If there are more and more diseases, there will definitely be more and more mutations. Will there be a situation where the mutation will really affect the vaccine, and the vaccine will lose its protective effect. This is possible. Therefore, governments around the world need to work together with scientific and technological workers to reduce its spread and reduce the number of patients. In this way, its chances of mutation are reduced.

Yangzhou Fongming Cable Factory, a mid-to-high-end mica wire manufacturer, pays attention to the changing situation of the world's hot spots.