Zeng Guang, a well-known public health and epidemiology expert: Strengthening vaccination must be accelerated, and the vaccine must be changed for the fourth dose

On December 22, Zeng Guang , a well-known expert in public health and epidemiology , delivered a speech on the theme of “Causes and Countermeasures of this Wave of Epidemic Storm” at the Innovation Forum of the 2022 NetEase Future Conference.

He interpreted the knowledge about the transmission route and causes of the virus that the public is concerned about. “Why did the epidemic storm come so fast and fiercely, and in what direction will it develop?” Zeng Guang said that from the perspective of public health, the speed at which an infectious disease spreads depends on three links and two factors. The three links are the source of infection , the route of transmission and the susceptible population, and the two factors refer to natural factors and social factors.

Zeng Guang believes that now that the source of infection, the route of transmission, the susceptible population, as well as natural and social factors have undergone tremendous changes, the sharp increase in cases cannot be attributed to the liberalization of the epidemic, but to a combination of reasons. “Don’t think that this disease is a serious disease. Once you get sick, you need to go to the infectious disease hospital for isolation, or even go to the ICU. This is unnecessary. In the face of the invasion of the disease, we should focus on prevention in the past to ensure that it does not happen. The epidemic prevention measures based on medical runs and rescuing critically ill patients are effectively limiting the epidemic.” At the scene, Zeng Guang gave prevention and cure suggestions for different groups of people. Regarding the question of whether there will be secondary infection or repeated infection that everyone is concerned about, he said, “This infection storm is very serious. One of the characteristics is that we have popularized natural immunity. Now we must speed up vaccination, especially For the elderly who have not been infected, medical staff, and those who have more contact with the public, they must be vaccinated first. Whether they have received two or three injections before, they can start to receive the fourth injection. For the fourth dose, the vaccine must be changed, and inactivated vaccines can no longer be used.”

In addition, he also mentioned that from a national perspective, the epidemic will continue for two to three months, spanning New Year’s Day and Spring Festival, that is, when spring comes, the national epidemic situation will improve. Humans live in a world of viruses. Viruses have been on the earth for hundreds of millions of years, and we humans have only been on the earth for tens of thousands of years. “Experience tells us that viruses are constantly mutating, and there are tens of thousands of viruses around us. Tens of thousands of viruses may mutate. Is it Omicron or the new coronavirus that mutates in the end? It may be it, There may be other viruses as well.”