Zhang Wenhong, director of infectious diseases department of Huashan Hospital affiliated to Fudan University and director of National Infectious Diseases Medical Center, made an in-depth analysis on the changes of epidemic situation, prevention and control effects, challenges faced by Omicron and future prevention and control modes. In particular, antibody escape occurred in Omicron, COVID-19. Let's see what the research results say first.

The team of Fudan University published a paper in the internationally famous journal Cell-Host and Microbe, and found that the titer of the virus in Omicron and the existing antibody serum was greatly reduced, whether it was BA. 1, BA.2 or ba.3.. Moreover, it also has the function of antibody escape to the serum of infected patients in recovery period, that is to say, due to the variation of virus, the neutralization titer of Omicron has escaped to a certain extent, which will greatly reduce the effect of existing antibody therapy and vaccine.

The meaning expressed in the paper is obvious, that is, the effect of our Omicron vaccine is greatly reduced, and the risk of infection is greatly increased. The spreading power of Omicron has reached 9.5 people, and its spreading speed has surpassed that of chickenpox in existing infectious diseases, so its spread is very difficult to control, which also leads to the expansion of the scale of detection and tracking, and even adopts the way of regional silence to stop the epidemic of the disease.

Faced with this situation, we should respect science and seek truth from facts, and we must never use the western "collective immunization" model to deal with it, which will be disastrous to China's population size, medical resources and social costs. We must strictly and unswervingly follow the national epidemic prevention policy of "dynamic elimination", find a case, control an area, block an area, cut off the infection coverage rate in time, and beat the infection rate with the speed of epidemic prevention. Shanghai's experience in this area is worth learning, while Beijing is very perfect in prevention and control.

The two work best together. In the face of the rampant Omicron, we ordinary people should have a correct attitude and respond positively. Vaccination must achieve full coverage, take the initiative to participate in community nucleic acid testing, adhere to wearing masks in public places, and be diligent in washing hands, disinfection and ventilation. As long as we all unite, COVID-19 virus can resist me.