On the afternoon of January 19, the Joint Prevention and Control Mechanism of the State Council held a press conference on the prevention and control of the epidemic during the Spring Festival.

Chang Zhaorui, a researcher at the Communication and Prevention Department of the Chinese Center for Disease Control and Prevention, said that the population is generally susceptible to the new coronavirus, and some people who have not yet been infected cannot rule out the increased risk of infection due to factors such as travel fatigue and frequent contact with people during the Spring Festival.

  It is recommended that relevant personnel continue to do a good job in personal protection, maintain a healthy lifestyle such as regular work and rest, reasonable diet, and moderate exercise, and implement personal protective measures such as wearing masks and washing hands frequently when going out.

People who have been infected with the new coronavirus should also continue to take good personal protection to prevent infection of other respiratory infectious diseases including influenza.

Data map On January 17, passengers waited in an orderly manner in the waiting hall of Shenzhen North Railway Station.

Photo by China News Agency reporter Chen Wen

With the rapid development of the epidemic, what is the situation of people who have not passed the sun?

  Li Tongzeng, Chief Physician of the Department of Infectious Diseases, Beijing You'an Hospital: In this wave of epidemics, there may be many situations where there may be no "positive" in the body.

For example, some citizens did not have a "positive time" because of the protective measures in place.

Some citizens have no symptoms after infection, and are asymptomatic infections.

Some citizens had been infected before this wave of epidemics and had antibodies in their bodies, but they didn't notice it.

 Will people who have never been "Yang" be more vulnerable to new strains than those who are "Yangkang"?

  Li Tong Zeng: After being infected with the new coronavirus, the human body will produce antibodies.

Within 3 to 6 months after being infected with the new coronavirus, there is generally no re-infection.

Antibody levels will gradually decline over time. At this time, whoever has strong immunity and slow decline in antibody levels will be "protected" for a longer period of time.

  The severity of the disease after infection is related to the pathogenicity of the virus.

At present, the pathogenicity of the variant strains of Omicron is almost the same.

If a person who has been "positive" is infected again, the condition may be milder than the first infection.

People who have not had a "positive" infection will be infected to a similar degree to other people when they were infected for the first time.

 How to protect those who are not "positive"?

  China News Service (CNS1952) integrates China News Network, Beijing Daily, and CNR.com