Will the second wave of infection peak in March-May? Two groups of people may be most affected!

Will the second wave of infection peak in March-May? Two groups of people may be most affected!

During the Spring Festival that just passed, there was no significant rebound in the epidemic. With the emergence of the Omicron variants CH.1.1, XBB.1.5, BQ.1.1, BQ.1 and XBB, people are very concerned about the possible second wave of infection peak. Recently, the topic of "the second wave of infection peak may be from March to May" has also become a hot search.

Why is the second wave of infection peak predicted to be between March and May?

Xing Mingyou, chief physician of the infectious department of Tongji Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, analyzed in an interview with Yangtze River Daily on January 31 that from the perspective of virology and epidemiology, the antibody level in the body will maintain a relatively high peak for 3 to 6 months after "Yang Kang", and there is only a 2% probability of reinfection in a short period of time. However, our country has a very large population base. Starting from December last year, after another 3 to 6 months, our antibody levels will slowly decline. At this time, if there is a new virus variant, we are very likely to develop clinical symptoms after reinfection, and there is still a possibility of a peak.

Professor Xing Mingyou predicts that the second wave of infection peaks may come in March-May, but this time the peak may not be so obvious to the public. Because everyone was infected at different times, and because we have a basic antibody level after the second infection, the number of people infected in the second round, the severity of infection symptoms, and the degree of time concentration will be much weaker than the first time.

Lu Mengji, a German-Chinese virologist and professor at the Institute of Virology at the Medical School of the University of Essen, also said in an interview with China Newsweek on February 1 that it is expected that from late March this year, as people's immunity declines, the risk of infection will increase. In May and June, the epidemic situation will change significantly, and we may face a second wave of impact. But whether the second wave of the epidemic will occur in March or May and June depends on whether a new strain with a very strong impact will appear.

Two groups of people may be greatly affected in the future

1. The elderly who are still recovering

Professor Lu Mengji, a virologist and professor at the Institute of Virology, Medical School, University of Essen, Germany, said in an interview with China Newsweek that many elderly people who have been infected are now in the recovery period, and many people with poor physical fitness may be infected again, and the consequences may be very serious. At this stage, some high-risk groups with immune deficiencies who have not been infected may also face the impact of the next wave of the epidemic.

2. People who have not yet been infected

Currently, the people who have not been infected are the most affected by the epidemic, estimated at 15% to 20%. Compared with the previous situation where the entire population was susceptible, the impact has been reduced, but given my country's population base, the scale of the population involved is still very large.

What can we do? Do two things well

If everyone takes the first responsibility for their own health, maintains social distance, and develops good hygiene habits, infection and secondary infection can be prevented to a large extent.

1. Keep wearing a mask

Professor Xing Mingyou, chief physician of the infectious department of Tongji Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology, reminded in an interview with Yangtze River Daily that masks must be worn in a standardized manner, especially in public places with dense crowds. It is sufficient for ordinary people to wear medical surgical masks in regular travel. In some high-risk positions and environments, the probability of infection increases and N95 masks need to be worn.

2. Three groups of people will be given priority for vaccination

Professor Xing Mingyou said in an interview with Yangtze River Health Media that since the antibodies produced after the first infection have disappeared six months after "Yang Kang", it is very necessary to boost the vaccine at this time. Vaccination can delay the time of infection, or reduce the probability of infection.

Three groups of people are recommended to be vaccinated first:

1. Work in high-risk positions such as doctors, couriers, etc.;

Second, elderly patients with underlying diseases such as diabetes, hypertension, tumors, or patients who have undergone dialysis or transplantation;

3. For people who developed pneumonia during the first infection and were hospitalized for severe symptoms, they must receive a booster vaccine 6 months after the first "Yang Kang".

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