In June this year, Zhang Wenhong's team published a scientific research result, which was a study of the proportion of asymptomatic cases among confirmed cases during the outbreak in Shanghai in the first half of the year.
From the end of March to May this year, Shanghai implemented a 75-day lockdown, which was only one day less than Wuhan.
During the lockdown period, there were more than 56,000 confirmed cases in Shanghai, and there were more than 550,000 asymptomatic infections . Zhang Wenhong's team studied the symptoms of these 56,000 confirmed cases.
In the end, Zhang Wenhong came up with the result that among all the cases in Shanghai, the asymptomatic rate was as high as 98%. Even among confirmed patients with mild symptoms, only 4% had fever.
Shortly after Zhang Wenhong's paper was published, the country issued the ninth edition of the prevention and control guidelines, which made significant changes to the criteria for new crown diagnosis. Zhang Wenhong should also have a share of the credit for this.
Who is Zhang Wenhong?
can be said to be a benchmark figure in the field of epidemic prevention and control in Shanghai. Zhang Wenhong is the director of the National Medical Center for Infectious Diseases, the director of the Department of Infectious Diseases at Huashan Hospital, the director of the Department of Internal Medicine at Fudan University Shanghai Medical College, and the leader of the Shanghai COVID-19 treatment team. It can be said that he has multiple identities in one.
In September 2022, he was nominated as the only "Special Award" winner in the popular science category of the Shanghai Science and Technology Award.
Zhang Wenhong came into public view at the beginning of the outbreak in Wuhan. At this time, the world's understanding of the new crown was still vague. The timely voice of Zhang Wenhong and other experts was like bringing light in the dark night.
However, Zhang Wenhong’s prediction of the proportion of asymptomatic infections was “slapped in the face” against the background of full liberalization and a sharp increase in the number of infections. Because 98% of people who are infected are not asymptomatic, many people report having symptoms.
Moreover, the symptoms of many people are not as light as what experts said before. Many people have high fevers, aches all over their bodies, and lack of energy. Even after recovery, some people still have long-term stuffy nose and cough.
However, some sharp-eyed people discovered that Zhang Wenhong’s research results have been removed from the Internet, and the full text of the article is currently unavailable.
Zhang Wenhong made some revisions to this view a few days ago. He believes that the symptoms of Omicron in the north are indeed more severe than those in the south. Of course, the truth of this statement is mainly affected by the climate conditions in the north, and winter in the north has always been a period of high incidence of upper respiratory tract diseases. After the full liberalization of
, the phenomenon of infection among the elderly is worrying. In the past few days, Zhang Wenhong expressed his latest views at the COVID-19 Prevention and Control Lecture Hall.
Zhang Wenhong came to a new point of view by visiting many nursing homes in Shanghai. The proportion of symptomatic people among the infected people in Shanghai is indeed higher than in the first half of the year.
As for why this phenomenon occurs, Zhang Wenhong did not explain in detail. Moreover, Zhang Wenhong did not reveal how much higher this ratio was compared to his previous research results.
Most areas across the country have now ushered in the first wave of peaks, and a large proportion of the population has already had sun exposure.
Judging from the personal experience of many people, after being infected with the same virus , the symptoms displayed by individuals vary greatly. But most people will have obvious symptoms, not most people are asymptomatic.
But some people's symptoms are indeed mild and they can return to normal in a day or two. Others are relatively severe and may require a recovery period of more than 2 weeks.
In Zhang Wenhong’s latest opinion, he also expressed research on the seriousness rate of elderly people after infection. After visiting a number of nursing homes, Zhang Wenhong believes that this round of Shanghai virus, the seriousness rate among the elderly after infection has remained stable compared with April and May.
If this result is true, then it can be considered a good thing for Shanghai.
Shanghai has now ushered in the first wave of the epidemic peak. Through various community outpatient clinics, Shanghai's current medical resources congestion problem is serious, but it can basically be maintained.
According to convention, one to two weeks after the peak of infection is reached, the peak of severe illness will occur. Severe cases will occupy more medical resources. If the proportion of severe cases is not accurately predicted, Shanghai will face greater difficulties.
