Source: China News Network, National Health Commission, Science and Technology Daily, etc
From 0 to 24:00 on March 28, 31 provinces (autonomous regions and municipalities directly under the Central Government) and the Xinjiang Production and Construction Corps reported 1,293 new confirmed cases.
Of these, 1228 were indigenous cases
There were 1055 cases in Jilin City, including 622 cases in Changchun City, 426 cases in Jilin City, and 7 cases in Siping City;
There were 96 cases in Shanghai, including 39 cases in Pudong New Area, 10 cases in Jing'an District, 9 cases in Minhang District, 8 cases in Baoshan District, 7 cases in Changning District, 6 cases in Xuhui District, 4 cases in Hongkou District, 4 cases in Songjiang District, 3 cases in Putuo District, 2 cases in Jiading District, 2 cases in Qingpu District, 1 case in Huangpu District, and 1 case in Jinshan District;
There were 12 cases in Shandong, including 8 cases in Zaozhuang City, 3 cases in Tai'an City, and 1 case in Binzhou City;
There were 10 cases in Liaoning, including 5 cases in Shenyang City, 3 cases in Huludao City, 1 case in Anshan City, and 1 case in Yingkou City;
There were 8 cases in Guangdong, including 3 cases in Shenzhen City, 3 cases in Zhaoqing City, 1 case in Maoming City, and 1 case in Dongguan City;
There were 7 cases in Tianjin, including 3 cases in Xiqing District, 2 cases in Hebei District, 1 case in Hedong District, and 1 case in Dongli District;
7 cases in Fujian, all in Quanzhou City;
There were 6 cases in Hebei, including 5 cases in Langfang City and 1 case in Baoding City;
There were 5 cases in Heilongjiang, including 4 cases in Harbin City and 1 case in Daqing City;
There were 4 cases in Zhejiang, including 1 case in Hangzhou City, 1 case in Ningbo City, 1 case in Jiaxing City, and 1 case in Zhoushan City;
3 cases in Shanxi, all in Xinzhou City;
There were 3 cases in Jiangsu, including 1 case in Changzhou City, 1 case in Suzhou City, and 1 case in Taizhou City;
There were 3 cases in Henan, including 2 cases in Zhoukou City and 1 case in Zhengzhou City;
3 cases in Hunan, all in Changsha City;
There were 3 cases in Shaanxi, including 2 cases in Ankang City and 1 case in Baoji City;
There were 2 cases in Anhui, including 1 case in Huainan City and 1 case in Xuancheng City;
Jiangxi 1 case, in Nanchang City
There were 48 cases converted from asymptomatic infected people to confirmed cases (21 cases in Shanghai, 12 cases in Jilin, 6 cases in Fujian, 4 cases in Tianjin, 3 cases in Shandong, 1 case in Liaoning, 1 case in Zhejiang). There were no new deaths. There were no new suspected cases.
On the same day, 1179 new cured and discharged cases were cured and discharged, 31264 close contacts were released from medical observation, and the number of severe cases increased by 1 case compared with the previous day.
There are 838 confirmed cases* imported from overseas (no severe cases) and 15 suspected cases. The cumulative number of confirmed cases is 17,370*, the cumulative number of cured and discharged cases is 16,532, and there are no deaths.
As of 24:00 on March 28, according to reports from 31 provinces (autonomous regions and municipalities directly under the Central Government) and the Xinjiang Production and Construction Corps, there are 27,859 confirmed cases (including 59 severe cases), 113311 cured and discharged cases, 4,638 cumulative deaths, 145808 confirmed cases and 15 suspected cases. A total of 2258351 close contacts have been traced, and 370261 close contacts are still under medical observation.
31 provinces (autonomous regions and municipalities directly under the Central Government) and the Xinjiang Production and Construction Corps reported 5,758 new cases of asymptomatic infection.
Among them, there are 5658 cases in China
There were 4381 cases in Shanghai, including 2463 cases in Pudong New Area, 360 cases in Minhang District, 304 cases in Baoshan District, 282 cases in Huangpu District, 207 cases in Jiading District, 115 cases in Fengxian District, 108 cases in Changning District, 93 cases in Jing'an District, 91 cases in Songjiang District, 86 cases in Xuhui District, 79 cases in Putuo District, 68 cases in Chongming District, 54 cases in Qingpu District, 49 cases in Yangpu District, 18 cases in Jinshan District, and 4 cases in Hongkou District;
There were 812 cases in Jilin City, including 500 cases in Jilin City, 310 cases in Changchun City, and 2 cases in Siping City;
There were 124 cases in Fujian, including 122 cases in Quanzhou City and 2 cases in Zhangzhou City;
There were 108 cases in Hebei, including 73 cases in Tangshan City, 34 cases in Langfang City, and 1 case in Shijiazhuang City;
There were 64 cases in Liaoning, including 36 cases in Shenyang City, 20 cases in Yingkou City, 5 cases in Dalian City, 1 case in Jinzhou City, 1 case in Liaoyang City, and 1 case in Tieling City;
There were 41 cases in Shandong, including 27 cases in Binzhou City, 8 cases in Weifang City, 3 cases in Zibo City, 2 cases in Qingdao City, and 1 case in Tai'an City;
There were 21 cases in Jiangsu, including 13 cases in Suzhou City, 5 cases in Xuzhou City, 1 case in Nanjing City, 1 case in Nantong City, and 1 case in Yangzhou City;
There were 20 cases in Heilongjiang, including 11 cases in Jiamusi City, 6 cases in Harbin City, and 3 cases in Suihua City;
There were 16 cases in Anhui, including 13 cases in Wuhu City, 1 case in Bengbu City, 1 case in Huainan City, and 1 case in Tongling City;
11 cases in Gansu, all in Lanzhou City;
There were 10 cases in Tianjin, including 4 cases in Hebei District, 2 cases in Jinghai District, 1 case in Hedong District, 1 case in Nankai District, 1 case in Dongli District, and 1 case in Xiqing District;
10 cases in Guangdong, including 6 cases in Shenzhen City and 4 cases in Dongguan City;
There were 10 cases in Guangxi, including 6 cases in Fangchenggang City, 2 cases in Beihai City, and 2 cases in Baise City;
There were 8 cases in Zhejiang, including 6 cases in Jiaxing City, 1 case in Ningbo City, and 1 case in Lishui City;
There were 8 cases in Henan, including 3 cases in Jiaozuo City, 2 cases in Zhoukou City, 1 case in Zhengzhou City, 1 case in Luohe City, and 1 case in Zhumadian City;
There were 6 cases in Yunnan, including 4 cases in Dehong Dai Jingpo Autonomous Prefecture and 2 cases in Kunming City;
5 cases in Jiangxi, all in Nanchang City;
2 cases in Hunan, both in Changsha City;
1 case in Sichuan, in Chengdu;
On the same day, 72 cases of confirmed cases (24 cases imported from abroad) were lifted from medical observation on the same day; 910 cases were released from medical observation (125 cases imported from abroad); and 43,425 asymptomatic infected people were still under medical observation (1,309 cases imported from abroad).
A total of 307661 confirmed cases have been reported from Hong Kong, Macao and Taiwan. Among them, there were 284683 cases in Hong Kong Special Administrative Region (43,043 cases discharged from hospital, 7,420 deaths), 82 cases in Macao Special Administrative Region (81 cases discharged from hospital), and 22,896 cases in Taiwan Region (13,742 cases discharged from hospital, 853 deaths).
Remarks: *Jilin province reduced 4 cases.
Infographic: Citizens conduct nucleic acid testing. Photo by Zhang Yao, a reporter from China News Service
Why do asymptomatic infected people continue to show up in large numbers? Are asymptomatic infected people contagious? Is it more difficult to prevent and control the increase in asymptomatic infections? On March 28, the reporter consulted Zhang Boli, an academician of the Chinese Academy of Engineering, on the above issues.
"The large number and high proportion of asymptomatic infected people are the obvious characteristics of this round of epidemics." Zhang Boli explained that this feature is not only related to the virus itself, but also related to timely screening, early detection of infection, and more closely related to vaccination.
Most asymptomatic people are because of these three points
First of all, it is related to the characteristics of the Omikejong mutant strain itself. "The new coronavirus variant strain is more contagious, the material is extremely counterproductive, and its toxicity is relatively weak." Zhang Boli explained that the clinical manifestation of the weakening of viral toxicity is that the clinical symptoms will be milder, and many infected people do not show clinical symptoms for a short period of time after infection.
The results of the case-to-case analysis of the Aumequeron strain and delta strains from other countries showed that the case fatality rate of the Aumechjong strain decreased during the epidemic period, indicating that the Aomi kerong strain was less pathogenic than other strains.
"Still, asymptomatic people can't take it lightly." Zhang Boli reminded: First, although asymptomatic, it is still contagious and more insidious; the other is asymptomatic today, and tomorrow there may be symptoms.
"Especially for key populations, such as the elderly, people with underlying medical conditions, as well as infirm, obese and severe smokers, they are at risk of developing and deteriorating and need special attention." Zhang Boli said that for the general asymptomatic people, the focus is on isolation and observation, advocating the use of proprietary Chinese medicine for early intervention, one is to control it without symptoms, especially not to turn into an ordinary type; the other is to promote the early turn of their nucleic acids into yin.
There are many asymptomatic people, which is also related to early screening and early detection.
"After the outbreak of the epidemic, large-scale screening was carried out everywhere, and due to early detection, many patients were still in the early stages of infection and did not have symptoms of infection." Chamberlain said.
With the strengthening of early detection capabilities in various parts of the mainland, the goal of nucleic acid testing in the mainland is to complete the nucleic acid testing task of delineating the area within 24 hours. The latest deployment of nucleic acid screening has enabled all parts of the continent to detect infected people as early as possible and control the source of infection in a shorter period of time. Therefore, compared with the previous experience of going to the sentinel medical institution for fever and dry cough, many infected people have been found much earlier in the time of discovery.
"Another important reason is that mainland residents have been vaccinated on a large scale." Chamberlain explained that the body's immunity in the population is generally enhanced, so it is mostly manifested as asymptomatic.
China News Service reporter Zhang Jinchuan photographed
Asymptomatic infected persons
Is it contagious? How to prevent it?
"At the beginning of this round of outbreaks, after some asymptomatic infected people were diagnosed, there were cases where close contacts around them all showed positive nucleic acid." When analyzing the epidemic situation in Jilin, Zhang Boli said that asymptomatic infected people are prone to the hidden spread of the virus, and when they are discovered, they have caused more people to be infected.
Although asymptomatic infected people have no clinical symptoms, they can detect nucleic acids with viruses in their bodies through nucleic acid detection, have a certain viral load, and are also infectious.
Experts from the joint prevention and control mechanism of the State Council said that from the perspective of epidemic prevention and control, the existence of asymptomatic infected people makes it difficult to find the epidemic, and a large number of asymptomatic infected people will further spread the epidemic if they are not discovered in time, which will increase the difficulty of controlling the epidemic in a timely manner.
In this regard, Zhang Boli said that it is necessary to carry out rapid and strict flow tracing work, the key is fast, early detection, early isolation.
"The epidemic caused by this round of Omi kerong has been hidden for a period of time, and there are multiple ways of infection, so the circulation work is arduous and complex, and it needs to be more rigorous and careful, not only to pay attention to the close connection, sub-close contact, and general contacts of the case, but also to consider whether there is a chain of transmission in the early stage of the case, and find asymptomatic infected people as much as possible." Zhang Boli said that it is necessary to find all asymptomatic infected people in the shortest possible time and completely block community transmission in order to achieve social clearance as soon as possible.