sharon sanders
Editor-in-Chief & President
Omicron spreads hiddenly, this round of epidemic has affected 28 provinces
March 21, 2022 01:32 Beijing News Author: Hu Xianhe
According to the National Health and Health Commission and relevant local health and Health Commissions, since December last year, the global new crown epidemic has entered the fourth wave of epidemic peaks.
Since March, local epidemics have occurred in many places in my country, the number of infected people has increased rapidly, and the scope of infection has continued to expand.
On the first day of March, the first local confirmed cases of this round of the epidemic were found in Yanbian Prefecture in Jilin Province, Qingdao City in Shandong Province, and Putuo District in Shanghai on the same day. Subsequently, in Shandong, Guangdong, Hebei, Yunnan, Shanghai and other places, the number of asymptomatic infections increased rapidly, and the total number of infections continued to rise. From 119 daily cases on March 1 to 3,122 daily cases on March 12, it took only 11 days.
On March 12, 31 provinces (autonomous regions and municipalities directly under the Central Government) and the Xinjiang Production and Construction Corps reported that the number of newly confirmed local cases and asymptomatic infections both exceeded 1,000. Two days later, the country ushered in the peak of the number of infections. On March 14, there were 3,507 new local confirmed cases in a single day, of which Jilin Province accounted for 3,076 cases.
Most of the Omicron variants that swept across the country this time are BA.2 sub-branchs, which are more transmissible and hidden than previous virus strains. WHO estimates based on outbreak data in Denmark, this sub-variant is 30% more infectious than the original Omicron strain BA.1. The new crown virus is spreading invisibly, and the number of asymptomatic infections in many places across the country is large and accounts for a large proportion.
The Joint Prevention and Control Mechanism of the State Council held a press conference at 15:00 on March 19 to report that from March 1 to 18, more than 29,000 infected people had been reported in my country, affecting 28 provinces, of which one province in Jilin Province had reported more than 29,000 cases. 10,000 cases. Four other provinces have cumulatively reported more than 1,000 cases, and 10 provinces have cumulatively reported between 100 and 1,000 cases.
On March 18, the State Council Information Office held a press conference. Wang Hesheng, deputy director of the National Health and Health Commission and director of the National Centers for Disease Control and Prevention, said that the recent analysis of experts organized by the National Health and Health Commission believes that the current round of the global epidemic is a high epidemic, and it will not be in the near future. will end. my country will continue to face a situation of epidemic prevention and control dominated by Omicron virus strains in many places at the same time, and the situation of prevention and control is becoming increasingly severe and complicated.
The cumulative number of infected people in Jilin exceeds 10,000
The first infected person in this round of epidemic in Jilin Province appeared in Yanbian Korean Autonomous Prefecture.
On March 1, Yanbian prefecture informed that on February 28 in Hunchun City of the prefecture, one person was found to have a positive nucleic acid test sample among the "exhaustive inspection" crowd, and was later diagnosed. Three colleagues of the infected person were subsequently diagnosed. On the same day, 4 new local confirmed cases were added in Jilin Province. In the next few days, Jilin City, Changchun City, Songyuan City and other places in Jilin Province also reported confirmed cases one after another. The cumulative number of confirmed cases in Jilin City and Changchun City soon surpassed that of Yanbian Prefecture, and these two cities subsequently became the areas with the largest number of cases in this round of epidemic in Jilin Province.
On March 9, Jilin City completed the genetic sequencing of the new crown pneumonia epidemic. The genetic sequence of the virus in this epidemic is the evolutionary branch of Omicron BA.2. Changchun City announced on the same day that the confirmed cases in the city were highly homologous to the virus sequencing results in Jilin City, and were presumed to be the same transmission chain.
In this round of the epidemic, the campus epidemic in Jilin Province is prominent, and the number of confirmed cases in Jilin Agricultural Science and Technology College is relatively large.
Before March 12, the daily number of new local cases and asymptomatic infections in Jilin Province increased steadily. Until March 13, the development of the epidemic situation in Jilin Province began to attract widespread attention. On the same day, the province's new local confirmed cases exceeded 1,000 for the first time on the 12th, and the number of new asymptomatic infections also reached 744.
At the press conference on epidemic prevention and control in Jilin Province on March 13, Zhang Yan, deputy director of the Jilin Provincial Health Commission and head of the epidemic prevention and control team of the Provincial Epidemic Prevention and Control Leading Group Office, introduced that the province's confirmed diagnosis report on March 12 On the one hand, the number of infected people has increased significantly. On the one hand, it reflects that the spread of the new coronavirus in Omicron is hidden, highly contagious, and fast. It is difficult to detect in the early stage, and it is easy to form community transmission. On the other hand, it reflects that some regions are facing the situation of rapid increase of the epidemic situation, and the expansion capacity of medical resources is insufficient.
In the following week, Jilin Province added more than 1,500 new local confirmed cases per day, of which 3,076 new local confirmed cases were added throughout the day on March 14. Jilin Province issued a notice on March 14, in order to reduce the spillover and spread of the epidemic caused by inter-provincial and inter-regional flows, from that day onwards, inter-provincial and inter-regional movement of people in the province is prohibited.
In order to meet the demand for treatment, Jilin Province has recently built a large number of makeshift hospitals. As of March 16, Jilin Province has built 8 makeshift hospitals with a total of 11,488 beds. 2 shelters have been built, with a total of 662 isolation rooms. According to the latest requirements of the National Health Commission's "New Coronary Virus Pneumonia Diagnosis and Treatment Plan (Trial Version 9)", Jilin Province sent confirmed cases of severe cases to designated hospitals for treatment, and mild cases and asymptomatic infections to Fangcang shelter hospitals for treatment; close contact personnel Send to centralized isolation points and shelter isolation points for isolation, and the second-closest contact personnel should be isolated at home.
Since March 17, the total number of new infections reported in Jilin Province in a single day has declined. According to Jilin Daily, on March 19, Jilin Provincial Party Committee Secretary Jing Junhai presided over a meeting of the Provincial Epidemic Prevention and Control Leading Group and pointed out that currently, Jilin Province's epidemic prevention and control is still at a critical stage of battling against the virus.
There are multiple transmission chains in Shandong
The first infected person in this round of epidemic in Shandong Province also appeared on March 1. On the same day, in the routine nucleic acid test of key groups in the Huangdao District of Qingdao City, one case of positive infection of the new coronavirus was found, and was later diagnosed. After nucleic acid tests were conducted on close contacts of confirmed cases in Huangdao District, three family close contacts were also diagnosed.
On March 4, Qingdao had another confirmed case, in Huangdao District and Laixi City. The 2 confirmed cases reported in Huangdao District that day were close contacts of previously confirmed cases in Huangdao District, and the 3 confirmed cases reported in Laixi City were students of the Seventh Middle School in Laixi City. After the cluster epidemic occurred on campus, many students and teachers of Laixi No. 7 Middle School were diagnosed with the disease in the following days.
Subsequently, local epidemics occurred in many places in Shandong Province in a short period of time, showing a trend of scattered and local outbreaks. From March 11 to 12, the number of infected cases in Shandong Province reached a high level in this round of the epidemic. On the 11th, there were 400 new local asymptomatic infections, and 175 new confirmed cases on the 12th.
As of March 16, a total of 10 cities in Shandong Province have reported the epidemic, and there are multiple transmission chains. Among them, Qingdao, Weihai, Yantai, Zibo and other cities imported from outside the province, spilled over from the province, and locally transmitted epidemics are intertwined. Rizhao, Liaocheng, Linyi, Weifang and other cities are mainly imported, with fewer cases.
The outbreak in Qingdao is the most complicated, with 6 different chains of transmission found. The first is the 0301 epidemic in Huangdao District, the second is the 0307 epidemic in Huangdao District, the third is the Huangdao epidemic in Laixi, the fourth is the 0304 epidemic in Laixi City, Qingdao, the fifth is the 0313 epidemic in Licang District (imported epidemic from other provinces), and the sixth is Jimo. District 0313 Outbreak. The Qingdao epidemic also spilled over to Yantai, Rizhao and other places in the province.
There are two transmission chains of the epidemic in Weihai, and the infected people are mainly concentrated in a certain training class and a certain bath. The epidemic in Zibo spread from Zhoucun District to Huantai County and Wenchang Lake, and spilled over to Weifang City, Binzhou City and Linyi City. In the Texas epidemic, one transmission chain was mainly found. The cases were distributed in Yucheng and Pingyuan County, Dezhou, mainly for workers and close contacts of a certain enterprise. The epidemic spilled over to Liaocheng. The epidemic situation in Binzhou is relatively complicated, with both imported cases and spillover cases from the province, involving 5 districts and counties.
Except for Huangdao District, Qingdao, the source of infection in Laixi, Zibo, Weihai and other places in Qingdao is currently unclear. Qingdao City reported on March 6 that both Laixi and Huangdao viruses belonged to the Omicron variant, but ruled out the possibility of a connection between the two epidemics. The epidemic in Huangdao District was spread by small-scale family gatherings and gatherings of relatives and friends caused by an accidental infection. The cause of the epidemic was the infection of people who received items from other provinces with epidemic areas.
As of the afternoon of March 16, the prevention area of Laixi City, Qingdao has not detected any positive infected person for 3 consecutive days, and the social situation has been initially cleared. On March 18, in the new round of nucleic acid testing of key populations in Laixi City, Qingdao, no positive infected persons were found in the closed control area, control area and prevention area.
On March 19, the total number of infections in Shandong Province rose, with 380 new local asymptomatic infections in a single day.
Asymptomatic infections in Shanghai account for the vast majority
Before the discovery of the first local confirmed case in this round of the epidemic, Shanghai had seen sporadic local asymptomatic infections for several days.
On March 1, 1 new local confirmed case was reported in Putuo District, Shanghai. On the same day, Shiquan Community Cultural Activity Center, No. 33, Ningqiang Road, Shiquan Street, Putuo District, was listed as a medium-risk area. The next day, Shanghai reported 3 new local confirmed cases and 4 asymptomatic infections. The 7 newly infected persons belong to the same dance team as the confirmed cases reported on March 1, and they train together at the Shiquan Community Cultural Activity Center in Putuo District.
In the following days, the number of new local confirmed cases in Shanghai remained in single digits every day, while the number of asymptomatic infections in Japan increased day by day, exceeding 50 cases on March 5. On March 7, the Shanghai Epidemic Press Conference reported that the new coronavirus infected by the cases in the Putuo District was a variant of Omicron.
On March 12, the number of new asymptomatic infections in Shanghai exceeded 100 for the first time in a single day, and 41 new local confirmed cases. That night, Shanghai issued a notice advising citizens not to leave Shanghai unless it is necessary. Those who really need to leave Shanghai must hold a negative nucleic acid test report within 48 hours, and those who come to Shanghai and return to Shanghai must hold a negative nucleic acid test report within 48 hours before arriving in Shanghai.
After the number of new infections in a single day exceeded 100, Shanghai's epidemic prevention and control entered the "most critical stage". On March 13, major universities in Shanghai shifted from normalized epidemic prevention and control management to quasi-closed management. From March 14, all passenger stations in Shanghai have been suspended.
Zhang Wenhong, director of the National Medical Center for Infectious Diseases and leader of the Shanghai New Coronary Pneumonia Medical Treatment Expert Team, said on March 14 that Shanghai's precise prevention and control was launched due to the sudden occurrence of the spread of Omicron BA.2. Late, the virus is fast, and it is still in the phase of running with the virus, which is very difficult.
From March 1 to 14:00 on March 15, Shanghai has reported a total of 94 local confirmed cases and 861 asymptomatic infections, a total of 955 cases. At the epidemic prevention and control conference held in Shanghai on March 15, Gu Honghui, Deputy Secretary-General of the Shanghai Municipal Government and Director of the Office of the Municipal Leading Group for Epidemic Prevention and Control, introduced that since the outbreak of the epidemic, Shanghai has promoted epidemic prevention and control and economic and social development in accordance with the overall plan. requirements, and did not take measures such as "closing the city" and "shutting down". "There is no 'closed city' at the moment, and there is no need to 'close the city'."
Since the beginning of March, the total number of reported infections in Shanghai in a single day has continued to rise. On March 19, there were 492 new asymptomatic infections in Shanghai, and the number of new infections in a single day exceeded 500, setting a new high. In this round of the epidemic, the proportion of asymptomatic infected people in the total number of infected people in Shanghai is particularly prominent. Taking March 19 as an example, there were 492 asymptomatic infections in Shanghai, accounting for more than 90% of the total number of infections that day.
Wu Jinglei, director of the Shanghai Municipal Health Commission, previously introduced that from an international perspective, the number of asymptomatic patients with the new coronavirus has gradually increased recently, especially after Omicron is the main epidemic strain, asymptomatic infections can reach 80%- 90%, the proportion of asymptomatic infections in Shanghai is similar to that of other countries and regions.
The Guangdong epidemic is concentrated in Shenzhen, Dongguan, and Beijing, and there are multiple transmission chains.
Since March, the epidemic in Guangdong Province has mainly been concentrated in Shenzhen and Dongguan. Among them, the first case of this round of epidemic in Shenzhen can be traced back to February, and most of the new cases in Dongguan are asymptomatic infections.
On February 15, a confirmed case of new coronary pneumonia was found in the routine nucleic acid test of key personnel in Shenzhen. The case is a staff member of Minghua Building, Dongmen Street, Luohu District. Shenzhen announced on March 9 that the disease control department has completed the genetic sequencing of 194 cases since the "02.15" epidemic, and the results are all of the BA.2 evolutionary branch of the Omicron variant.
In early March, the number of new local confirmed cases in Shenzhen remained below 30 in a single day. On March 12, the epidemic situation in Shenzhen changed. There were 60 new local confirmed cases that day, and the number of asymptomatic infections also began to rise. The next day, Shenzhen upgraded the epidemic prevention and control measures in order to cooperate with the three rounds of nucleic acid testing for all employees in the city.
In the announcement on the evening of March 13, Shenzhen required all levels of government agencies and institutions in the city to work from home or become community volunteers, report to the community where they live, and participate fully Community epidemic prevention work and community service.
Shenzhen also requires that from March 14th to 20th, in addition to ensuring the city's operation and the transportation of goods and goods to the port, the city's buses and subways will be suspended. The city's community communities, urban villages, and industrial parks implement closed management. All personnel in the city will not leave Shenzhen unless necessary. If there are special needs, they will leave Shenzhen with a 24-hour nucleic acid negative certificate.
Since March 13, the daily number of new infections in Shenzhen has remained above 60. Huang Qiang, deputy secretary-general of the Shenzhen Municipal Government, said at a press conference on epidemic prevention and control on March 19 that the total number of new cases per day in the city is still in double digits. There is still a possibility of new positive cases.
According to the "Shenzhen Release" WeChat official account on March 20, the Shenzhen New Coronavirus Pneumonia Epidemic Prevention and Control Headquarters announced that since March 14, three rounds of nucleic acid testing for all employees have been completed in the city, basically realizing social The situation of epidemic prevention and control in the city is still severe, but it is generally controllable. The city's party and government organs, enterprises and institutions, production and operation units, etc. have resumed normal work order and production and operation, and public transportation and subways have fully resumed operation, ensuring the safety and stability of the industrial chain and supply chain, and ensuring that the normal production and life of the masses are stable and orderly.
Due to the wide spread of the epidemic across the country, since March, there have been cases of infected people imported from outside Beijing one after another, and there have been multiple independent chains.
Beijing announced on March 8 that from 0:00 on March 7 to 16:00 on March 8, Beijing added 7 new confirmed cases of local new coronary pneumonia, including 3 in Haidian District and 4 in Chaoyang District. Chaoyang District added 4 local confirmed cases, all of them family members in the same place of residence, who returned to Beijing from other places on February 28.
The laboratory of the Beijing Center for Disease Control and Prevention conducted whole genome sequencing on the sample of Infected Person 2 notified on March 8. The results showed that the virus belongs to the Omicron variant (BA.2 evolutionary branch), which is similar to Beijing's previous local and imported The homology of the Omikron case is low, and it is highly homologous to the Omikron case reported by other provinces on March 4. Based on the results of epidemiological investigation and gene sequencing, it is preliminarily believed that the source of infection of infected person 2 is another province.
On March 9, Beijing reported 5 new infections, including 4 confirmed cases and 1 asymptomatic infection; 3 in Haidian District and 2 in Chaoyang District. Beijing's epidemic prevention and control press conference on the same day reported that at present, there are new confirmed cases in Beijing with multiple channels and multiple transmission chains.
Since the first confirmed case of the current round of the epidemic on March 7, the number of newly confirmed cases in Beijing has been in the single digits every day, and there have been occasional sporadic asymptomatic infections. The epidemic prevention and control conference in Beijing on March 19 informed that it is necessary to further sort out and control the existing epidemic transmission chain, be highly vigilant of epidemic risks outside the field of vision, and keep an eye on new risk points and risk personnel to ensure that the epidemic is within reach. Control the scope and quickly achieve social zero.
Beijing News reporter Hu Xianhe
zhttps://news.sina.com.cn/o/2022-03-21/doc-imcwipih9604719.shtml
March 21, 2022 01:32 Beijing News Author: Hu Xianhe
According to the National Health and Health Commission and relevant local health and Health Commissions, since December last year, the global new crown epidemic has entered the fourth wave of epidemic peaks.
Since March, local epidemics have occurred in many places in my country, the number of infected people has increased rapidly, and the scope of infection has continued to expand.
On the first day of March, the first local confirmed cases of this round of the epidemic were found in Yanbian Prefecture in Jilin Province, Qingdao City in Shandong Province, and Putuo District in Shanghai on the same day. Subsequently, in Shandong, Guangdong, Hebei, Yunnan, Shanghai and other places, the number of asymptomatic infections increased rapidly, and the total number of infections continued to rise. From 119 daily cases on March 1 to 3,122 daily cases on March 12, it took only 11 days.
On March 12, 31 provinces (autonomous regions and municipalities directly under the Central Government) and the Xinjiang Production and Construction Corps reported that the number of newly confirmed local cases and asymptomatic infections both exceeded 1,000. Two days later, the country ushered in the peak of the number of infections. On March 14, there were 3,507 new local confirmed cases in a single day, of which Jilin Province accounted for 3,076 cases.
Most of the Omicron variants that swept across the country this time are BA.2 sub-branchs, which are more transmissible and hidden than previous virus strains. WHO estimates based on outbreak data in Denmark, this sub-variant is 30% more infectious than the original Omicron strain BA.1. The new crown virus is spreading invisibly, and the number of asymptomatic infections in many places across the country is large and accounts for a large proportion.
The Joint Prevention and Control Mechanism of the State Council held a press conference at 15:00 on March 19 to report that from March 1 to 18, more than 29,000 infected people had been reported in my country, affecting 28 provinces, of which one province in Jilin Province had reported more than 29,000 cases. 10,000 cases. Four other provinces have cumulatively reported more than 1,000 cases, and 10 provinces have cumulatively reported between 100 and 1,000 cases.
On March 18, the State Council Information Office held a press conference. Wang Hesheng, deputy director of the National Health and Health Commission and director of the National Centers for Disease Control and Prevention, said that the recent analysis of experts organized by the National Health and Health Commission believes that the current round of the global epidemic is a high epidemic, and it will not be in the near future. will end. my country will continue to face a situation of epidemic prevention and control dominated by Omicron virus strains in many places at the same time, and the situation of prevention and control is becoming increasingly severe and complicated.
The cumulative number of infected people in Jilin exceeds 10,000
The first infected person in this round of epidemic in Jilin Province appeared in Yanbian Korean Autonomous Prefecture.
On March 1, Yanbian prefecture informed that on February 28 in Hunchun City of the prefecture, one person was found to have a positive nucleic acid test sample among the "exhaustive inspection" crowd, and was later diagnosed. Three colleagues of the infected person were subsequently diagnosed. On the same day, 4 new local confirmed cases were added in Jilin Province. In the next few days, Jilin City, Changchun City, Songyuan City and other places in Jilin Province also reported confirmed cases one after another. The cumulative number of confirmed cases in Jilin City and Changchun City soon surpassed that of Yanbian Prefecture, and these two cities subsequently became the areas with the largest number of cases in this round of epidemic in Jilin Province.
On March 9, Jilin City completed the genetic sequencing of the new crown pneumonia epidemic. The genetic sequence of the virus in this epidemic is the evolutionary branch of Omicron BA.2. Changchun City announced on the same day that the confirmed cases in the city were highly homologous to the virus sequencing results in Jilin City, and were presumed to be the same transmission chain.
In this round of the epidemic, the campus epidemic in Jilin Province is prominent, and the number of confirmed cases in Jilin Agricultural Science and Technology College is relatively large.
Before March 12, the daily number of new local cases and asymptomatic infections in Jilin Province increased steadily. Until March 13, the development of the epidemic situation in Jilin Province began to attract widespread attention. On the same day, the province's new local confirmed cases exceeded 1,000 for the first time on the 12th, and the number of new asymptomatic infections also reached 744.
At the press conference on epidemic prevention and control in Jilin Province on March 13, Zhang Yan, deputy director of the Jilin Provincial Health Commission and head of the epidemic prevention and control team of the Provincial Epidemic Prevention and Control Leading Group Office, introduced that the province's confirmed diagnosis report on March 12 On the one hand, the number of infected people has increased significantly. On the one hand, it reflects that the spread of the new coronavirus in Omicron is hidden, highly contagious, and fast. It is difficult to detect in the early stage, and it is easy to form community transmission. On the other hand, it reflects that some regions are facing the situation of rapid increase of the epidemic situation, and the expansion capacity of medical resources is insufficient.
In the following week, Jilin Province added more than 1,500 new local confirmed cases per day, of which 3,076 new local confirmed cases were added throughout the day on March 14. Jilin Province issued a notice on March 14, in order to reduce the spillover and spread of the epidemic caused by inter-provincial and inter-regional flows, from that day onwards, inter-provincial and inter-regional movement of people in the province is prohibited.
In order to meet the demand for treatment, Jilin Province has recently built a large number of makeshift hospitals. As of March 16, Jilin Province has built 8 makeshift hospitals with a total of 11,488 beds. 2 shelters have been built, with a total of 662 isolation rooms. According to the latest requirements of the National Health Commission's "New Coronary Virus Pneumonia Diagnosis and Treatment Plan (Trial Version 9)", Jilin Province sent confirmed cases of severe cases to designated hospitals for treatment, and mild cases and asymptomatic infections to Fangcang shelter hospitals for treatment; close contact personnel Send to centralized isolation points and shelter isolation points for isolation, and the second-closest contact personnel should be isolated at home.
Since March 17, the total number of new infections reported in Jilin Province in a single day has declined. According to Jilin Daily, on March 19, Jilin Provincial Party Committee Secretary Jing Junhai presided over a meeting of the Provincial Epidemic Prevention and Control Leading Group and pointed out that currently, Jilin Province's epidemic prevention and control is still at a critical stage of battling against the virus.
There are multiple transmission chains in Shandong
The first infected person in this round of epidemic in Shandong Province also appeared on March 1. On the same day, in the routine nucleic acid test of key groups in the Huangdao District of Qingdao City, one case of positive infection of the new coronavirus was found, and was later diagnosed. After nucleic acid tests were conducted on close contacts of confirmed cases in Huangdao District, three family close contacts were also diagnosed.
On March 4, Qingdao had another confirmed case, in Huangdao District and Laixi City. The 2 confirmed cases reported in Huangdao District that day were close contacts of previously confirmed cases in Huangdao District, and the 3 confirmed cases reported in Laixi City were students of the Seventh Middle School in Laixi City. After the cluster epidemic occurred on campus, many students and teachers of Laixi No. 7 Middle School were diagnosed with the disease in the following days.
Subsequently, local epidemics occurred in many places in Shandong Province in a short period of time, showing a trend of scattered and local outbreaks. From March 11 to 12, the number of infected cases in Shandong Province reached a high level in this round of the epidemic. On the 11th, there were 400 new local asymptomatic infections, and 175 new confirmed cases on the 12th.
As of March 16, a total of 10 cities in Shandong Province have reported the epidemic, and there are multiple transmission chains. Among them, Qingdao, Weihai, Yantai, Zibo and other cities imported from outside the province, spilled over from the province, and locally transmitted epidemics are intertwined. Rizhao, Liaocheng, Linyi, Weifang and other cities are mainly imported, with fewer cases.
The outbreak in Qingdao is the most complicated, with 6 different chains of transmission found. The first is the 0301 epidemic in Huangdao District, the second is the 0307 epidemic in Huangdao District, the third is the Huangdao epidemic in Laixi, the fourth is the 0304 epidemic in Laixi City, Qingdao, the fifth is the 0313 epidemic in Licang District (imported epidemic from other provinces), and the sixth is Jimo. District 0313 Outbreak. The Qingdao epidemic also spilled over to Yantai, Rizhao and other places in the province.
There are two transmission chains of the epidemic in Weihai, and the infected people are mainly concentrated in a certain training class and a certain bath. The epidemic in Zibo spread from Zhoucun District to Huantai County and Wenchang Lake, and spilled over to Weifang City, Binzhou City and Linyi City. In the Texas epidemic, one transmission chain was mainly found. The cases were distributed in Yucheng and Pingyuan County, Dezhou, mainly for workers and close contacts of a certain enterprise. The epidemic spilled over to Liaocheng. The epidemic situation in Binzhou is relatively complicated, with both imported cases and spillover cases from the province, involving 5 districts and counties.
Except for Huangdao District, Qingdao, the source of infection in Laixi, Zibo, Weihai and other places in Qingdao is currently unclear. Qingdao City reported on March 6 that both Laixi and Huangdao viruses belonged to the Omicron variant, but ruled out the possibility of a connection between the two epidemics. The epidemic in Huangdao District was spread by small-scale family gatherings and gatherings of relatives and friends caused by an accidental infection. The cause of the epidemic was the infection of people who received items from other provinces with epidemic areas.
As of the afternoon of March 16, the prevention area of Laixi City, Qingdao has not detected any positive infected person for 3 consecutive days, and the social situation has been initially cleared. On March 18, in the new round of nucleic acid testing of key populations in Laixi City, Qingdao, no positive infected persons were found in the closed control area, control area and prevention area.
On March 19, the total number of infections in Shandong Province rose, with 380 new local asymptomatic infections in a single day.
Asymptomatic infections in Shanghai account for the vast majority
Before the discovery of the first local confirmed case in this round of the epidemic, Shanghai had seen sporadic local asymptomatic infections for several days.
On March 1, 1 new local confirmed case was reported in Putuo District, Shanghai. On the same day, Shiquan Community Cultural Activity Center, No. 33, Ningqiang Road, Shiquan Street, Putuo District, was listed as a medium-risk area. The next day, Shanghai reported 3 new local confirmed cases and 4 asymptomatic infections. The 7 newly infected persons belong to the same dance team as the confirmed cases reported on March 1, and they train together at the Shiquan Community Cultural Activity Center in Putuo District.
In the following days, the number of new local confirmed cases in Shanghai remained in single digits every day, while the number of asymptomatic infections in Japan increased day by day, exceeding 50 cases on March 5. On March 7, the Shanghai Epidemic Press Conference reported that the new coronavirus infected by the cases in the Putuo District was a variant of Omicron.
On March 12, the number of new asymptomatic infections in Shanghai exceeded 100 for the first time in a single day, and 41 new local confirmed cases. That night, Shanghai issued a notice advising citizens not to leave Shanghai unless it is necessary. Those who really need to leave Shanghai must hold a negative nucleic acid test report within 48 hours, and those who come to Shanghai and return to Shanghai must hold a negative nucleic acid test report within 48 hours before arriving in Shanghai.
After the number of new infections in a single day exceeded 100, Shanghai's epidemic prevention and control entered the "most critical stage". On March 13, major universities in Shanghai shifted from normalized epidemic prevention and control management to quasi-closed management. From March 14, all passenger stations in Shanghai have been suspended.
Zhang Wenhong, director of the National Medical Center for Infectious Diseases and leader of the Shanghai New Coronary Pneumonia Medical Treatment Expert Team, said on March 14 that Shanghai's precise prevention and control was launched due to the sudden occurrence of the spread of Omicron BA.2. Late, the virus is fast, and it is still in the phase of running with the virus, which is very difficult.
From March 1 to 14:00 on March 15, Shanghai has reported a total of 94 local confirmed cases and 861 asymptomatic infections, a total of 955 cases. At the epidemic prevention and control conference held in Shanghai on March 15, Gu Honghui, Deputy Secretary-General of the Shanghai Municipal Government and Director of the Office of the Municipal Leading Group for Epidemic Prevention and Control, introduced that since the outbreak of the epidemic, Shanghai has promoted epidemic prevention and control and economic and social development in accordance with the overall plan. requirements, and did not take measures such as "closing the city" and "shutting down". "There is no 'closed city' at the moment, and there is no need to 'close the city'."
Since the beginning of March, the total number of reported infections in Shanghai in a single day has continued to rise. On March 19, there were 492 new asymptomatic infections in Shanghai, and the number of new infections in a single day exceeded 500, setting a new high. In this round of the epidemic, the proportion of asymptomatic infected people in the total number of infected people in Shanghai is particularly prominent. Taking March 19 as an example, there were 492 asymptomatic infections in Shanghai, accounting for more than 90% of the total number of infections that day.
Wu Jinglei, director of the Shanghai Municipal Health Commission, previously introduced that from an international perspective, the number of asymptomatic patients with the new coronavirus has gradually increased recently, especially after Omicron is the main epidemic strain, asymptomatic infections can reach 80%- 90%, the proportion of asymptomatic infections in Shanghai is similar to that of other countries and regions.
The Guangdong epidemic is concentrated in Shenzhen, Dongguan, and Beijing, and there are multiple transmission chains.
Since March, the epidemic in Guangdong Province has mainly been concentrated in Shenzhen and Dongguan. Among them, the first case of this round of epidemic in Shenzhen can be traced back to February, and most of the new cases in Dongguan are asymptomatic infections.
On February 15, a confirmed case of new coronary pneumonia was found in the routine nucleic acid test of key personnel in Shenzhen. The case is a staff member of Minghua Building, Dongmen Street, Luohu District. Shenzhen announced on March 9 that the disease control department has completed the genetic sequencing of 194 cases since the "02.15" epidemic, and the results are all of the BA.2 evolutionary branch of the Omicron variant.
In early March, the number of new local confirmed cases in Shenzhen remained below 30 in a single day. On March 12, the epidemic situation in Shenzhen changed. There were 60 new local confirmed cases that day, and the number of asymptomatic infections also began to rise. The next day, Shenzhen upgraded the epidemic prevention and control measures in order to cooperate with the three rounds of nucleic acid testing for all employees in the city.
In the announcement on the evening of March 13, Shenzhen required all levels of government agencies and institutions in the city to work from home or become community volunteers, report to the community where they live, and participate fully Community epidemic prevention work and community service.
Shenzhen also requires that from March 14th to 20th, in addition to ensuring the city's operation and the transportation of goods and goods to the port, the city's buses and subways will be suspended. The city's community communities, urban villages, and industrial parks implement closed management. All personnel in the city will not leave Shenzhen unless necessary. If there are special needs, they will leave Shenzhen with a 24-hour nucleic acid negative certificate.
Since March 13, the daily number of new infections in Shenzhen has remained above 60. Huang Qiang, deputy secretary-general of the Shenzhen Municipal Government, said at a press conference on epidemic prevention and control on March 19 that the total number of new cases per day in the city is still in double digits. There is still a possibility of new positive cases.
According to the "Shenzhen Release" WeChat official account on March 20, the Shenzhen New Coronavirus Pneumonia Epidemic Prevention and Control Headquarters announced that since March 14, three rounds of nucleic acid testing for all employees have been completed in the city, basically realizing social The situation of epidemic prevention and control in the city is still severe, but it is generally controllable. The city's party and government organs, enterprises and institutions, production and operation units, etc. have resumed normal work order and production and operation, and public transportation and subways have fully resumed operation, ensuring the safety and stability of the industrial chain and supply chain, and ensuring that the normal production and life of the masses are stable and orderly.
Due to the wide spread of the epidemic across the country, since March, there have been cases of infected people imported from outside Beijing one after another, and there have been multiple independent chains.
Beijing announced on March 8 that from 0:00 on March 7 to 16:00 on March 8, Beijing added 7 new confirmed cases of local new coronary pneumonia, including 3 in Haidian District and 4 in Chaoyang District. Chaoyang District added 4 local confirmed cases, all of them family members in the same place of residence, who returned to Beijing from other places on February 28.
The laboratory of the Beijing Center for Disease Control and Prevention conducted whole genome sequencing on the sample of Infected Person 2 notified on March 8. The results showed that the virus belongs to the Omicron variant (BA.2 evolutionary branch), which is similar to Beijing's previous local and imported The homology of the Omikron case is low, and it is highly homologous to the Omikron case reported by other provinces on March 4. Based on the results of epidemiological investigation and gene sequencing, it is preliminarily believed that the source of infection of infected person 2 is another province.
On March 9, Beijing reported 5 new infections, including 4 confirmed cases and 1 asymptomatic infection; 3 in Haidian District and 2 in Chaoyang District. Beijing's epidemic prevention and control press conference on the same day reported that at present, there are new confirmed cases in Beijing with multiple channels and multiple transmission chains.
Since the first confirmed case of the current round of the epidemic on March 7, the number of newly confirmed cases in Beijing has been in the single digits every day, and there have been occasional sporadic asymptomatic infections. The epidemic prevention and control conference in Beijing on March 19 informed that it is necessary to further sort out and control the existing epidemic transmission chain, be highly vigilant of epidemic risks outside the field of vision, and keep an eye on new risk points and risk personnel to ensure that the epidemic is within reach. Control the scope and quickly achieve social zero.
Beijing News reporter Hu Xianhe
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