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Omicron BA.5 mutant strain appeared in 7 cities including Beijing and Shanghai
July 13, 2022 15:53Beijing Youth Daily Author: Beijing Youth Daily
141
On July 13, Zhuhai City, Guangdong held a press conference on epidemic prevention and control. There were 27 positive infections, including 13 confirmed cases and 14 asymptomatic infections, all of which were related to Hailian Kindergarten and were in the same transmission chain. Gene sequencing showed that the new coronavirus gene in this round of epidemic belongs to the evolutionary branch of Omicron BA.5.1. This clade is more contagious and spreads faster than previous strains of the Omicron virus.
A reporter from the Beiqing Daily noted that this is the seventh city in the mainland to report the occurrence of the Omicron BA.5 mutant strain since July 5.
On the afternoon of July 5th, the Information Office of Xi'an Municipal Government of Shaanxi Province held a press conference. At the meeting, it was introduced that the virus strains infected by the epidemic in Xi'an were all Omicron variant BA.5.2 branches, and the traceability of the epidemic is still in full swing. processing.
Just one day later, Pang Xinghuo, deputy director of the Beijing Center for Disease Control and Prevention and member of the National Expert Group on Novel Coronavirus Pneumonia, introduced at the Beijing Epidemic Press Conference held on July 6 that the laboratory of the Beijing Center for Disease Control and Prevention responded to the outbreak on July 5. Gene sequencing was performed on the specimens of the notified infected persons 1 to 3, and the results showed that the viruses belonged to the BA.5.2 branch of the Omicron variant strain. The results of gene sequence comparison showed that the three infected persons had low sequence homology with existing and past local cases in Beijing and imported cases in the city, and they belonged to different transmission chains. Based on the results of epidemiological investigation and gene sequencing, it is preliminarily considered that this epidemic is a local clustered epidemic caused by imported cases.
On July 7, the Information Office of the Dalian Municipal People's Government of Liaoning Province issued a document saying that the director of the Dalian Center for Disease Control and Prevention stated that on July 3, 1 case of asymptomatic infection was found in Shahekou District, Dalian City, among those returning from the centralized isolation and returning from different places. The gene sequencing of the virus is the Omicron BA.5 mutant strain, which is the first discovery in Dalian.
Experts from the Tianjin Center for Disease Control and Prevention said in response to a media interview on July 8 that the recent positive local infections in Tianjin were all imported related cases, and the gene sequencing results were all Omicron variants, but they were three different evolutionary strains. branch. On June 26, the related cases of the Shanghai closed loop management personnel were the BA.5.2.1 evolutionary branch of the Omicron variant; on July 5, the Shanghai entry and returnees and related cases were the BA.2 evolutionary branch; the entry received on July 6 The closed-loop manager-associated cases are clade BA.4. The pressure of foreign defense input in Tianjin continues to increase, and the epidemic situation is still severe. There is a complex situation of coexistence of multiple chains and multiple evolutionary branches, and prevention and control are difficult.
The press conference on epidemic prevention and control held in Shanghai on July 10 reported that the virus infected by a socially infected person reported in Pudong New Area on July 8 was Omicron BA.5.2.1 mutant strain, which was an overseas Entry-linked infected persons.
Chengyang District, Qingdao, Shandong held a press conference on July 11 to report that after the outbreak, the gene sequencing showed that it was the new coronavirus Omicron variant BA.5.2.1, which was diagnosed with the quarantine hotel on July 7. The new coronavirus gene sequencing results of imported cases from abroad are highly homologous.
With the report on July 13 in Zhuhai City, Guangdong that the virus gene of the local infected person belongs to the evolutionary branch of Omicron BA.5.1, 7 cities in the mainland area have reported the occurrence of the mutant BA.5 strain of Omicron within 8 days , including three municipalities directly under the Central Government: Beijing, Shanghai, and Tianjin.
zhttps://news.sina.com.cn/c/2022-07-13/doc-imizirav3221775.shtml
July 13, 2022 15:53Beijing Youth Daily Author: Beijing Youth Daily
141
On July 13, Zhuhai City, Guangdong held a press conference on epidemic prevention and control. There were 27 positive infections, including 13 confirmed cases and 14 asymptomatic infections, all of which were related to Hailian Kindergarten and were in the same transmission chain. Gene sequencing showed that the new coronavirus gene in this round of epidemic belongs to the evolutionary branch of Omicron BA.5.1. This clade is more contagious and spreads faster than previous strains of the Omicron virus.
A reporter from the Beiqing Daily noted that this is the seventh city in the mainland to report the occurrence of the Omicron BA.5 mutant strain since July 5.
On the afternoon of July 5th, the Information Office of Xi'an Municipal Government of Shaanxi Province held a press conference. At the meeting, it was introduced that the virus strains infected by the epidemic in Xi'an were all Omicron variant BA.5.2 branches, and the traceability of the epidemic is still in full swing. processing.
Just one day later, Pang Xinghuo, deputy director of the Beijing Center for Disease Control and Prevention and member of the National Expert Group on Novel Coronavirus Pneumonia, introduced at the Beijing Epidemic Press Conference held on July 6 that the laboratory of the Beijing Center for Disease Control and Prevention responded to the outbreak on July 5. Gene sequencing was performed on the specimens of the notified infected persons 1 to 3, and the results showed that the viruses belonged to the BA.5.2 branch of the Omicron variant strain. The results of gene sequence comparison showed that the three infected persons had low sequence homology with existing and past local cases in Beijing and imported cases in the city, and they belonged to different transmission chains. Based on the results of epidemiological investigation and gene sequencing, it is preliminarily considered that this epidemic is a local clustered epidemic caused by imported cases.
On July 7, the Information Office of the Dalian Municipal People's Government of Liaoning Province issued a document saying that the director of the Dalian Center for Disease Control and Prevention stated that on July 3, 1 case of asymptomatic infection was found in Shahekou District, Dalian City, among those returning from the centralized isolation and returning from different places. The gene sequencing of the virus is the Omicron BA.5 mutant strain, which is the first discovery in Dalian.
Experts from the Tianjin Center for Disease Control and Prevention said in response to a media interview on July 8 that the recent positive local infections in Tianjin were all imported related cases, and the gene sequencing results were all Omicron variants, but they were three different evolutionary strains. branch. On June 26, the related cases of the Shanghai closed loop management personnel were the BA.5.2.1 evolutionary branch of the Omicron variant; on July 5, the Shanghai entry and returnees and related cases were the BA.2 evolutionary branch; the entry received on July 6 The closed-loop manager-associated cases are clade BA.4. The pressure of foreign defense input in Tianjin continues to increase, and the epidemic situation is still severe. There is a complex situation of coexistence of multiple chains and multiple evolutionary branches, and prevention and control are difficult.
The press conference on epidemic prevention and control held in Shanghai on July 10 reported that the virus infected by a socially infected person reported in Pudong New Area on July 8 was Omicron BA.5.2.1 mutant strain, which was an overseas Entry-linked infected persons.
Chengyang District, Qingdao, Shandong held a press conference on July 11 to report that after the outbreak, the gene sequencing showed that it was the new coronavirus Omicron variant BA.5.2.1, which was diagnosed with the quarantine hotel on July 7. The new coronavirus gene sequencing results of imported cases from abroad are highly homologous.
With the report on July 13 in Zhuhai City, Guangdong that the virus gene of the local infected person belongs to the evolutionary branch of Omicron BA.5.1, 7 cities in the mainland area have reported the occurrence of the mutant BA.5 strain of Omicron within 8 days , including three municipalities directly under the Central Government: Beijing, Shanghai, and Tianjin.
zhttps://news.sina.com.cn/c/2022-07-13/doc-imizirav3221775.shtml