Recently, an epidemic broke out in Xi'an, and a total of 18 infected people have been found, and the source of the infection is still unclear.
html On July 5, Zhang Yi, director of the Prevention and Control Institute of the Shaanxi Provincial Center for Disease Control and Prevention, disclosed in an interview with reporters that after whole-genome sequencing , the results were determined to be the Omikron BA.5 variant, which has stronger immunity. Escape ability.Chang'an Street Governor noted that my country discovered its first case of BA.5 infection imported from abroad in May.
Zhang Yi was interviewed
html On July 2, Xi'an found one positive infected person during the nucleic acid screening of key populations, and five more people who were initially screened positive were found in the follow-up influenza investigation .As of 24:00 on July 4, a total of 10 confirmed cases and 8 asymptomatic infections had been found. Among them, the activity trajectories of many people are related to the Shaanxi Chaohui Renewable Resources Trading and Distribution Market (Dafengshang Recycling Art Museum).
Xi'an COVID-19 Epidemic Prevention and Control Headquarters has decided to adjust Baiyangzhai Village, Dengjiapo Street, Yanta District to a high-risk area starting from 12:00 on July 5. After the adjustment, the city has 5 high-risk areas, 3 medium-risk areas, and 4 low-risk areas.
According to western.com ·Shaanxi Toutiao, since the outbreak of the current epidemic in Xi'an, Shaanxi Provincial Center for Disease Control and Prevention immediately conducted whole-genome sequencing on the nucleic acid samples of the positive infections, and the results were determined to be the Omicron BA.5 mutation. strain.
Zhang Yi, director of the Prevention and Control Institute of the Shaanxi Provincial Center for Disease Control and Prevention, said that the Omicron BA.5 mutant strain is more transmissible than the previously popular BA2.2, spreads faster, and has a stronger immune evasion ability.
Xi'an nucleic acid testing site pictures from "Sanqin Metropolis Daily"
It is worth mentioning that at the end of May, the Chinese Center for Disease Control and Prevention released an English weekly report stating that China has discovered the first case of the new coronavirus imported from abroad Omic Rong mutant strain BA.5 infection. The weekly report shows that the case departed from Uganda on April 25, transited through Amsterdam and Seoul, South Korea, landed in Shanghai and was diagnosed, and was discharged from the hospital on May 12. Genome sequencing results showed that the patient was infected with the BA.5 variant. The gene sequence of
BA.5 was first uploaded on March 15, 2022, from the nasopharyngeal, oropharyngeal swab of a patient collected on February 25 in South Africa.
In addition, on June 29, World Health Organization (WHO) stated in the latest global new crown epidemic weekly report that global new crown cases increased by 18% in the past week, reaching the highest level since April. The main increase was The cause is infections caused by the more contagious Omicron BA.4 and BA.5 variants.
As of June 19, The global novel coronavirus gene sequencing samples obtained by WHO show that the BA.4 and BA.5 mutant strains together account for 55% of all samples, and have replaced the previous BA.2 Become a major global strain.
The WHO stated that the proportion of BA.4 and BA.5 mutant strains is still rising. The rise in both is linked to the fact that they contain mutations that enhance their infectivity. Early indications are that these mutations increase the strain's immune evasion ability, meaning people who have been infected are more likely to be infected again, and people who have received the new coronavirus vaccine are also more likely to develop breakthrough infections.
