China News Service, Shenzhen, May 23 (Zheng Xiaohong, Ma Xiru) The Information Office of the Shenzhen Municipal People’s Government held a press conference on epidemic prevention and control on the afternoon of the 23rd, stating that the city had lined up 4 asymptomatic infections. According to epidemiological investigations, The results of nucleic acid testing and viral genetic testing are preliminarily inferred to be related to international freighter operations, and are an epidemic of new coronavirus infection related to overseas imports.
According to Tao Yongxin, Deputy Mayor of Shenzhen, on May 21, a new asymptomatic infection of the new crown virus was added in Yantian District of Shenzhen: Mu Mou, male, 44 years old, a container ship tally.
On May 22, three new asymptomatic infections of the new crown virus were added in Yantian District, namely: Xu, male, 46 years old, working as a rope puller; Zeng, male, 50 years old, working in science and technology (with crew Communication); Zhang, male, 49 years old, is a staff member at the bottom of the tower.
The above four workplaces are all in the Yantian Gangxi operation area.
At present, all 4 persons are treated in isolation at the Third Shenzhen Hospital and are in stable condition.
Preliminary investigation revealed that Mu, Xu, Zeng, and Zhang had all participated in the operation of the same international freighter on May 17. The daily activity area for 4 people in the past 14 days was near the working port and residential area.
Tao Yongxin said that after the outbreak, Shenzhen's relevant departments implemented strict control measures on key locations such as work sites, residences, dining places, and transportation involved in the four cases initially determined, and no further community transmission has been caused for the time being.
Tao Yongxin said that at present, a total of 173 close contacts have been preliminarily judged. Shenzhen has carried out investigation and management of close contacts, sub-close contacts, key groups, and general contacts.
The nucleic acid test results of 62457 people showed that, except for the positive results of the new coronavirus nucleic acid test of the above four people, no other positive cases have been reported.
In addition, 765 environmental samples were collected for testing, of which 3 samples from the residences of Mu and Xu tested positive, 94 results are pending, and the rest are all negative.
From May 21st to 22nd, the Shenzhen Centers for Disease Control and Prevention conducted a genome sequence determination of the nasopharyngeal swab samples of Mu and Xu. The two have 100% homology, and they belong to the new coronavirus mutant strains that appeared in the UK. .
The strain is prevalent in many countries outside the country, and Shenzhen was only detected in positive persons entering the country, and no prevalence in the community was found.
The genetic sequencing results of the other two cases are yet to be released.
The four cases had a common history of exposure to overseas freighter workplaces, and none of them had any recent contact with persons with fever or cough symptoms, no history of eating game, no contact with frozen foods, and no contact with persons who came to Shenzhen from medium- and high-risk areas in China.
Based on genome sequence analysis and epidemiological investigation, it is speculated that these two cases are from the same source of infection or the same chain of transmission.
Wu Hongyan, director of the Shenzhen Municipal Health Commission, said that as of May 22, the city of Shenzhen had received 10.91014 million doses of the new crown vaccine and 7.798 million people, accounting for 57.34% of the permanent population aged 18 to 59. Among them, the task of vaccinating high-risk populations has been fully completed. , The population immune barrier is gradually being formed.
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