China News Service, Dalian, January 11 (Reporter Yang Yi) Zhao Lian, deputy director of the Dalian Municipal Health Commission, said at a press conference on epidemic prevention and control held by the local government on the 11th that through the current round of confirmed cases and asymptomatic infections The whole genome sequencing analysis of the virus in the samples of the authors and related environment and cargo found that the results support that the source of infection is from abroad. It is preliminarily determined that the Dalian epidemic originated from imported cold chain products that contaminated the new crown virus.
Zhao Lian said that the virus genome is different from the previous whole genome sequence alignment of the new coronavirus in Dalian, which excludes the continued spread of the local new coronavirus; and there is no genetic association with the previously reported imported cases and domestic cases in China , Is a new input.
Zhao Lian said that based on the preliminary analysis based on the existing evidence, the vast majority of cases in this epidemic were caused by the infection of Dalian Port dock workers who were carrying bulk goods positive for the new crown virus on Russian freighters. In the Jinzuo commercial building, it caused the infection of merchants and customers, and caused subsequent transmission through the infected merchants and customers.
At present, 83 cases and asymptomatic infections have all identified the source of infection.
Epidemiological investigations show that five Dalian Haohan labor service company dock workers (cases 1-5) transported the frozen bulk cargo at the bottom of the Russian cargo hold from December 2 to December 9. The packaging caused infection.
Among them, cases 1-4 also infected 2 heads of moving households and 2 couples of restaurant owners through helping people to move and dinner.
Li, a dispatcher of the terminal labor service company, was infected because he had been in contact with the above-mentioned dock workers at Dalian Haohan Labor Service Company many times between December 11 and 15.
From 0:00 to 24:00 on January 10, there were no new locally confirmed cases and local asymptomatic infections in Dalian.
At present, the city has reported a total of 51 confirmed cases of new coronary pneumonia and 32 local asymptomatic infections.
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