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Initially it is determined that the origin of the epidemic in Dalian is spreading rapidly by Russian cargo ships.
Xinhua News Agency 2021-01-04
As of 12 p.m. on January 2, 2021, a total of 33 cases of confirmed cases and asymptomatic Jin-related infections have accumulated, including 21 confirmed cases and 12 asymptomatic infections.
There are 33 confirmed cases and asymptomatic infections related to one case in a commercial building
According to the Xinhua News Agency, Dalian City Health Commission Deputy Director Zhao Lian told a press conference on the prevention and control of the epidemic in Dalian on the 3rd that it was preliminarily determined that the Local epidemic in Dalian originated from imported cold chain products contaminated by the new corona virus. Most of the cases were caused by longshoremen who became infected and spread due to transporting bulk goods that tested positive for the new coronavirus on a Russian freighter.
Zhao Lian said that the national, Liaoning Province and Dalian CDC conducted whole genome sequencing analysis of confirmed cases of the epidemic, asymptomatic infections and related environmental and burden samples. The genome of the virus is similar to previous new coronaviruses in Dalian. Genome sequence comparisons are all from different sources, which excludes the continued spread of the new local coronavirus; This epidemic virus conforms to the characteristics of the L2 branch of the European L genotype family, and the results support that the source of transmission comes from abroad. The epidemic genome and the 4 products of the cold chain The virus genome is very homologous to the virus strain circulating in Russia in November and has a strong genetic association. And the entire genome sequence has no genetic association with imported cases reported in China and domestic domestic cases, and it is not the continuous spread of the domestic epidemic in recent months; it is related to the international GISAID database, the local epidemics of national provinces and cities and the new imported corona virus. Compared to the gene bank, no highly homologous sequences are seen, which is a new entry.
Zhao Lian said that it was preliminarily determined that the source of the infection was caused by five longshoremen (cases 1-5). According to a preliminary analysis based on existing evidence, the vast majority of cases in this epidemic were caused by dock workers transporting bulk goods that tested positive for the new corona virus on a Russian freighter. Later, through the activities of a case, it spread to the Jinrun Garden community, causing a family cluster epidemic; Another case spread to the Jinzuo commercial building, causing infections to staff and customers in the commercial building, and later to the families of these people. And close contacts.
Zhao Lian said that the Dalian epidemic spreads rapidly, involves many scenes, and has strong transmission power. A total of 65 cases are related to the Jinzuo Commercial Building. One case, Jin (case 35), participated in a family gathering of 11 people when he was not ill. All other people were later infected. As of 12 p.m. on January 2, 2021, a total of 33 cases of confirmed cases and asymptomatic Jin-related infections have accumulated, including 21 confirmed cases and 12 asymptomatic infections.
Publisher: Zhenglong
