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On November 24, at the 155th press conference on the prevention and control of the new coronavirus pneumonia epidemic in Tianjin, Zhang Ying, deputy director of the Tianjin Municipal Center for Disease Control and Prevention, introduced that the hailian cold storage and the epidemic situation in Guanhaixuan are not related, and are two independent diseases. The basis of judgment is not simply from the geographical location and the connection of people, but more importantly, the genes of the virus.
Hailian cold storage after rough sequencing, its viral gene belongs to l genotype European family 2 branch, Guan Haixuan belongs to l genotype European family 1 branch, their upper edge is the same, just like the family, is the brother two people are two different branches, from the gene sequencing can judge that the two outbreaks are completely unrelated.
There are also different transmission patterns, Hailian cold storage has not yet occurred further human-to-human transmission, but only from thing to person. From the end of the period from the object to the person, there was a situation of infection of other residents in the community, which is also the difference between the two epidemics. (CCTV reporter Sun Qiang, Wang Xiaopei, Wang Jinglei, Han Ruxu, Wang Zixin)
(Edited by Han Yonghui)