Chengdu City, Sichuan Province announced the source of the local epidemic: highly homologous to the imported virus sequence outside Nepal

　　On December 31, the Sichuan Chengdu Municipal Health Commission announced the source of infection of the “Chengdu Local Epidemic”, which was a new coronary pneumonia case imported from outside Nepal. The first case may have been infected due to contact with garbage in the isolation point, and then direct interpersonal contact triggered follow-up spread.

　　Details are as follows:

　　According to the sequencing and comparison of the whole genome sequence of viral nucleic acid jointly carried out by the Provincial and Municipal Centers for Disease Control and Prevention and the West China Hospital of Sichuan University, the virus genotype of this local case is L-type European family branch 2.3, which is the same as the virus gene sequence of the imported case from Nepal in November Highly homologous.

　　According to a traceability investigation, a group of Nepalese immigrants entered an isolation point in Taiping Village, Pidu District as close contacts on November 9 for centralized isolation and medical observation.

On November 16th and November 28th, 5 nucleic acid-positive cases were screened out in this group.

During this period, some staff at the isolation point did not put the garbage in the designated storage point according to the regulations.

At the same time, garbage was picked up in the first case.

　　Among the 14 cases of this epidemic, there are 3 couples, and another 5 are relatives, friends or neighbors of the case, and 2 are friends with the aforementioned cases and often play mahjong together, and 1 has face-to-face contact with the case. , There are clear epidemiological associations between the cases, showing obvious spatial clustering.

　　To sum up, the source of this epidemic is a case of new coronary pneumonia imported from outside Nepal. The first case may be infected by contact with garbage in the isolation point, and then direct interpersonal contact caused subsequent transmission.

　　The local area has strictly carried out terminal disinfection of patients’ homes and activity sites, carried out special inspections and rectifications on the prevention and control of key institutions and key populations, and strengthened key areas such as isolation sites, cold chain food, hospitals and clinics, and key institutions Management and monitoring.

(CCTV reporter Pang Ding)