(Fighting New Coronary Pneumonia) Chengdu's medium-risk areas are all cleared that the source of this local epidemic is imported from Nepal
China News Service, Chengdu, December 31 (Reporter Wang Peng) The Chengdu Municipal Health Commission notified on the 31st that from 17:00 that day, the eight groups of resettlement sites in Babuqiao Community, Sandaoyan Town, Pidu District will be adjusted from medium-risk areas. It is a low-risk area.
So far, all the risk areas in Chengdu have been cleared.
The report stated that the current epidemic in Chengdu was a local epidemic related to an imported case from Nepal.
On December 7, Pidu District reported the first locally confirmed case of new coronary pneumonia in Chengdu.
After the outbreak, Chengdu carried out detailed and precise flow adjustments, carried out a full-scale analysis of the trajectories of cases and related close contacts, classified management of different types of contacts, and managed a total of 647 close contacts and 2,661 close contacts; Based on the principle of “where, where to check”, a total of 2.356 million nucleic acid tests have been completed; risk levels have been accurately delineated and key areas have been sealed and controlled. At present, all six medium-risk areas have been reduced to low risks.
A total of 13 confirmed cases and 1 asymptomatic infection were reported in this local epidemic in Chengdu.
As of 17:00 on December 31, 3 confirmed cases in this epidemic have been cured and discharged, and are continuing to receive medical observation in the centralized isolation point, and the remaining cases are under active treatment.
The report stated that since the last case was reported on December 17, Chengdu has had no new local cases for 14 consecutive days, the spread of the virus has been blocked, and the epidemic has been effectively controlled.
After the outbreak, the National Health Commission, provincial and municipal health, public security and other departments quickly formed a special traceability investigation team to jointly carry out traceability work.
The expert team comprehensively analyzed the results of on-site epidemiological investigations, big data investigations, nucleic acid testing, and gene sequencing, and determined that this epidemic was a local epidemic related to an imported case abroad.
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.
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