In the past few days, epidemics have occurred in Tianjin, Shanghai and Inner Mongolia at the same time, which has been rarely seen in a long time in the past.
On November 24, at the 155th Tianjin press conference on the prevention and control of the novel coronavirus pneumonia in Tianjin, relevant staff informed the latest situation of the epidemic in Tianjin.
Tractical source of infection and infection chain in Tianjin
Hailian cold storage source of epidemic:
Imported North American pig head
Ms. Zhang Ying, deputy director of Tianjin Center for Disease Control and Prevention, introduced the source of epidemic in Tianjin Hailian cold storage: North American pig head.
On October 7, Dezhou City, Shandong Province reported that a batch of German imported pig elbows were transferred from Tianjin Port to Dezhou City, and the outer packaging was detected to be positive for nucleic acid.
Tianjin Health Commission followed this line to investigate the Hailian Cold Storage, and found cases No. 138 and No. 139.
Through epidemiological investigation, it was found that
The two people had different contact objects: Case No. 138 was a unloader, and the unloading goods were German pig elbows; Case No. 139 was the driver who transported goods, and the North American pig heads were transported, but he had never transported German pig elbows.
retrieves the cold storage video and finds these suspicious points. The picture below shows the main reason why Case No. 139 was infected after retrieving the video.
image click to enlarge
↘November 4 is the day of Hailian Cold Storage. On that day, three batches of goods were shipped to Hailian Cold Storage at different times. One batch was German pig elbow, and the other two were North American pig heads.
There is a key figure in this person who is the loader and unloader. In case No. 138, he unloaded the pig elbows that entered the warehouse, and he also unloaded the pig heads that entered the warehouse No. 2, but he did not unload the pig heads that entered the warehouse No. 5.
↘November 5 is the day when the three batches of goods are shipped out. Germany's pig elbow came out of the operating platform of warehouse No. 4, and the unloader is still case No. 138. After moving the pig heads from warehouse No. 2, he still wore the same clothes and the same gloves the next day, and continued to go out of warehouse No. 2.
It is possible that the positive test of pork elbow and packaging in Dezhou, Shandong is caused by contamination of the outer surface of the unloader's clothes or gloves.
Truck driver is Case No. 139. During the entire transportation process,
does not participate in pig head handling. How did he get infected? After retrieving the video, it was found that during the process of leaving the pig head, the outer packaging of the pig head was scattered, and the pig head with a layer of plastic film rolled down to the ground. The driver participated in picking up the pig head, and he picked up the pig head and put it back into the car. So he was exposed to the pig head, which can explain that the source of infection in Case No. 139 was indeed pig head.
The source of infection locked in this incident was North American pig heads, which polluted German pig elbows and caused positive pig elbows to be packaged.
The nucleic acid test where pig heads are scattered is positive. At the same time, the sequencing is completely consistent with the gene sequencing of cases No. 138 and 139. From this epidemic, it can be confirmed that North American pig heads are the source of its infection. Case No. 138 participated in the unloading of pig heads, and Case No. 139 participated in the picking of pig heads.
In addition, the nucleic acid of the new coronavirus was also detected on the sheets of the three beds where the porter rested, which can basically confirm and close the case.
Tianjin Kanhaixuan infection chain:
infected people cough and sneeze in the elevator
not wearing masks
Deputy Director of Tianjin Center for Disease Control and Prevention:
The transmission relationship between the virus in Building 4 and Building 19 of Kanhaixuan is like this!
Image Click to enlarge
Lingan Building 4 infection chain spread through the confined space - elevator. The infected person Wang entered the elevator without protection and coughed, and the infected person Kang's family entered the elevator without wearing a mask.
Kan Haixuan Building 19 infection chain
is also related to the infected person
coughing and sneezing in the elevator.
Tianjin Binhai New Area
2.467 million people nucleic acid test results were released
Deputy Commander-in-Chief and Deputy District Mayor Liang Chunzao introduced that the "Bincheng Large Screen" was launched at 10 a.m. on November 21, and to 10 a.m. on November 23, all 2467,411 nucleic acid sampling work was completed.
24 at 10:00 am on the 224th, the results were released, and the test results showed that all were negative.
The Municipal Health Commission reported this morning (25th) that from 0:00 to 24:00 on November 24, two confirmed cases of imported new coronavirus pneumonia were reported through the port joint prevention and control mechanism. There were 7 new cases of cured and discharged, including 1 from Belgium, 1 from Poland, 1 from Russia, 1 from the Netherlands, 1 from Mali, 1 from Serbia, and 1 from Italy.
Case 1 is a Chinese national who studies in Switzerland. He departed from Switzerland on November 22 and arrived at Shanghai Pudong International Airport on November 23. After entering the country, he was immediately quarantined and observed, and during this period he developed symptoms. Based on the epidemiological history, clinical symptoms, laboratory tests and imaging examination results, the patient was diagnosed as a confirmed case.
Case 2 is a Chinese national who lives in France. He departed from France on November 22 and arrived at Shanghai Pudong International Airport on November 23. After entering the country, he was immediately quarantined and observed, and during this period he developed symptoms. Based on the epidemiological history, clinical symptoms, laboratory tests and imaging examination results, the patient was diagnosed as a confirmed case.
2 imported confirmed cases from abroad have been transferred to designated medical institutions for treatment, and 45 close contacts on the same flight have been traced, all of which have been subject to centralized isolation and observation.
From 0:00 to 24:00 on November 24, there were no new local confirmed cases of new coronary pneumonia.
As of 24:00 on November 24, a total of 965 imported confirmed cases were reported, 914 were discharged from hospital, 51 were treated in hospital, and no severe or critical cases were found. There is currently 1 suspected case to be investigated.
As of 24:00 on November 24, a total of 349 local confirmed cases have been reported, 335 cured and discharged, 7 cases are being treated in hospital, and 7 deaths are being killed. There are currently 0 suspected cases to be investigated.
As of 24:00 on November 24, there were 0 asymptomatic infections still under medical observation.
The epidemic has not ended yet
Keep vigilant
Strict prevention and control
Data: Shanghai Release, CCTV News, Tianjin Release, Huashang Daily, New Evening News
Editor: Ruby Lin
