(Fighting against New Coronary Pneumonia) Experts analyze four reasons for the complexity of this round of epidemic situation in Shandong

　　China News Service, Jinan, March 13 (Li Mingrui) A reporter learned from a press conference on epidemic prevention and control in Shandong Province on the 13th that the current round of epidemic in Shandong generally presents the characteristics of "multiple points, wide coverage and frequent occurrence". There are many, the situation is complex, mainly related to four reasons including the constant mutation of the pathogen of new coronary pneumonia.

　　Kou Zengqiang, director of the Infectious Disease Control Institute of Shandong CDC, analyzed at the meeting that from the first wild strains to Alpha, Beta, Delta and now Omicron, the new coronavirus has been constantly mutating.

The current round of the epidemic in Shandong was caused by a variant of the new crown pneumonia Omicron, with different evolutionary branches.

Compared with previous strains, the passage speed has increased.

In addition, the hidden infection route makes it difficult for the current symptom monitoring system to detect and give early warning, and it is easy to trigger the epidemic at multiple points, causing the epidemic to spread or even break out.

　　Kou Zengqiang said that the virus transmission chain of this round of epidemic in this province is extremely complicated, and the places and groups of people where the epidemic occurred are relatively special.

The first outbreaks occurred in schools, factories, bathrooms and other places with closed spaces, densely populated and large numbers of people.

Once the virus is introduced into the above-mentioned places, it spreads faster.

At the same time, Shandong lacks actual combat experience in the prevention and control of Omicron mutants.

"The new crown pneumonia has been spreading around the world for more than two years. Although there were occasional outbreaks in Shandong before and after the Spring Festival, they were quickly controlled and did not cause large-scale spread, which made social prevention and control prone to paralysis and carelessness, and the vigilance was relaxed. "

　　In response to the safety of imported goods that the public is more concerned about, Zou Xingzu, a second-level inspector of the Shandong Provincial Market Supervision Administration, said that Shandong has built special warehouses throughout the region, and 16 cities have built and operated 47 special warehouses for centralized supervision. Implement centralized nucleic acid testing and preventive disinfection.

Since the operation of the special warehouse on December 10, 2020, the province has accumulated 2.4305 million tons of imported cold chain food, 4.8502 million nucleic acid samples were tested, and 182 batches of positive food were detected. market.

"Shandong has also built a traceability system to realize the full chain traceability of imported cold chain food from special warehouse reporting to terminal sales."

　　It is understood that since the beginning of this year, Shandong special warehouses have imported 372,000 tons of cold chain food, and the number of positive food detections has remained high.

Since the beginning of this year, a total of 42 batches of positive food have been detected in 21 special warehouses in 8 cities, from 11 countries.

　　As of 24:00 on March 12, Shandong reported 756 local confirmed cases and 1,170 local asymptomatic infections.

Among the confirmed cases, there are 715 mild cases, 40 ordinary cases, and 1 severe case.

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