▲Within 48 hours yesterday and today, nucleic acid screening was conducted twice for personnel in key areas. Photo by our reporter Yuan Jing
Yesterday, 1 new local confirmed case of new coronary pneumonia and 19 local asymptomatic infections were added in Shanghai. One confirmed case was converted from an asymptomatic infection to a confirmed case. Among the 19 asymptomatic infections, 7 were found in centralized isolation and control, 1 was found in the co-investigation of people returning to Shanghai from other provinces, and the rest were found by screening of relevant risk groups.
After research and decision by the Municipal Prevention and Control Office, No. 920, Tingyue Road, Huinan Town, Pudong New Area, and Jianchuan Road Comprehensive Service Center, Jiangchuan Road Street, Minhang District, will be listed as medium-risk areas from now on. Implement control measures. From 0:00 on March 17th, the Yonghui Supermarket Huting North Road Store in Jiuliting Street, Songjiang District will be adjusted from a medium-risk area to a low-risk area. The risk levels of other areas in Shanghai remain unchanged. At the press conference on the city’s epidemic prevention and control work held yesterday, the heads of relevant departments also answered questions of public concern.
Zhao Dandan, deputy director of the Municipal Health and Health Commission, introduced that after the expert group’s research and judgment, some key areas were determined according to regional risks and other conditions. Within 48 hours yesterday and today, conduct 2 nucleic acid screenings for personnel in these key areas (except those already in the control area).
Asymptomatic infections increased?
Associated with Omicron toxicity, mass population vaccination, active screening
There are many asymptomatic infections in this round of epidemic in Shanghai, especially after the Omicron strain has become the main epidemic strain recently, asymptomatic cases can reach 80%-90%.
“The current proportion of asymptomatic infections in Shanghai is similar to that of other countries and regions.” Wu Jinglei, director of the Municipal Health Commission, introduced that there are three main reasons for this. First, studies have shown that the pathogenic virulence of the Omicron strain has been reduced, significantly reducing the proportion of symptoms. Second, mass vaccination of the population plays an important role in protecting the broad susceptible population. Analysis of existing case studies found that among all cases, the vaccination ratio was close to 94%, the incidence of severe disease was reduced to 0.1%, and no case developed into critical disease. These data show that vaccines are very important to alleviate symptoms. Third, after active screening increased the detection rate, more asymptomatic infections were screened. With the advance of epidemiological investigations in large numbers, the screening capacity and scope are larger, and after the outbreak, the relevant close contacts, sub-close contacts, and risk groups are quickly controlled. These measures have enabled faster detection of infected people in the incubation period, and the proportion of asymptomatic infected people has also increased in early active screening.
“Asymptomatic infection does not mean low infectivity, so centralized isolation measures must be implemented for asymptomatic infection to control the source of infection and block the spread.” Wu Jinglei said that Shanghai also has asymptomatic infections at the same time. Some asymptomatic infected persons will experience changes in their condition, especially the elderly, those who have not been vaccinated, those who are obese, and those with serious underlying diseases, who may develop from asymptomatic to symptomatic or even severe disease. During this period, it is convenient for medical staff to detect and treat in time.
Wu Jinglei said that the treatment of asymptomatic infection is similar to that of mild cases. Clinical observation and follow-up are carried out, risk assessment is carried out, and at the same time, the primary disease is treated, supplemented by moderate medical treatment.
Sampling volume surged, is the nucleic acid energy level sufficient?
The maximum daily output reaches 8.85 million, which can meet the needs of current testing institutions
Currently, Shanghai Nucleic Acid The inventory of testing reagents has reached 13 million, with a daily output of nearly 4 million, with a maximum daily production capacity of 8.85 million, which can meet the current reagent needs of testing institutions.
Liu Ping, deputy director of the Municipal Commission of Economy and Information Technology, introduced that the Municipal Commission of Economy and Information Technology is making every effort to build incremental nucleic acid detection capabilities. Through the joint efforts of all parties, as of now, the cumulative nucleic acid detection capacity has been increased by 200,000 tubes per day on the original basis. “According to the calculation of 10 mixed 1, it is equivalent to the detection capacity of 2 million new tests in the city; it is expected on March 17. An additional 125,000 tubes can be added; in the future, we will continue to increase the detection capacity, and a total of 450,000 tubes will be added, that is, a maximum of 4.5 million new detection targets.” Liu Ping said that on this basis, the Municipal Economic and Information Commission fully tapped the potential of stock detection. For example, by coordinating universities, scientific research institutes, biopharmaceutical companies, etc. to deploy employees with nucleic acid testing qualifications to form an “industrial coalition”, the Municipal Clinical Testing Center urgently trained nearly 300 nucleic acid testing operators, and the city has nucleic acid testing operation experience and qualified personnel. More than 200 people who meet the conditions have rushed to the front line of testing to ensure the 24-hour uninterrupted operation of nucleic acid testing institutions in this city and release their testing potential. The Municipal Commission of Economy and Information Technology stated that it is strengthening the scheduling and matching of sampling and testing, making every effort to connect and scheduling all links such as sampling, transportation, testing, and reporting, and speeding up the speed from sampling to reporting.
Pudong New Area Deputy Mayor Yan Bo introduced that Pudong New Area, as a super-large urban area in Shanghai, has a large area and a relatively large population. It is also home to Pudong International Airport including Waigaoqiao Port and Yangshan Deepwater Port. The country’s important ports and logistics hubs are located, and the overall epidemic prevention and control situation is complex and the task is arduous. In view of the characteristics of the current round of epidemics that are insidiously spreading, spreading rapidly, and making early detection more difficult, under the guidance of the Municipal Center for Disease Control and Prevention, Pudong New Area has comprehensively used the “clue tracing method” and “expanded screening method” to increase the number of first cases, clustering Case tracking efforts, while recruiting personnel to enrich the force, rapidly increased by 50% of the flow of support personnel.
Author: Li Chenyan, Jiang Peng
Editor: Shi Wei
*Wenhui’s exclusive manuscript, please indicate the source when reprinting.