(Fighting New Coronary Pneumonia) Why does Zhengzhou carry out multiple rounds of large-scale nucleic acid testing?

Zhengzhou official answer

  Chinanews.com Zhengzhou, August 21 (Reporter Li Guigang) After four rounds of nucleic acid testing for all employees and multiple rounds of nucleic acid testing for key populations, Zhengzhou held the 19th press conference on the prevention and control of the new crown pneumonia epidemic on August 21 The notification stated that the fifth round of nucleic acid testing for all employees is currently being actively prepared.

So why does Zhengzhou carry out multiple rounds of large-scale nucleic acid testing?

  At the press conference that day, Li Huifang, Deputy Secretary-General of the Zhengzhou Municipal Government, said that from 0:00-24:00 on August 20, there were no new local confirmed cases and asymptomatic infections in Zhengzhou.

Since the outbreak of this round of the epidemic, a total of 138 confirmed local cases and 1 asymptomatic infection have been reported.

As of 24:00 on August 20, a total of 23 confirmed patients in Zhengzhou had been cured.

  Over the past few days, more than 10 medium-risk areas in Zhengzhou have been adjusted to low-risk areas, and some closed-off areas have been unblocked.

  According to the requirements of the "Implementation Measures for the Administration of Release of Isolation and Sealing and Control of Zhengzhou", adjustments and releases must meet the following conditions: on the basis of implementing various epidemic prevention and control measures, 14 consecutive days and at least 4 rounds of nucleic acid testing for all employees. People who are infected.

  Up to now, Zhengzhou has had no new locally confirmed cases and asymptomatic infections for several consecutive days.

  From the above, it is not difficult to find that the current round of the epidemic in Zhengzhou has begun to develop in a positive direction.

In view of the current "Delta" virus has the characteristics of large capacity, strong infectivity, and wide spread, Zhengzhou is actively preparing for the fifth round of nucleic acid testing for all employees.

  So why does Zhengzhou carry out multiple rounds of large-scale nucleic acid testing?

  Li Shuo, a member of the Nucleic Acid Testing Department of the Zhengzhou Epidemic Prevention and Control Leading Group, introduced that “early prevention, early detection, early reporting, and early isolation” to quickly screen, detect and block the spread of the virus, nucleic acid testing is still one of the most effective methods .

Only through large-scale population nucleic acid screening can we quickly discover potential cases, identify and target risk areas and key populations, and take timely targeted control measures to stop the spread of the epidemic.

  Li Shuo introduced that Zhengzhou has carried out multiple rounds of large-scale nucleic acid testing mainly based on two considerations: First, due to the existence of the window period.

The window period refers to the period from when a pathogen enters the human body to when it can be detected by certain detection techniques.

The window period for nucleic acid detection of the new coronavirus is affected by many factors such as detection methods, test reagents, and individual patient differences. If the sample test is in the window period, it will not be detected and missed.

The second is that in the sampling and inspection process, there may be individual people who fail to participate in the inspection due to various reasons, resulting in a small probability of missed inspection.

When the above two factors are superimposed on the huge population base of Zhengzhou, it is often difficult to screen out all infected people in a few rounds of nucleic acid testing.

Therefore, it is very necessary to carry out multiple rounds of large-scale nucleic acid testing for the early detection of new coronary pneumonia cases and asymptomatic infections, and the implementation of precise prevention and control.

  One day ago, Li Huifang reported that at present, Zhengzhou City has detected 23 positive persons from four rounds of national screening, and 25 positive persons from multiple rounds of screening at the centralized isolation medical observation point.

It can be seen that in order to completely eliminate potential risks, it is necessary to carry out multiple rounds of nucleic acid testing for all employees.

  As we all know, the "eye of the storm" in Zhengzhou's current round of epidemic is Erqi District. What is the current situation?

  At the press conference that day, Gao Yan, deputy head of Erqi District, introduced that at present, five streets in Erqi District have been unblocked, and one community has been adjusted to a low-risk area.

For areas that have been unblocked, the Erqi District still adheres to the principle of "unblocking and preventing prevention", insists on continuous strict control, and unswervingly grasps the normalized epidemic prevention and control work.

  In accordance with the requirements of epidemic prevention and control, after the closure of management is lifted, citizens should continue to not flow if necessary, and keep the "one-meter line" away from gathering.

Citizens who are still in the closed and closed areas should still insist on cooperating with prevention and control work such as "not leaving home" and "not leaving the hospital".

(End)

Keywords: