In the face of the rapidly spreading Epidemic in Omikeron, the strictest, most thorough, and most resolute measures should be taken to block the spread of the epidemic in society as soon as possible.
Written by | Tian Dongliang
Source | "Medical Community" public account
Ma Xiaowei, director of the National Health Commission, recently issued an article in the first page of the "Learning Times" to "curb the spread of the epidemic as soon as possible and resolutely consolidate the hard-won achievements in prevention and control", in which he reiterated again: Adhere to the general strategy of "external prevention of imports, internal prevention and rebound" and the general policy of "dynamic clearance", and describe "virus coexistence" and "virus flu" as wrong ideas and wrong arguments.
Director Ma Xiaowei pointed out that the mainland has experienced four stages of epidemic prevention and control, the first stage is the emergency containment stage of the sudden epidemic, the second stage is the normalization prevention and control exploration stage, the third stage is the "dynamic zeroing" stage of accurate prevention and control of the whole chain, and has now entered the fourth stage of "scientific precision and dynamic zeroing" of all-round comprehensive prevention and control. In the face of the rapidly spreading Epidemic in Omikeron, the strictest, most thorough, and most resolute measures should be taken to block the spread of the epidemic in society as soon as possible.
How should "dynamic zeroing" be understood? On the evening of April 18, Wu Zunyou, chief expert of epidemiology at the Chinese Center for Disease Control and Prevention, posted a long article on Interpretation via Weibo.
For "dynamic zeroing", Wu Zunyou believes that the fundamental purpose of dynamic zeroing is to find an epidemic, extinguish an epidemic, and prevent the epidemic from "taking root" in the local area. The soul of dynamic zeroing is to discover early, control early, and eliminate every epidemic in the bud. The core of dynamic zeroing is to cut off the transmission chain, and the main measures include early detection, early reporting, early isolation, and early treatment.
Wu Zunyou also pointed out four misconceptions about "dynamic zeroing" in the article:
Myth #1: Zero infection. Dynamic zeroing does not equal zero infection, and dynamic zeroing does not pursue zero infection. Dynamic zeroing emphasizes the zeroing of infected people at the social level, and does not require that there are no infected people in the location of the epidemic. The so-called zero at the social level means that there are no infected people in the group of free social activities, even if there is a certain number of infected people in the isolated management group, it does not matter, because they are in isolation and will not spread to society.
Myth 2: Sealing. Dynamic zeroing measures are not equivalent to sealing and control measures, dynamic zeroing measures, depending on the stage of epidemic detection, if found early, only need to isolate and treat patients, plus isolation and observation of close contacts, can achieve zeroing. Containment measures should only be used in cases of high community transmission.
Misconception three: nucleic acid testing for all employees. Dynamic zeroing is not the same as nucleic acid testing for all employees, do not mention dynamic zeroing, think of nucleic acid testing for all employees in the city. As long as the epidemic is detected early, the transmission chain is clear, and close contacts are found, there is no need to do nucleic acid screening for all employees. Full nucleic acid screening measures are used only when there is more community transmission and the chain of transmission is unclear.
Myth Four: Affecting the Economy. In fact, dynamic zeroing can maximize the escort of economic construction. Only when the development of the epidemic situation is relatively severe, and a large range of nucleic acid screening and sealing and control measures are needed, the dynamic zeroing strategy will have a certain impact on economic development. According to the preliminary analysis of mathematical model experts, the impact of dynamic zeroing strategy on local GDP is only half of the economic impact of non-dynamic zeroing strategy.
However, the current epidemic prevention and control in many parts of the country is in line with director Ma Xiaowei's requirements of "taking the strictest, most thorough, most resolute and decisive measures", and it is precisely in line with the misunderstanding of "dynamic clearance" described by Wu Zunyou, and sealing and controlling and nucleic acid testing of all employees are common epidemic prevention measures taken in many places in China at present.
From 00:00 on April 6, Shangqiu City, Henan Province, in the absence of a report of covid-19 cases, required all non-essential shopping malls, supermarkets and specialized stores in the city to suspend business. The reason is that Shangqiu is facing the dual pressure of "external defense input and internal defense rebound", which can effectively prevent and reduce the gathering of personnel. From 00:00 on April 19, Shangqiu gradually resumed normal production and living order.
On April 14, 3 asymptomatic infected people were reported in Huoqiu County, Anhui Province, and from 22:00 on April 16, Huoqiu County implemented static management.
On April 16, a case of positive infection was found in the main urban area of Wuhu City, Anhui Province, and from 4:00 a.m. on April 17, the main urban area of Wuhu City implemented static management and immediately carried out nucleic acid testing for all regional staff.
In explaining the misunderstanding of "dynamic zeroing", Wu Zunyou gave the example of Shanghai, which has had 12 new crown epidemics in the past two years, and the maximum number of cases in each epidemic has not exceeded 25, and it has been controlled, zero clearance has been achieved, and no sealing measures have been taken.
However, Shanghai is currently caught in the bitter battle of the epidemic. After experiencing this round of epidemics, Shanghai still has no confidence, and then draw a risk area the size of a milk tea shop, and draw a question mark.
On April 19, the joint prevention and control mechanism of the State Council held a press conference on epidemic prevention and control, at which it was once again reiterated that it was necessary to strictly implement differentiated prevention and control measures, strictly prevent "one-size-fits-all", "simplification" and "layer by layer", strictly prohibit unauthorized card interception, arbitrarily cut off roads and villages, and maintain the order of agricultural production and personnel and material circulation.
The new crown virus has been constantly mutating, for some people think that the new crown virus in the direction of increased infectivity, weakened pathogenicity of the view, Wu Zunyou also said at the press conference: from a biological point of view, there is no essential connection between infectiousness and pathogenicity. At present, it has not been found that the new coronavirus mutation has obvious laws in terms of infectivity and pathogenicity, and it is possible to develop in the direction of increased infectivity and weakened pathogenicity, and it is also possible to develop in the direction of increased infectivity and pathogenicity. No matter how it mutates, we have to prepare for the worst possible.
Source: Medical community
Editor-in-charge: Zheng Huaju
Proofreader: Zang Hengjia