The Dynamic COVID-Zero Strategy in China

Liu, Jue; Liu, Min; Wan, Liang

doi:10.46234/ccdcw2022.015

Cited by 130 publications

(112 citation statements)

References 6 publications

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“…Larger-scale residential areas in cities have high population density, and the number of residents is not always clear. Elevator cars and buttons, stair handrails, unit door handles, and other high-frequency use and closed environment of public facilities were likely to cause virus transmission (7)(8). It was difficult to control the flow of people in and out of commercial and residential buildings that faced the street.…”

Section: Risks In An Outbreakmentioning

confidence: 99%

“…In conclusion, a zero-COVID strategy is the current policy for the prevention and control of the epidemic in China ( 9 ). When local COVID-19 cases appear, comprehensive actions should be taken immediately to ensure timely detection, rapid disposal, precise control of spread, and effective treatment.…”

Section: Prevention and Control Measures In Case Of Outbreakmentioning

confidence: 99%

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Strengthening Community Defenses to Prevent and Control the Spread of COVID-19 in China

Zhang

Lyu

et al. 2022

China CDC Weekly

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In light of the severity of coronavirus disease (COVID-19) around the world, it is an arduous task for China to prevent COVID-19 from being imported from abroad and proliferating domestically. The community is the first and most effective line of defense and can effectively cut off the channels of spread of the epidemic. In order to reduce risks of COVID-19 transmission in the community, it is necessary to sort out the loopholes in risk and management, as well as investigate previous epidemic transmission events in the community.

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Section: Risks In An Outbreakmentioning

confidence: 99%

Section: Prevention and Control Measures In Case Of Outbreakmentioning

confidence: 99%

Strengthening Community Defenses to Prevent and Control the Spread of COVID-19 in China

Zhang

Lyu

et al. 2022

China CDC Weekly

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“…We then investigated the impact of introducing different levels of NPIs (in the presence of vaccination, but absence of antivirals). First, we tested the extension of the dynamic zero-COVID strategy implemented in China since mid-2020 25 with the effect of seeding the epidemic in June 2022 (Epi onset: Jun 1 scenario). This scenario would lead to a 10.1-10.6% reduction of COVID-19 burden (Fig.…”

Section: Impact Of Individual Mitigation Strategiesmentioning

confidence: 99%

“…From March 1 through March 13, 2022, more than 10,000 local Omicron infections have been reported in 27 provinces across China, with growing outbreaks occurring in Jilin, Guangdong, and Shanghai 24 . To contain the highly infectious and immune evasive Omicron variant, additional NPI measures are required to maintain the dynamic zero-COVID policy 25 . Whether and for how long these policies can remain in place is debated, and as recommended by the WHO 26 , every country should be prepared to chart its own path to transit from a pandemic to an endemic phase, accounting for local epidemiology, vaccination levels, population immunity, the strength of health services, etc..…”

Section: Introductionmentioning

confidence: 99%

Projecting the impact of the introduction of SARS-CoV-2 Omicron variant in China in the context of waning immunity after vaccination

Cai

Deng

et al. 2022

Preprint

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After the adoption of a dynamic zero-COVID strategy in China for nearly two years, whether and for how long this policy can remain in place is unclear. The debate has thus shifted towards the identification of mitigation strategies capable to prevent the disruption of the healthcare system, should a nationwide epidemic caused by the SARS-CoV-2 Omicron variant start to unfold. To this aim, we developed a mathematical model of SARS-CoV-2 transmission tailored to the unique immunization and epidemiological situation of China. We find that the level of immunity induced by the current vaccination campaign would be insufficient to prevent overwhelming the healthcare system and major losses of human lives. Instead, a synergetic strategy would be needed and based on 1) a heterologous booster vaccination campaign, 2) treating 50% of symptomatic cases with an antiviral with an 80% efficacy in preventing severe outcomes, and 3) the adoption of non-pharmaceutical interventions (NPIs) capable of reducing Rt to ≤2. Protecting vulnerable individuals by ensuring accessibility to vaccines and antivirals, and maintaining a certain degree of NPIs should be emphasised in a future mitigation policy, possibly supported by strengthening critical care capacity and the development of highly efficacious vaccines with long-lasting immunity.

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“…At first, China’s strict dynamic Covid-zero policy against imported infections and local transmission based on science [ 8 ] have not been fully recognized by other countries. With the deterioration of the global spread of the Delta and Omicron variants, however, many countries started to recognize the importance of general prevention and control policies instead of merely depending on vaccination and herd immunity.…”

Section: Introductionmentioning

confidence: 99%

The governance of imported 2019-nCov infections: What can be learned from China’s experience?

Chen

et al. 2022

glob health res policy

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Delta and Omicron variants of 2019-nCoV are still spreading globally, and many imported infections have been identified in China as well. In order to control the spread chain from imported to local, China has implemented the dynamic Covid-zero policy. In this article we summarized China’s governance models and practices of fighting potential imported infections in two directions. One targets at international travelers, which can be outlined as four lines of defense: customs epidemic prevention, quarantine upon arrival, relevant laws and regulations, and community tracking. The other is against other vectors potentially carrying 2019-nCoV, which can be outlined by three lines of defense: customs epidemic prevention, disinfection and personal protection, and information management. However, there are still some challenges that are yet to be addressed, such as illegal immigration, accidental occupational exposure to 2019-nCoV, etc. China’s experience indicates that no country can stay safe during the global pandemic as long as there are local outbreaks in other countries, and active prevention and control measures based on science and a complete set of laws and regulations are still necessary at current stage. What’s more, accountable government commitment and leadership, strengthened health and social governance systems, and whole society participation are required. It is suggested that the global community continue to closely cooperate together and take active rather than passive actions to block the potential imported 2019-nCoV from causing local spreading.

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The Dynamic COVID-Zero Strategy in China

Cited by 130 publications

References 6 publications

Strengthening Community Defenses to Prevent and Control the Spread of COVID-19 in China

Strengthening Community Defenses to Prevent and Control the Spread of COVID-19 in China

Projecting the impact of the introduction of SARS-CoV-2 Omicron variant in China in the context of waning immunity after vaccination

The governance of imported 2019-nCov infections: What can be learned from China’s experience?

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