A community-level study on COVID-19 transmission and policy interventions in Wuhan, China

Gao, Zhe; Wang, Siqin; Gu, Jiang; Gu, Chaolin; Liu, Regina

doi:10.1016/j.cities.2022.103745

Cited by 13 publications

(5 citation statements)

References 59 publications

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“…Due to privacy concerns, COVID-19 data acquired and released by governments and healthcare authorities are mostly only available at a relatively coarse level, which is usually limited to the nationwide level instead of down to local areas [27,28]. Of note, Gao et al presented a precious community-level study about ancestral SARS-CoV-2 strain transmission and policy interventions in Wuhan, China [29]. The authors found that the viral spread in local communities was irrelevant to the socioeconomic position and the built environment of a community but was related to its demographic composition.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Strict Lockdown on Omicron SARS-CoV-2 Variant Transmission in Shanghai

et al. 2022

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Omicron, the current SARS-CoV-2 variant of concern, is much more contagious than other previous variants. Whether strict lockdown could effectively curb the transmission of Omicron is largely unknown. In this retrospective study, we compared the strictness of government lockdown policies in Shanghai and other countries. Based on the daily Omicron case number from 1 March 2022 to 30 April 2022, the effective reproductive numbers in this Shanghai Omicron wave were calculated to confirm the impact of strict lockdown on Omicron transmission. Pearson correlation was conducted to illustrate the determining factor of strict lockdown outcomes in the 16 different districts of Shanghai. After a very strict citywide lockdown since April 1st, the average daily effective reproductive number reduced significantly, indicating that strict lockdown could slow down the spreading of Omicron. Omicron control is more challenging in districts with higher population mobility and lockdown is more likely to decrease the number of asymptomatic carriers than the symptomatic cases. All these findings indicate that the strict lockdown could curb the transmission of Omicron effectively, especially for the asymptomatic spread, and suggest that differentiated COVID-19 prevention and control measures should be adopted according to the population density and demographic composition of each community.

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Section: Discussionmentioning

confidence: 99%

The Effect of Strict Lockdown on Omicron SARS-CoV-2 Variant Transmission in Shanghai

et al. 2022

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“…The theory behind non-pharmacological interventions is to limit population build-up and movement, and traffic control is the most effective way to do this ( Xiang, Chen, Peng, Wang, Liu, 2022a ). To block the spread of the epidemic, >140 countries around the world have taken various traffic control measures, including home quarantine, public transport shutdowns and traffic shutdowns in infected areas ( Gao et al, 2022 ; Mayer & Boston, 2022 ). In the United States, Australia and China, the most common traffic control measures used include shutting down public transportation in cities at the center of the outbreak, blocking all modes of transportation in the infected areas of cities and requiring residents to stay at home in quarantine for about 14 days if there are cases of infection in their community ( Beck et al, 2021 ; Goenaga et al, 2021 ; S. Lai, Ruktanonchai, Zhou, Prosper, et al, 2020a ; Z.…”

Section: Introductionmentioning

confidence: 99%

The impact of traffic control measures on the spread of COVID-19 within urban agglomerations based on a modified epidemic model

Xiang

Chen

Yan

et al. 2023

Cities

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“…From the sociodemographic perspective, the risk of COVID-19 infection is much higher for the elderly and children than it is for young and middle-aged adults (5)(6)(7). In addition, the degree of economic development across regions may exert an impact on the transmission rate of COVID-19 (8,9).…”

Section: Introductionmentioning

confidence: 99%

Mechanisms influencing the factors of urban built environments and coronavirus disease 2019 at macroscopic and microscopic scales: The role of cities

Zhang

Han²,

Wu³

et al. 2023

Front. Public Health

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In late 2019, the coronavirus disease 2019 (COVID-19) pandemic soundlessly slinked in and swept the world, exerting a tremendous impact on lifestyles. This study investigated changes in the infection rates of COVID-19 and the urban built environment in 45 areas in Manhattan, New York, and the relationship between the factors of the urban built environment and COVID-19. COVID-19 was used as the outcome variable, which represents the situation under normal conditions vs. non-pharmacological intervention (NPI), to analyze the macroscopic (macro) and microscopic (micro) factors of the urban built environment. Computer vision was introduced to quantify the material space of urban places from street-level panoramic images of the urban streetscape. The study then extracted the microscopic factors of the urban built environment. The micro factors were composed of two parts. The first was the urban level, which was composed of urban buildings, Panoramic View Green View Index, roads, the sky, and buildings (walls). The second was the streets' green structure, which consisted of macrophanerophyte, bush, and grass. The macro factors comprised population density, traffic, and points of interest. This study analyzed correlations from multiple levels using linear regression models. It also effectively explored the relationship between the urban built environment and COVID-19 transmission and the mechanism of its influence from multiple perspectives.

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A community-level study on COVID-19 transmission and policy interventions in Wuhan, China

Cited by 13 publications

References 59 publications

The Effect of Strict Lockdown on Omicron SARS-CoV-2 Variant Transmission in Shanghai

The Effect of Strict Lockdown on Omicron SARS-CoV-2 Variant Transmission in Shanghai

The impact of traffic control measures on the spread of COVID-19 within urban agglomerations based on a modified epidemic model

Mechanisms influencing the factors of urban built environments and coronavirus disease 2019 at macroscopic and microscopic scales: The role of cities

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