Go To Travel campaign and the geographic spread of COVID-19 in Japan

Review Medicine, General & Internal

Problems with evidence assessment in COVID-19 health policy impact evaluation: a systematic review of study design and evidence strength

Noah A. Haber et al.

Summary: The reviewed literature evaluating the impact of COVID-19 policies has failed to meet rigorous design criteria and provide actionable evidence for policymakers.

BMJ OPEN (2022)

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Article Environmental Sciences

A meta-analysis result: Uneven influences of season, geo-spatial scale and latitude on relationship between meteorological factors and the COVID-19 transmission

Hong-Li Li et al.

Summary: The influence of meteorological factors on COVID-19 transmission varies significantly and is affected by season, geospatial scale, and latitude. Temperature rise promotes virus transmission in cold seasons, while relative humidity inhibits transmission at the national scale.

ENVIRONMENTAL RESEARCH (2022)

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Article Medicine, General & Internal

Impact of first UK COVID-19 lockdown on hospital admissions: Interrupted time series study of 32 million people

Syed Ahmar Shah et al.

Summary: The first lockdown measures had a significant negative impact on hospital care for non-COVID-19 conditions in England, Scotland, and Wales, with reduced admission rates persisting even after the easing of restrictions. The most deprived and minority ethnic groups were disproportionately affected.

ECLINICALMEDICINE (2022)

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Article Mathematical & Computational Biology

Epidemiology of coronavirus disease 2019 (COVID-19) in Japan during the first and second waves

Ryo Kinoshita et al.

Summary: This study aims to descriptively examine the propagation of the COVID-19 epidemic in Japan during the first and second waves, analyzing the effects of time, age, space, and implemented interventions on transmission.

MATHEMATICAL BIOSCIENCES AND ENGINEERING (2022)

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Article Medicine, General & Internal

Go To Travel Campaign and Travel-Associated Coronavirus Disease 2019 Cases: A Descriptive Analysis, July-August 2020

Asami Anzai et al.

Summary: The implementation of the Go To Travel campaign in Japan led to a significant increase in travel-associated COVID-19 cases, especially during the campaign period. The rise in domestic tourism may have contributed to the increase in cases.

JOURNAL OF CLINICAL MEDICINE (2021)

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Article Multidisciplinary Sciences

Impact of domestic travel restrictions on transmission of COVID-19 infection using public transportation network approach

Yayoi Murano et al.

Summary: The study found that domestic travel restrictions implemented by Japan on public transportation network are effective in preventing the spread of COVID-19. Research indicates that strategies such as locking down metropolitan areas and restricting domestic airline travel have similar impacts on reducing the risk of COVID-19 importation.

SCIENTIFIC REPORTS (2021)

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Article Medicine, General & Internal

Impact of temperature and relative humidity on the transmission of COVID-19: a modelling study in China and the United States

Jingyuan Wang et al.

Summary: This study found that temperature and relative humidity have a negative correlation with the transmission of COVID-19, but the impact of these two factors alone on the effective reproductive number is not strong enough to stop the pandemic.

BMJ OPEN (2021)

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Article Health Care Sciences & Services

An interrupted time series analysis of the lockdown policies in India: a national-level analysis of COVID-19 incidence

Winter M. Thayer et al.

Summary: India implemented multiple stages of lockdown policies which resulted in a reduction of COVID-19 incidence rate. The acceptance of the lockdown policy was seen in decreased mobility and slowing down of the epidemic spread. The policy effectively helped India 'flatten the curve' and provided additional time for pandemic preparedness and response.

HEALTH POLICY AND PLANNING (2021)

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Article Mechanics

Numerical study of COVID-19 spatial-temporal spreading in London

Jie Zheng et al.

Summary: This study investigates the movement of aerosolized viruses in a dense urban area in London, focusing on the spread and decay of COVID-19 from a hospital and railway stations. The findings suggest that virus concentration decreases rapidly near sources, but can travel up to hundreds of meters under certain meteorological conditions. The study emphasizes the importance of using face coverings in high-risk areas to reduce infection rates.

PHYSICS OF FLUIDS (2021)

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Article Multidisciplinary Sciences

Spatiotemporal pattern of COVID-19 spread in Brazil

Marcia C. Castro et al.

Summary: The study found that COVID-19 in Brazil is spreading rapidly across municipalities with distinct spatial and temporal patterns of clustering, trajectories, and speed. Analysis shows that inadequate policy measures have led to high transmission and mortality burdens. The current surge in cases and deaths, along with the circulation of concerning variants, highlights the need for government to strengthen prevention and control measures.

SCIENCE (2021)

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Article Multidisciplinary Sciences

Projecting a second wave of COVID-19 in Japan with variable interventions in high-risk settings

Sung-mok Jung et al.

Summary: This study analyzed the control measures for COVID-19 in Japan and possible exit strategies, finding that in Tokyo and Osaka, a 50% reduction in high-risk transmission is necessary to control the epidemic and minimize the risk of resurgence.

ROYAL SOCIETY OPEN SCIENCE (2021)

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Article Physics, Multidisciplinary

Understanding spatial propagation using metric geometry with application to the spread of COVID-19 in the United States

N. James et al.

Summary: This study introduces a new approach to analyze spatio-temporal data of COVID-19 spread in the United States using metric geometry. The research identifies the most profound geographic distribution changes of COVID-19 between May and June 2020, as well as the most concentrated geographic imprint in May 2020. Furthermore, it reveals a meaningful spatial reversion pattern in the epidemic spread across the US.

EPL (2021)

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Article Public, Environmental & Occupational Health

Mobility Patterns in Different Age Groups in Japan during the COVID-19 Pandemic: a Small Area Time Series Analysis through March 2021

Shuhei Nomura et al.

Summary: Through analyzing mobility data, we found that the degree and trend of mobility decline after the declaration of a state of emergency varies across age groups and even at the subregional level in Japan. Monitoring dynamic geographic and temporal mobility information stratified by detailed population characteristics can help guide strategies for responding to the current emergency situation and develop measures before the next possible resurgence of the pandemic.

JOURNAL OF URBAN HEALTH-BULLETIN OF THE NEW YORK ACADEMY OF MEDICINE (2021)

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Article Multidisciplinary Sciences

Temperature and population density influence SARS-CoV-2 transmission in the absence of nonpharmaceutical interventions

Thomas P. Smith et al.

Summary: Research has shown that factors such as temperature, humidity, ultraviolet radiation, and population density can impact the transmission of SARS-CoV-2. Policy interventions and reductions in mobility are major predictors of COVID-19 transmission rates, while summer weather cannot substitute for mitigation policies.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

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Article Multidisciplinary Sciences