Did Visitors Cause Outbreaks of COVID-19 Dominated by the Original Strain? Ex Post Evaluation of Long-Distance Travel Bans

Kurita, Junko; Iwasaki, Yoshitaro

doi:10.51094/jxiv.226

##article.authors##

Kurita, Junko Department of Nursing, Faculty of Sport and Health Science, Daito Bunka University
Iwasaki, Yoshitaro Iwasaki Industrial Corporation

DOI:

https://doi.org/10.51094/jxiv.226

キーワード:

airport users、 COVID-19、 effective reproduction number、 Go To Travel Campaign、 hotel visitors、 mobility

抄録

Background: Long-distance travel was banned while the SARS-Cov-2 original strain was dominant. Nevertheless, that policy had not been adequately evaluated.

Object: We evaluated long-distance travel effects on infectivity, considering climate conditions, mobility, and countermeasures including the “Go To Travel Campaign” (GTTC) travel subsidy policy.

Method: We regressed the effective reproduction number R(t) on long-distance travel, temperature, humidity, mobility, and countermeasures such as the emergency state declaration or GTTC in Kagoshima prefecture. The number of airport limousine bus users represented long-distance travel volumes. The study assessed data from May 16, 2020 through February 2022, before variant strains emerged and became dominant.

Results: Estimation results indicate declining infectivity along with long-distance travel volumes. Moreover, R(t) was lower during GTTC.

Discussion and Conclusion: Policies banning long-distance travel had little legitimacy or rationale. Long-distance travel with appropriate infection control measures did not spread COVID-19 infection in tourist areas.

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引用文献

The Nippon Communications Foundation, Japan to Suspend Go To Travel Program Entirely Politics Dec 15, 2020 [accessed on November 22,2022] https://www.nippon.com/en/news/yjj2020121400645/japan-to-suspend-go-to-travel-program-entirely.html

Shi P, Dong Y, Yan H, Zhao C, Li X, Liu W, He M, Tang S, Xi S. Impact of temperature on the dynamics of the COVID-19 outbreak in China. Sci. Total Environ. 2020;728:138890.

Tobias A, Molina T. Is temperature reducing the transmission of COVID-19? Environ. Res. 2020;186:109553.

Yao Y, Pan J, Liu Z, Meng X, Wang W, Kan H, Wang W. No association of COVID-19 transmission with temperature or UV radiation in Chinese cities. Eur. Respir. J. 2020;55:2000517.

Walrand S. Autumn COVID-19 surge dates in Europe correlated to latitudes, not to temperature–humidity, pointing to vitamin D as contributing factor. Scientific Reports. 2021;11(1981) https://www.nature.com/articles/s41598-021-81419-w

Kurita J, Sugawara T, Ohkusa Y. Mobility data can reveal the entire COVID1-19 outbreak course in Japan. MEDRXIV/2020/081315 https://www.medrxiv.org/content/10.1101/2020.04.26.20081315v3

Bergman N, Fishman R. Mobility Reduction and Covid-19 Transmission Rates. https://doi.org/10.1101/2020.05.06.20093039

Flaxman S, Mishra S, Gandy A, Unwin HJT, Mellan TA, Coupland H, Whittaker C, Zhu H, Berah T, Eaton JW, Monod M, Imperial College COVID-19 Response Team; Ghani AC, Donnelly CA, Riley S, Vollmer MAC, Ferguson NM, Okell LC, Bhatt S. Estimating the effects of non-pharmaceutical interventions on COVID-19 in Europe. Nature. 2020;584(7820):257–261. doi: 10.1038/s41586-020-2405-7.

Li Y, Campbell H, Kulkarni D, Harpur A, Nundy M, Wang X, Nair H, for the Usher Network for COVID-19 Evidence Reviews (UNCOVER) group. The temporal association of introducing and lifting non-pharmaceutical interventions with the time-varying reproduction number (R) of SARS-CoV-2: a modelling study across 131 countries. Lancet Infect. Dis. 2021;21:193–202. DOI:https://doi.org/10.1016/S1473-3099(20)30785-4?

Larrosa JMC. SARS-CoV-2 in Argentina: Lockdown, mobility, and contagion. J. Med. Virol. 2020. doi: 10.1002/jmv.26659. https://onlinelibrary.wiley.com/doi/10.1002/jmv.26659

Japan Ministry of Health, Labour and Welfare. Countermeasure for variant strain of COVID-19 reported at the 32nd Advisory board for infection control to COVID-19. https://www.mhlw.go.jp/content/10900000/000774322.pdf (in Japanese) [accessed on May 19, 2021]

Leung K, Shum MHH, Leung GM, Lam TTY, Wu JT. Early transmissibility assessment of the N501Y mutant strains of SARS-CoV-2 in the United Kingdom, October to November 2020. Euro. Surveill. 2021;26:2002106. doi: 10.2807/1560-7917.ES.2020.26.1.2002106.

Graham MS, Sudre CH, May A, Antonelli M, Murray B, Varsavsky T, Klaser K, Canas LS, Molteni E, Modat M, Drew DA, Nguyen LH, Polidori L, Selvachandran S, Hu C, Capdevila J; COVID-19 Genomics UK (COG-UK) Consortium, Hammers A, Chan AT, Wolf J, Spector TD, Steves CJ, Ourselin S. Changes in symptomatology, reinfection, and transmissibility associated with the SARS-CoV-2 variant B.1.1.7: an ecological study. Lancet Public Health. 2021;6:e335–e345.

Davies NG, Abbott S, Barnard RC, Jarvis CI, Kucharski AJ, Munday JD, Pearson CAB, Russell TW, Tully DC, Washburne AD, Wenseleers T, Gimma A, Waites W, Wong KLM, van Zandvoort K, Silverman JD; CMMID COVID-19 Working Group; COVID-19 Genomics UK (COG-UK) Consortium, Diaz-Ordaz K, Keogh R, Eggo RM, Funk S, Jit M, Atkins KE, Edmunds WJ. Estimated transmissibility and impact of SARS-CoV-2 lineage B.1.1.7 in England. Science. 2021;372(6538):eabg3055. doi: 10.1126/science.abg3055.

Zhao S, Lou J, Cao L, Zheng H, Chong MKC, Chen Z, Chan RWY, Zee BCY, Chan PKS, Wang MH. Quantifying the transmission advantage associated with N501Y substitution of SARS-CoV-2 in the UK: an early data-driven analysis. J. Travel Med. 2021;28:taab011.

Kagoshima prefecture office. Outbreak situation in Kagoshima prefecture https://www.pref.kagoshima.jp/kenko-fukushi/covid19/hassei/index.html#hassei (in Japanese) [accessed on May 1, 2021].

Kurita J, Sugawara T, Ohkusa Y. Estimating Event Ban Effects on COVID-19 Outbreak in Japan. Journal of Health Science and Development. 2021;4: https://www.innovationinfo.org/articles/JHSD/JHSD-137.pdf

Kurita J, Sugawara T, Ohkusa Y. Effects of climate conditions, mobility trends, and countermeasures on the COVID-19 outbreak in Japan https://www.medrxiv.org/content/10.1101/2020.12.29.20248977v1?versioned=true

Kurita J, Sugawara T, Ohkusa Y. Estimating event ban effects on COVID-19 outbreak in Japan https://www.medrxiv.org/content/10.1101/2020.12.29.20248977v6

Anzai A, Nishiura H. “Go To Travel” Campaign and Travel-Associated Coronavirus Disease 2019 Cases: A Descriptive Analysis, July–August 2020. J. Clin. Med. 2021; 10:398. https://doi.org/10.3390/jcm10030398

Kimball A, Hatfield KM, Arons M, James A, Taylor J, Spicer K, Bardossy AC, Oakley LP, Tanwar S, Chisty Z, Bell JM, Methner M, Harney J, Jacobs JR, Carlson CM, McLaughlin HP, Stone N, Clark S, Brostrom-Smith C, Page LC, Kay M, Lewis J, Russell D, Hiatt B, Gant J, Duchin JS, Clark TA, Honein MA, Reddy SC, Jernigan JA; Public Health? Seattle & King County; CDC COVID-19 Investigation Team. Asymptomatic and Presymptomatic SARS-CoV-2 Infections in Residents of a Long-Term Care Skilled Nursing Facility – King County, Washington, March 2020. Morb. Mortal. Wkly. Rep. 2020;69:377–381.

Kagoshima City Tourism Association, Statistics on Tourism, https://www.city.kagoshima.lg.jp/kan-senryaku/miraisenryaku/documents/r3kankoutoukei.pdf (in Japanese) [accessed on November 11, 2022]

European Centre for Disease Prevention and Control. Epidemiological update: SARS-CoV-2 Omicron sub-lineages BA.4 and BA.5. https://www.ecdc.europa.eu/en/news-events/epidemiological-update-sars-cov-2-omicron-sub-lineages-ba4-and-ba5 [accessed on August 22, 2022]

National Institute of Infectious Diseases. Updated Situation of COVID-19 Outbreak (July 13,2022) https://www.niid.go.jp/niid/ja/2019-ncov/11309-covid19-ab90th.html (in Japanese) [accessed on August 20, 2022]