The effect of travel restrictions on the spread of the 2019 novel coronavirus (COVID-19) outbreak
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Abstract
Motivated by the rapid spread of coronavirus disease 2019 (COVID-19) in mainland China, we use a global metapopulation disease transmission model to project the impact of travel limitations on the national and international spread of the epidemic. The model is calibrated on the basis of internationally reported cases and shows that, at the start of the travel ban from Wuhan on 23 January 2020, most Chinese cities had already received many infected travelers. The travel quarantine of Wuhan delayed the overall epidemic progression by only 3 to 5 days in mainland China but had a more marked effect on the international scale, where case importations were reduced by nearly 80% until mid-February. Modeling results also indicate that sustained 90% travel restrictions to and from mainland China only modestly affect the epidemic trajectory unless combined with a 50% or higher reduction of transmission in the community.
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Most reviewed studies acknowledged that quarantine is one of the first public health measures to control and prevent further spread of respiratory infections caused by coronavirus.
“Most of the studies reviewed acknowledged that quarantine is one of the first public health measures to control and prevent further spread of respirational infections caused by the coronavirus (3, 11, 14, 22).”
From Definitions and psychological impacts of quarantine and strategies to reduce it: A review paper (2020) · cites this paper as [14]
The Discussion (page unavailable) reports that the Wuhan travel quarantine modestly delayed COVID-19’s spread, supporting the narrower point that quarantine can help limit spread. It does not characterize quarantine as one of the first public-health measures or establish that claim for coronavirus respiratory infections generally. (LLM, conf=0.83)
Experimental — accuracy not yet measuredThe reviewed studies referred to travel restrictions as travel quarantine, which included restriction or cancellation of overland air travel and public and private vehicles to areas of high outbreak risk.
“These studies referred to travel restrictions as travel quarantine, which included the restriction or cancellation of overland air travel and public and private vehicles to areas of a high risk of the outbreak (14).”
From Definitions and psychological impacts of quarantine and strategies to reduce it: A review paper (2020) · cites this paper as [14]
The Abstract calls the Wuhan travel ban a “travel quarantine,” and the International travel restrictions and transmissibility reduction section reports suspended or limited flights. The paper does not define travel quarantine as including restrictions on overland travel or public and private vehicles. (LLM, conf=0.84)
Experimental — accuracy not yet measuredUsing disease simulation on aggregated inter-province movement counts in China as derived from Baidu location based services, travel restrictions in Wuhan introduced on 23 January 2020 reduced the number of cases exported internationally by 70-80% until mid February 2020.
“Using disease simulation on aggregated inter-province movement counts in China as derived from Baidu location based services [101] has shown that the travel restrictions in Wuhan introduced on 23 January 2020 had reduced the number of cases exported internationally by 70–80% until mid February 2020.”
From Human-centred artificial intelligence for mobile health sensing: challenges and opportunities (2023) · cites this paper as [101]
Several studies across different countries have shown lockdowns' effectiveness.
“Several studies across different countries have shown their effectiveness [101,102].”
From Human-centred artificial intelligence for mobile health sensing: challenges and opportunities (2023) · cites this paper as [101]
South Korea's Trace strategy required affected travelers to undergo compulsory self-quarantine for 14 days before any swab test was issued.
“Affected travelers are required to undergo compulsory self-quarantine for 14 days (Chinazzi et al., 2020) before any test of swab is issued.”
From IoMT amid COVID-19 pandemic: Application, architecture, technology, and security (2021) · cites this paper as Chinazzi et al., 2020
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- Authors
- Chinazzi, M., Davis, J. T., Ajelli, M., Gioannini, C., Litvinova, M., Merler, S., Pastore y Piontti, A., Mu, K., Rossi, L., Sun, K., Viboud, C., Xiong, X., Yu, H., Halloran, M. E., Longini, I. M., & Vespignani, A.
- Affiliations
- Northeastern University (US)
- Fondazione Bruno Kessler (IT)
- Institute for Scientific Interchange (IT)
- Laboratory for the Modeling of Biological and Socio-technical Systems, Northeastern University, Boston, MA, USA.
- National Institutes of Health (US)
- Fogarty International Center, NIH, Bethesda, MD, USA.
- Fudan University (CN)
- University of Washington (US)
- University of Florida Health (US)
- Corresponding author
- Longini, Ira M.
- Vespignani, Alessandro
- ORCID
- Venue
- Science
- Published
- 2020-04-24
- Volume
- 368
- Issue
- 6489
- Pages
- 395-400
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- PMC
- PMC7164386
- OpenAlex
- W3010131837
- Cited by
- 3,694
- References
- 30
- Citations by year
- 2026: 87 · 2025: 173 · 2024: 244 · 2023: 405 · 2022: 644 · 2021: 1101 · 2020: 1036 · 2019: 1
- FWCI
- 127.02
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Science (publishedVersion, cc-by)
- medRxiv (acceptedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- PubMed Central (submittedVersion, cc-by-nc-nd)
- Funders
- U.S. Department of Health and Human Services
- National Institutes of Health (H2020, MIDAS-U54-GM111274)
- Horizon 2020 Framework Programme (EU‐H2020)
- National Institute of General Medical Sciences (U54GM111274)
- Topics
- Physical Sciences › Mathematics › Modeling and Simulation › COVID-19 epidemiological studies
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Mathematical and Theoretical Epidemiology and Ecology Models
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Travel-related health issues
- Keywords
- COVID-19 pandemic, travel restrictions, metapopulation model, epidemic projection, international spread, quarantine, epidemic control
- MeSH terms
- Betacoronavirus, Communicable Diseases, Imported, COVID-19, SARS-CoV-2, China, Computer Simulation, Disease Outbreaks, Humans, Pneumonia, Viral, Quarantine, Travel, Models, Statistical, Incidence, Coronavirus Infections, Internationality, Pandemics
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