Cited by 495Mathematical and Theoretical Epidemiology and Ecology ModelsInfluenza Virus Research StudiesCOVID-19 epidemiological studies

Human Mobility Networks, Travel Restrictions, and the Global Spread of 2009 H1N1 Pandemic

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Bajardi, Paolo, Poletto, Chiara, Ramasco, Jose J., Tizzoni, Michele, Colizza, Vittoria, Vespignani, Alessandro·2011·PLoS ONE

Abstract

After the emergence of the H1N1 influenza in 2009, some countries responded with travel-related controls during the early stage of the outbreak in an attempt to contain or slow down its international spread. These controls along with self-imposed travel limitations contributed to a decline of about 40% in international air traffic to/from Mexico following the international alert. However, no containment was achieved by such restrictions and the virus was able to reach pandemic proportions in a short time. When gauging the value and efficacy of mobility and travel restrictions it is crucial to rely on epidemic models that integrate the wide range of features characterizing human mobility and the many options available to public health organizations for responding to a pandemic. Here we present a comprehensive computational and theoretical study of the role of travel restrictions in halting and delaying pandemics by using a model that explicitly integrates air travel and short-range mobility data with high-resolution demographic data across the world and that is validated by the accumulation of data from the 2009 H1N1 pandemic. We explore alternative scenarios for the 2009 H1N1 pandemic by assessing the potential impact of mobility restrictions that vary with respect to their magnitude and their position in the pandemic timeline. We provide a quantitative discussion of the delay obtained by different mobility restrictions and the likelihood of containing outbreaks of infectious diseases at their source, confirming the limited value and feasibility of international travel restrictions. These results are rationalized in the theoretical framework characterizing the invasion dynamics of the epidemics at the metapopulation level.

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  • Mobility restrictions had been used and studied in the past, for example to stop the spread of Ebola in Sierra Leone and H1N1 influenza.

    “While in the above we reviewed COVID-19 related studies for their timely relevance, mobility restrictions had been used and studied in the past, for example to stop the spread of Ebola in Sierra Leone [108], H1N1 influenza [109], etc.”

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  1. [41]Murray JD 2005 Mathematical Biology. 3rd edition Berlin Springer Verlag

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Authors
Bajardi, P., Poletto, C., Ramasco, J. J., Tizzoni, M., Colizza, V., & Vespignani, A.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Institute for Scientific Interchange (IT)
Corresponding author
Vespignani, Alessandro
Venue
PLoS ONE
Published
2011-01-31
Volume
6
Issue
1
Pages
e16591
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2074329989
Cited by
495
References
39
Citations by year
2026: 8 · 2025: 18 · 2024: 24 · 2023: 38 · 2022: 42 · 2021: 94 · 2020: 94 · 2019: 21 · 2018: 18 · 2017: 20 · 2016: 19 · 2015: 21 · 2014: 32 · 2013: 22 · 2012: 17
FWCI
24.18
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion, cc-by)
  • HAL (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • PORTO@Iris (submittedVersion, cc-by)
  • Iris (University of Trento) (submittedVersion, cc-by)
  • PORTO Publications Open Repository TOrino (Politecnico di Torino) (submittedVersion)
Funders
  • Eli Lilly and Company
  • Lilly Endowment (2008 1639-000)
  • National Institutes of Health
  • Defense Threat Reduction Agency (1-0910039, DTRA-1-0910039)
  • National Institute on Drug Abuse (R21DA024259)
  • FP7 Ideas: European Research Council (204863)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Mathematical and Theoretical Epidemiology and Ecology Models
  • Health Sciences › Medicine › Epidemiology › Influenza Virus Research Studies
  • Physical Sciences › Mathematics › Modeling and Simulation › COVID-19 epidemiological studies
Keywords
2009 H1N1 pandemic, travel restrictions, human mobility networks, air travel, epidemic containment, pandemic spread, metapopulation dynamics, international travel restrictions
MeSH terms
Humans, Influenza, Human, Models, Theoretical, Travel, Influenza A Virus, H1N1 Subtype, Pandemics

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