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  1. Article ; Online: Trade-offs between mobility restrictions and transmission of SARS-CoV-2.

    Gösgens, Martijn / Hendriks, Teun / Boon, Marko / Steenbakkers, Wim / Heesterbeek, Hans / van der Hofstad, Remco / Litvak, Nelly

    Journal of the Royal Society, Interface

    2021  Volume 18, Issue 175, Page(s) 20200936

    Abstract: ... to extend the often-used SEIR models to include mobility between regions. We quantify the trade-off between ... both economic activity and virus spread. We use mobility data in the form of counts of travellers between regions ... where mobility is allowed within these regions, and disallowed between them. We propose heuristic methods ...

    Abstract In their response to the COVID-19 outbreak, governments face the dilemma to balance public health and economy. Mobility plays a central role in this dilemma because the movement of people enables both economic activity and virus spread. We use mobility data in the form of counts of travellers between regions, to extend the often-used SEIR models to include mobility between regions. We quantify the trade-off between mobility and infection spread in terms of a single parameter, to be chosen by policy makers, and propose strategies for restricting mobility so that the restrictions are minimal while the infection spread is effectively limited. We consider restrictions where the country is divided into regions, and study scenarios where mobility is allowed within these regions, and disallowed between them. We propose heuristic methods to approximate optimal choices for these regions. We evaluate the obtained restrictions based on our trade-off. The results show that our methods are especially effective when the infections are highly concentrated, e.g. around a few municipalities, as resulting from superspreading events that play an important role in the spread of COVID-19. We demonstrate our method in the example of the Netherlands. The results apply more broadly when mobility data are available.
    MeSH term(s) COVID-19/epidemiology ; COVID-19/transmission ; Disease Outbreaks ; Humans ; Models, Biological ; SARS-CoV-2 ; Travel
    Language English
    Publishing date 2021-02-24
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2156283-0
    ISSN 1742-5662 ; 1742-5689
    ISSN (online) 1742-5662
    ISSN 1742-5689
    DOI 10.1098/rsif.2020.0936
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: The trade-off between mobility and vaccination for COVID-19 control: a metapopulation modelling approach.

    Saldaña, Fernando / Velasco-Hernández, Jorge X

    Royal Society open science

    2021  Volume 8, Issue 6, Page(s) 202240

    Abstract: ... and 95%, the percentage reduction in the total number of SARS-CoV-2 infections is between 30% and 50 ... hopes for the imminent availability of an effective and safe vaccine against the SARS-CoV-2 ... of the transmission dynamics in comparison to mobility restrictions. The analysis is based on a metapopulation ...

    Abstract November 2020 received a string of encouraging results from leading vaccine developers raising hopes for the imminent availability of an effective and safe vaccine against the SARS-CoV-2. In the present work, we discuss the theoretical impact of introducing a vaccine across a range of scenarios. In particular, we investigate how vaccination coverage, efficacy and delivery time affect the control of the transmission dynamics in comparison to mobility restrictions. The analysis is based on a metapopulation epidemic model structured by risk. We perform a global sensitivity analysis using the Sobol method. Our analysis suggest that the reduction of mobility among patches plays a significant role in the mitigation of the disease close to the effect of immunization coverage of 30% achieved in four months. Moreover, for an immunization coverage between 20% and 50% achieved in the first half of 2021 with a vaccine efficacy between 70% and 95%, the percentage reduction in the total number of SARS-CoV-2 infections is between 30% and 50% by the end of 2021 in comparison with the no vaccination scenario.
    Language English
    Publishing date 2021-06-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 2787755-3
    ISSN 2054-5703
    ISSN 2054-5703
    DOI 10.1098/rsos.202240
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The trade-off between mobility and vaccination for COVID-19 control

    Fernando Saldaña / Jorge X. Velasco-Hernández

    Royal Society Open Science, Vol 8, Iss

    a metapopulation modelling approach

    2021  Volume 6

    Abstract: ... and 95%, the percentage reduction in the total number of SARS-CoV-2 infections is between 30% and 50 ... hopes for the imminent availability of an effective and safe vaccine against the SARS-CoV-2 ... of the transmission dynamics in comparison to mobility restrictions. The analysis is based on a metapopulation ...

    Abstract November 2020 received a string of encouraging results from leading vaccine developers raising hopes for the imminent availability of an effective and safe vaccine against the SARS-CoV-2. In the present work, we discuss the theoretical impact of introducing a vaccine across a range of scenarios. In particular, we investigate how vaccination coverage, efficacy and delivery time affect the control of the transmission dynamics in comparison to mobility restrictions. The analysis is based on a metapopulation epidemic model structured by risk. We perform a global sensitivity analysis using the Sobol method. Our analysis suggest that the reduction of mobility among patches plays a significant role in the mitigation of the disease close to the effect of immunization coverage of 30% achieved in four months. Moreover, for an immunization coverage between 20% and 50% achieved in the first half of 2021 with a vaccine efficacy between 70% and 95%, the percentage reduction in the total number of SARS-CoV-2 infections is between 30% and 50% by the end of 2021 in comparison with the no vaccination scenario.
    Keywords COVID-19 ; SARS-CoV-2 ; epidemic model ; vaccination ; disease modelling ; Science ; Q
    Language English
    Publishing date 2021-06-01T00:00:00Z
    Publisher The Royal Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: The trade-off between mobility and vaccination for COVID-19 control: a metapopulation modeling approach

    Saldana, Fernando / Velasco-Hernandez, Jorge X.

    medRxiv

    Abstract: ... hopes for the imminent availability of an effective and safe vaccine against the SARS-CoV-2 ... 95\%, the percentage reduction in the total number of SARS-CoV-2 infections is between 30\%-50 ... of the transmission dynamics in comparison to mobility restrictions. The analysis is based on a metapopulation ...

    Abstract November 2020 received a string of encouraging results from leading vaccine developers raising hopes for the imminent availability of an effective and safe vaccine against the SARS-CoV-2. In the present work, we discuss the theoretical impact of introducing a vaccine across a range of scenarios . In particular, we investigate how vaccination coverage, efficacy, and delivery time affect the control of the transmission dynamics in comparison to mobility restrictions. The analysis is based on a metapopulation epidemic model structured by risk. We perform a global sensitivity analysis using the Sobol method. Our analysis suggest that the reduction of mobility among patches play a significant role in the mitigation of the disease close to the effect of immunization coverage of 30\% achieved in 4 months. Moreover, for an immunization coverage between 20\%-50\% achieved in the first half of 2021 with a vaccine efficacy between 70\%-95\%, the percentage reduction in the total number of SARS-CoV-2 infections is between 30\%-50\% by the end of 2021 in comparison with the no vaccination scenario.
    Keywords covid19
    Language English
    Publishing date 2020-12-11
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2020.12.09.20246538
    Database COVID19

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