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    Modelling of Vaccination Strategies for Epidemics using Evolutionary Computation

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    Author
    Dube, Michael
    Houghten, Sheridan
    Ashlock, Daniel
    Keyword
    Vaccination Strategies
    Evolutionary Computation
    Contact network
    
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    URI
    http://hdl.handle.net/10464/16897
    Abstract
    Personal contact networks that represent social interactions can be used to identify who can infect whom during the spread of an epidemic. The structure of a personal contact network has great impact upon both epidemic duration and the total number of infected individuals. A vaccine, with varying degrees of success, can reduce both the length and spread of an epidemic, but in the case of a limited supply of vaccine a vaccination strategy must be chosen, and this has a significant effect on epidemic behaviour.In this study we consider four different vaccination strategies and compare their effects upon epidemic duration and spread. These are random vaccination, high degree vaccination, ring vaccination, and the base case of no vaccination. All vaccinations are applied as the epidemic progresses, as opposed to in advance. The strategies are initially applied to static personal contact networks that are known ahead of time. They are then applied to personal contact networks that are evolved as the vaccination strategy is applied. When any form of vaccination is applied, all strategies reduce both duration and spread of the epidemic. When applied to a static network, random vaccination performs poorly in terms of reducing epidemic duration in comparison to strategies that take into account connectivity of the network. However, it performs surprisingly well when applied on the evolved networks, possibly because the evolutionary algorithm is unable to take advantage of a fixed strategy.
    ae974a485f413a2113503eed53cd6c53
    10.1109/cec48606.2020.9185662
    Scopus Count
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    Computer Science

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