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Spatial methods for infectious disease outbreak investigations: systematic literature review
- Catherine M Smith1 , Steven C Le Comber2 , Hannah Fry3 , Matthew Bull4 , Steve Leach4 , Andrew C Hayward1
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View Affiliations Hide AffiliationsAffiliations: 1 UCL Department of Infectious Disease Informatics, Farr Institute of Health Informatics Research, University College London, London, United Kingdom 2 School of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom 3 Centre for Advanced Spatial Analysis, University College London, London, United Kingdom 4 Emergency Response Department Science and Technology, Public Health England, Porton Down, United KingdomCatherine Smithcatherine.smith.13 ucl.ac.uk
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Citation style for this article: Smith Catherine M, Le Comber Steven C, Fry Hannah, Bull Matthew, Leach Steve, Hayward Andrew C. Spatial methods for infectious disease outbreak investigations: systematic literature review. Euro Surveill. 2015;20(39):pii=30026. https://doi.org/10.2807/1560-7917.ES.2015.20.39.30026 Received: 19 Feb 2015; Accepted: 02 Sept 2015
Abstract
Investigations of infectious disease outbreaks are conventionally framed in terms of person, time and place. Although geographic information systems have increased the range of tools available, spatial analyses are used relatively infrequently. We conducted a systematic review of published reports of outbreak investigations worldwide to estimate the prevalence of spatial methods, describe the techniques applied and explore their utility. We identified 80 reports using spatial methods published between 1979 and 2013, ca 0.4% of the total number of published outbreaks. Environmental or waterborne infections were the most commonly investigated, and most reports were from the United Kingdom. A range of techniques were used, including simple dot maps, cluster analyses and modelling approaches. Spatial tools were usefully applied throughout investigations, from initial confirmation of the outbreak to describing and analysing cases and communicating findings. They provided valuable insights that led to public health actions, but there is scope for much wider implementation and development of new methods.
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