Measuring Spatial Dependence for Infectious Disease Epidemiology.

Global spatial clustering is the tendency of points, here cases of infectious disease, to occur closer together than expected by chance. The extent of global clustering can provide a window into the spatial scale of disease transmission, thereby providing insights into the mechanism of spread, and i...

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Main Authors: Justin Lessler, Henrik Salje, M Kate Grabowski, Derek A T Cummings
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2016-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4873007?pdf=render
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author Justin Lessler
Henrik Salje
M Kate Grabowski
Derek A T Cummings
author_facet Justin Lessler
Henrik Salje
M Kate Grabowski
Derek A T Cummings
author_sort Justin Lessler
collection DOAJ
description Global spatial clustering is the tendency of points, here cases of infectious disease, to occur closer together than expected by chance. The extent of global clustering can provide a window into the spatial scale of disease transmission, thereby providing insights into the mechanism of spread, and informing optimal surveillance and control. Here the authors present an interpretable measure of spatial clustering, τ, which can be understood as a measure of relative risk. When biological or temporal information can be used to identify sets of potentially linked and likely unlinked cases, this measure can be estimated without knowledge of the underlying population distribution. The greater our ability to distinguish closely related (i.e., separated by few generations of transmission) from more distantly related cases, the more closely τ will track the true scale of transmission. The authors illustrate this approach using examples from the analyses of HIV, dengue and measles, and provide an R package implementing the methods described. The statistic presented, and measures of global clustering in general, can be powerful tools for analysis of spatially resolved data on infectious diseases.
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spelling doaj.art-a0bfd6cc343c48cc976984f33a6076032022-12-22T01:58:36ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01115e015524910.1371/journal.pone.0155249Measuring Spatial Dependence for Infectious Disease Epidemiology.Justin LesslerHenrik SaljeM Kate GrabowskiDerek A T CummingsGlobal spatial clustering is the tendency of points, here cases of infectious disease, to occur closer together than expected by chance. The extent of global clustering can provide a window into the spatial scale of disease transmission, thereby providing insights into the mechanism of spread, and informing optimal surveillance and control. Here the authors present an interpretable measure of spatial clustering, τ, which can be understood as a measure of relative risk. When biological or temporal information can be used to identify sets of potentially linked and likely unlinked cases, this measure can be estimated without knowledge of the underlying population distribution. The greater our ability to distinguish closely related (i.e., separated by few generations of transmission) from more distantly related cases, the more closely τ will track the true scale of transmission. The authors illustrate this approach using examples from the analyses of HIV, dengue and measles, and provide an R package implementing the methods described. The statistic presented, and measures of global clustering in general, can be powerful tools for analysis of spatially resolved data on infectious diseases.http://europepmc.org/articles/PMC4873007?pdf=render
spellingShingle Justin Lessler
Henrik Salje
M Kate Grabowski
Derek A T Cummings
Measuring Spatial Dependence for Infectious Disease Epidemiology.
PLoS ONE
title Measuring Spatial Dependence for Infectious Disease Epidemiology.
title_full Measuring Spatial Dependence for Infectious Disease Epidemiology.
title_fullStr Measuring Spatial Dependence for Infectious Disease Epidemiology.
title_full_unstemmed Measuring Spatial Dependence for Infectious Disease Epidemiology.
title_short Measuring Spatial Dependence for Infectious Disease Epidemiology.
title_sort measuring spatial dependence for infectious disease epidemiology
url http://europepmc.org/articles/PMC4873007?pdf=render
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AT henriksalje measuringspatialdependenceforinfectiousdiseaseepidemiology
AT mkategrabowski measuringspatialdependenceforinfectiousdiseaseepidemiology
AT derekatcummings measuringspatialdependenceforinfectiousdiseaseepidemiology