Enhancing insights in sexually transmitted infection mapping: Syphilis in Forsyth County, North Carolina, a case study.

In 2008-2011 Forsyth County, North Carolina (NC) experienced a four-fold increase in syphilis rising to over 35 cases per 100,000 mirroring the 2021 state syphilis rate. Our methodology extends current models with: 1) donut geomasking to enhance resolution while protecting patient privacy; 2) a movi...

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Main Authors: Lani Fox, William C Miller, Dionne Gesink, Irene Doherty, Marc Serre
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2024-10-01
Series:PLoS Computational Biology
Online Access:https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1012464&type=printable
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author Lani Fox
William C Miller
Dionne Gesink
Irene Doherty
Marc Serre
author_facet Lani Fox
William C Miller
Dionne Gesink
Irene Doherty
Marc Serre
author_sort Lani Fox
collection DOAJ
description In 2008-2011 Forsyth County, North Carolina (NC) experienced a four-fold increase in syphilis rising to over 35 cases per 100,000 mirroring the 2021 state syphilis rate. Our methodology extends current models with: 1) donut geomasking to enhance resolution while protecting patient privacy; 2) a moving window uniform grid to control the modifiable areal unit problem, edge effect and remove kriging islands; and 3) mitigating the "small number problem" with Uniform Model Bayesian Maximum Entropy (UMBME). Data is 2008-2011 early syphilis cases reported to the NC Department of Health and Human Services for Forsyth County. Results were assessed using latent rate theory cross validation. We show combining a moving window and a UMBME analysis with geomasked data effectively predicted the true or latent syphilis rate 5% to 26% more accurate than the traditional, geopolitical boundary method. It removed kriging islands, reduced background incidence rate to 0, relocated nine outbreak hotspots to more realistic locations, and elucidated hotspot connectivity producing more realistic geographical patterns for targeted insights. Using the Forsyth outbreak as a case study showed how the outbreak emerged from endemic areas spreading through sexual core transmitters and contextualizing the outbreak to current and past outbreaks. As the dynamics of sexually transmitted infections spread have changed to online partnership selection and demographically to include more women, partnership selection continues to remain highly localized. Furthermore, it is important to present methods to increase interpretability and accuracy of visual representations of data.
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spelling doaj-art-e0be1ea883864a99be701a919f3c13352025-02-05T05:30:42ZengPublic Library of Science (PLoS)PLoS Computational Biology1553-734X1553-73582024-10-012010e101246410.1371/journal.pcbi.1012464Enhancing insights in sexually transmitted infection mapping: Syphilis in Forsyth County, North Carolina, a case study.Lani FoxWilliam C MillerDionne GesinkIrene DohertyMarc SerreIn 2008-2011 Forsyth County, North Carolina (NC) experienced a four-fold increase in syphilis rising to over 35 cases per 100,000 mirroring the 2021 state syphilis rate. Our methodology extends current models with: 1) donut geomasking to enhance resolution while protecting patient privacy; 2) a moving window uniform grid to control the modifiable areal unit problem, edge effect and remove kriging islands; and 3) mitigating the "small number problem" with Uniform Model Bayesian Maximum Entropy (UMBME). Data is 2008-2011 early syphilis cases reported to the NC Department of Health and Human Services for Forsyth County. Results were assessed using latent rate theory cross validation. We show combining a moving window and a UMBME analysis with geomasked data effectively predicted the true or latent syphilis rate 5% to 26% more accurate than the traditional, geopolitical boundary method. It removed kriging islands, reduced background incidence rate to 0, relocated nine outbreak hotspots to more realistic locations, and elucidated hotspot connectivity producing more realistic geographical patterns for targeted insights. Using the Forsyth outbreak as a case study showed how the outbreak emerged from endemic areas spreading through sexual core transmitters and contextualizing the outbreak to current and past outbreaks. As the dynamics of sexually transmitted infections spread have changed to online partnership selection and demographically to include more women, partnership selection continues to remain highly localized. Furthermore, it is important to present methods to increase interpretability and accuracy of visual representations of data.https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1012464&type=printable
spellingShingle Lani Fox
William C Miller
Dionne Gesink
Irene Doherty
Marc Serre
Enhancing insights in sexually transmitted infection mapping: Syphilis in Forsyth County, North Carolina, a case study.
PLoS Computational Biology
title Enhancing insights in sexually transmitted infection mapping: Syphilis in Forsyth County, North Carolina, a case study.
title_full Enhancing insights in sexually transmitted infection mapping: Syphilis in Forsyth County, North Carolina, a case study.
title_fullStr Enhancing insights in sexually transmitted infection mapping: Syphilis in Forsyth County, North Carolina, a case study.
title_full_unstemmed Enhancing insights in sexually transmitted infection mapping: Syphilis in Forsyth County, North Carolina, a case study.
title_short Enhancing insights in sexually transmitted infection mapping: Syphilis in Forsyth County, North Carolina, a case study.
title_sort enhancing insights in sexually transmitted infection mapping syphilis in forsyth county north carolina a case study
url https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1012464&type=printable
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