Geospatial analytics to evaluate point-of-dispensing sites for mass immunizations in Allegheny County, Pennsylvania.

TitleGeospatial analytics to evaluate point-of-dispensing sites for mass immunizations in Allegheny County, Pennsylvania.
Publication TypeJournal Article
Year of Publication2013
AuthorsEverett KH, Potter MA, Wheaton WD, Gleason SM, Brown ST, Lee BY
JournalJ Public Health Manag Pract
Volume19 Suppl 2
PaginationS31-6
Date Published2013 Sep-Oct
ISSN1550-5022
KeywordsAlgorithms, Geography, Medical, Health Services Accessibility, Humans, Immunization Programs, Pennsylvania, Rural Population
Abstract

CONTEXT: Public health agencies use mass immunization locations to quickly administer vaccines to protect a population against an epidemic. The selection of such locations is frequently determined by available staffing levels and in some places, not all potential sites can be opened, often because of a lack of resources. Public health agencies need assistance in determining which n sites are the prime ones to open given available staff to minimize travel time and travel distance for those in the population who need to get to a site to receive treatment.OBJECTIVE: Employ geospatial analytical methods to identify the prime n locations from a predetermined set of potential locations (eg, schools) and determine which locations may not be able to achieve the throughput necessary to reach the herd immunity threshold based on varying R0 values.DESIGN: Spatial location-allocation algorithms were used to select the ideal n mass vaccination locations.SETTING: Allegheny County, Pennsylvania, served as the study area.MAIN OUTCOME MEASURES: The most favorable sites were selected and the number of individuals required to be vaccinated to achieve the herd immunity threshold for a given R0, ranging from 1.5 to 7, was determined. Locations that did not meet the Centers for Disease Control and Prevention throughput recommendation for smallpox were identified.RESULTS: At R0 = 1.5, all mass immunization locations met the required throughput to achieve the herd immunity threshold within 5 days. As R0s increased from 2 to 7, an increasing number of sites were inadequate to meet throughput requirements.CONCLUSIONS: Identifying the top n sites and categorizing those with throughput challenges allows health departments to adjust staffing, shift length, or the number of sites. This method has the potential to be expanded to select immunization locations under a number of additional scenarios.

DOI10.1097/PHH.0b013e3182941a5a
Alternate JournalJ Public Health Manag Pract
PubMed ID23903392
PubMed Central IDPMC3808194
Grant List1U54GM088491-01 / GM / NIGMS NIH HHS / United States
5U36CD300430 / CD / ODCDC CDC HHS / United States
U54 GM088491 / GM / NIGMS NIH HHS / United States
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