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Mapping the characteristics of un- and under-vaccinated children

Adelle Wigley, University of Southampton
Chigozie E Utazi, School of Geography and Environmental Science, University of Southampton
Andrew J. Tatem, University of Southampton
Natalia Tejedor-Garavito, University of Southampton

While there has been great success in increasing the coverage of childhood vaccines globally, certain populations remain un- or under-vaccinated. Expanding coverage requires vaccination strategies and interventions that identify and target those at risk, guided by the most current and detailed evidence regarding their size, characteristics, and spatial distribution. Through the integration of a range of geospatial data sets, including; population, vaccination coverage, travel-time, settlement type, and conflict locations, we estimate the numbers of un- or under-vaccinated children living within remote-rural, urban and peri-urban, and conflict-affected locations, at the district level. We find that substantial heterogeneities exist both between and within countries in terms of the characteristics and spatial distributions of those under or un-vaccinated, with over 11% of these living in remote-rural areas, more than 26% in urban and peri-urban areas, and up to 60% in rural non-remote settings. Whilst each of the datasets have inherent strengths and weaknesses, and simple decisions have been made in defining those at risk, we present here the first global sub-national evidence base of estimates on the numbers and distributions of those remining un- or under-vaccinated in these key groups.

Keywords: Geographic Information Systems (GIS), Children and youth, Health and morbidity, Harmonized data sets

See extended abstract.

  Presented in Session P5.