Mapping DPT vaccine coverage in Africa

IHME recently published their first article about the VPD geospatial mapping in the Lancet: Mapping diphtheria-pertussis-tetanus vaccine coverage in Africa, 2000-2016: a spatial and temporal modelling study. You may also be interested in looking at the interactive data visualization tool, which allows you to compare coverage and change from 2000 to 2016 for penta 1, 3, and 1-3 dropout at various admin levels (national to 5x5 km resolution) A few notes on the viz tool:

  • It may not work well with some versions of Internet Explorer; I’ve had better luck with Chrome

  • In the bottom left “options” box, you can modify the “summary measure” (coverage vs. change in coverage), coverage metric, location, and “geospatial vs aggregate” (5x5 pixel view vs admin level aggregate data)


The main findings of the current (penta in Africa) analyses, including:

  • The proportion of children receiving the full infant series of three vaccinations against DPT3 increased in almost three quarters of districts in Africa between 2000 and 2016. In 29 of 52 nations studied, however, coverage with DPT3 varied by more than 25% at the district level, highlighting substantial variation within countries.

  • Of the 52 countries studied, only Morocco and Rwanda are estimated to have already met the district-level goal of 80% coverage.

  • At the local level, areas of DPT3 coverage at or below 25% were found in several countries, including Nigeria, Chad, Ethiopia, Somalia, and Angola.

  • Dropout rates exceeding 25% were identified in portions of Nigeria, Angola, Chad, Mali, Guinea, Liberia, Equatorial Guinea, Central African Republic, South Africa, Somalia, and Ethiopia.