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Tracking progress towards universal childhood immunisation and the impact of global initiatives: a systematic analysis of three-dose diphtheria, tetanus, and pertussis immunisation coverage
Published in The Lancet, December 2008
The researchers found that while there have been continual improvements globally in the proportion of children immunized against DTP3, this has increased only gradually over time and not to the level suggested by countries’ official reports. For example, since the launch of GAVI in 1999, officially-reported estimates showed a 9% increase in DTP3 coverage, from 81% to 90%, while survey-based estimates only showed a 4.9% increase in global coverage, from 69% to 74%, over the same period.
Recommendations for future work
Data and Methods
Figure 1. Global DTP3 coverage (percentage) based on independent surveys and countries’ official reports (689KB PDF)
Figure 2. DTP3 coverage (percentage) for selected countries (1.14MB PDF)
Figure 3. Underlying data and survey-based estimates of DTP3 coverage (percentage) by country (2.5MB PDF)
Figure 4. A comparison of officially-reported data, WHO-UNICEF estimates, and survey-based estimates for DTP3 coverage by country (percentage) (1MB PDF)
Appendix 1. Survey data (27KB PDF)
Appendix 2. Validity of maternal self-report (19KB PDF)
Appendix 3. Inter-survey reliability of coverage estimates (14KB PDF)
Appendix 4. Estimating trends in DTP3 immunisation coverage (104KB PDF)
Appendix 5. Estimates of DTP3 coverage for 193 countries, 1985-2006 (317KB PDF)
Appendix 6. Comparison of survey-based coverage with officially reported, and WHO and UNICEF estimates for 193 countries, 1985-2006 (219KB PDF)
Appendix 7. Global Burden of Disease 2005 Study regions (22KB PDF)
Appendix 8. Sensitivity analysis (32KB PDF)
Data for download. Survey-based estimates of DTP3 coverage for WHO member countries, 1986-2006 (506KB xls)
Additional data for download. Underlying survey data used to determine survey-based estimates of DTP3 coverage (263KB xls)
For additional information, visit our Global Health Data Exchange (GHDx). The GHDx includes data records with information on more than 200 countries.