DTP3 Immunization Coverage

Number of children aged 12-23 months who received three doses of DTP vaccine divided by total children in that age group, multiplied by 100. Based on administrative records (vaccination registries) or household surveys (DHS, MICS). DTP3 is the third dose of a three-dose series typically given at 2, 4, and 6 months.

DTP3 coverage is a key indicator of immunization program strength and primary healthcare system functionality. It prevents three serious bacterial diseases: diphtheria (airway obstruction), tetanus (muscle spasms, lockjaw), and pertussis (whooping cough). DTP3 is also used as a proxy for overall immunization coverage because children who complete the series likely receive other vaccines.

Very Low: < 50% (inadequate - vaccine-preventable disease outbreaks likely) Low: 50-70% (insufficient - pockets of susceptibility remain) Moderate: 70-90% (approaching WHO target - most children protected) Good: 90-95% (WHO target met - herd immunity achieved) Excellent: > 95% (high coverage - disease elimination possible) WHO target: ≥ 90% national coverage, ≥ 80% in all districts Global average: ~86% (2023)

Coverage: 194 countries Update frequency: Annual Source: WHO/UNICEF Joint Reporting Form Limitations: Administrative data may overestimate coverage (numerator inflated, denominator underestimated). Survey data is more accurate but has 3-5 year lags. Does not track vaccine quality (cold chain), timeliness (on-schedule vs delayed), or dropout rates (started but didn't complete series).