Estimated number of zero-dose and incompletely vaccinated children* and estimated coverage with first and third dose of diphtheria-tetanus-pertussis–containing vaccine, by World Health Organization Region — worldwide, 2019, 2021, and 2022
Abbreviations: DTPcv1 = first dose of diphtheria-tetanus-pertussis-containing vaccine; DTPcv3 = third dose of diphtheria-tetanus-pertussis-containing vaccine.
* Zero-dose children are surviving children who lack documentation of receipt of any dose of DTPcv by age 12 months (i.e., DTPcv1). Incompletely vaccinated children are those who received at least DTPcv1 but not DTPcv3.