Child immunization measures the percentage of children ages 12-23 months who received vaccinations before 12 months or at any time before the survey. A child is considered adequately immunized against diphtheria, pertussis (or whooping cough), and tetanus (DPT) after receiving three doses of vaccine.

Immunization against DPT as a share of children ages 12-23 months (%)

19902000200520102011201220132014201520162017201820192020202120222023
Mexico53.097.098.095.097.099.083.087.087.093.085.088.082.072.078.083.085.0
Canada88.089.093.089.087.091.091.091.091.091.091.091.091.092.092.092.092.0
United States90.094.096.095.096.094.094.095.095.095.094.094.094.093.094.094.094.0