Chad vs United States of America: Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus
Chad
242,358 one-year-olds
in 2023
United States of America
223,065 one-year-olds
in 2023
Chad rank
20th
United States of America rank
21st
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus over time
- Chad
- United States of America
How they compare
Chad currently reports 242,358 one-year-olds against 223,065 one-year-olds in United States of America, a difference of 19,293 one-year-olds.
That makes Chad's figure about 1.1 times United States of America's.
The two have swapped places 4 times across 41 shared years of data; in 1983 it was Chad ahead.
Chad ranks 20th and United States of America ranks 21st of 194 countries.
Across the 5 decades both report, Chad averaged higher in 4 and United States of America in 1.
Head to head by decade
| Decade | Chad | United States of America | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 192,264 one-year-olds | 134,418 one-year-olds | 57,846 one-year-olds | Chad |
| 1990s | 233,446 one-year-olds | 321,730 one-year-olds | 88,283 one-year-olds | United States of America |
| 2000s | 313,047 one-year-olds | 187,222 one-year-olds | 125,824 one-year-olds | Chad |
| 2010s | 344,931 one-year-olds | 214,232 one-year-olds | 130,698 one-year-olds | Chad |
| 2020s | 262,024 one-year-olds | 232,497 one-year-olds | 29,527 one-year-olds | Chad |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus, Chad or United States of America?
- Chad, at 242,358 one-year-olds against 223,065 one-year-olds in United States of America as of 2023.
- What is the difference in number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus between Chad and United States of America?
- 19,293 one-year-olds, with Chad ahead.
- How many years of comparable data are there for Chad and United States of America?
- 41 years are reported by both, from 1983 to 2023.
- How do Chad and United States of America rank globally for number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus?
- Chad ranks 20th and United States of America ranks 21st of 194 countries.
- Where does this data come from?
- WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Number of one-year-olds who have not had three doses of the combined diphtheria, tetanus and pertussis vaccine in a given year.