Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus in Trinidad and Tobago
Trinidad and Tobago: Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus was 658.36 one-year-olds in 2023. ◆ Volatile
Latest (2023)
658.36 one-year-olds
Change on year
down 44.2%
World rank
158th
of 194 countries
All-time high
21,704 one-year-olds
in 1980
All-time low
181.02 one-year-olds
in 2018
Years of data
44
1980–2023
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus in Trinidad and Tobago, 1980–2023
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in one-year-olds.
Analysis
Trinidad and Tobago recorded 658.36 one-year-olds for number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus in 2023.
That represents a change of down 44.2% on the previous year and down 56.6% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus in Trinidad and Tobago peaked at 21,704 one-year-olds in 1980 and was at its lowest, 181.02 one-year-olds, in 2018.
That places Trinidad and Tobago 158th out of 194 countries with data for 2023, putting it in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus in Trinidad and Tobago, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 1980 | 21,704 one-year-olds | — |
| 1981 | 11,524 one-year-olds | -46.9% |
| 1982 | 14,330 one-year-olds | +24.3% |
| 1983 | 12,638 one-year-olds | -11.8% |
| 1984 | 11,123 one-year-olds | -12.0% |
| 1985 | 7,927 one-year-olds | -28.7% |
| 1986 | 9,466 one-year-olds | +19.4% |
| 1987 | 6,536 one-year-olds | -31.0% |
| 1988 | 5,419 one-year-olds | -17.1% |
| 1989 | 6,621 one-year-olds | +22.2% |
| 1990 | 4,943 one-year-olds | -25.3% |
| 1991 | 4,697 one-year-olds | -5.0% |
| 1992 | 3,229 one-year-olds | -31.3% |
| 1993 | 4,538 one-year-olds | +40.6% |
| 1994 | 3,453 one-year-olds | -23.9% |
| 1995 | 2,444 one-year-olds | -29.2% |
| 1996 | 2,351 one-year-olds | -3.8% |
| 1997 | 2,050 one-year-olds | -12.8% |
| 1998 | 1,785 one-year-olds | -12.9% |
| 1999 | 1,935 one-year-olds | +8.4% |
| 2000 | 1,912 one-year-olds | -1.2% |
| 2001 | 1,714 one-year-olds | -10.4% |
| 2002 | 758.84 one-year-olds | -55.7% |
| 2003 | 1,697 one-year-olds | +123.7% |
| 2004 | 1,125 one-year-olds | -33.7% |
| 2005 | 935.05 one-year-olds | -16.9% |
| 2006 | 1,500 one-year-olds | +60.4% |
| 2007 | 2,271 one-year-olds | +51.4% |
| 2008 | 1,905 one-year-olds | -16.1% |
| 2009 | 1,910 one-year-olds | +0.2% |
| 2010 | 1,911 one-year-olds | +0.1% |
| 2011 | 1,911 one-year-olds | +0.0% |
| 2012 | 1,525 one-year-olds | -20.2% |
| 2013 | 1,517 one-year-olds | -0.5% |
| 2014 | 1,505 one-year-olds | -0.8% |
| 2015 | 744.96 one-year-olds | -50.5% |
| 2016 | 552.45 one-year-olds | -25.8% |
| 2017 | 2,002 one-year-olds | +262.4% |
| 2018 | 181.02 one-year-olds | -91.0% |
| 2019 | 1,252 one-year-olds | +591.4% |
| 2020 | 702.48 one-year-olds | -43.9% |
| 2021 | 1,035 one-year-olds | +47.4% |
| 2022 | 1,180 one-year-olds | +13.9% |
| 2023 | 658.36 one-year-olds | -44.2% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 10,729 one-year-olds | 5,419 one-year-olds | 21,704 one-year-olds | 10 |
| 1990s | 3,143 one-year-olds | 1,785 one-year-olds | 4,943 one-year-olds | 10 |
| 2000s | 1,573 one-year-olds | 758.84 one-year-olds | 2,271 one-year-olds | 10 |
| 2010s | 1,310 one-year-olds | 181.02 one-year-olds | 2,002 one-year-olds | 10 |
| 2020s | 893.96 one-year-olds | 658.36 one-year-olds | 1,180 one-year-olds | 4 |
Countries ranked near Trinidad and Tobago
- 155 Portugal 824.42 one-year-olds compare
- 156 Sao Tome and Principe 812.63 one-year-olds compare
- 157 Cyprus 748.45 one-year-olds compare
- 159 Bahamas 564.59 one-year-olds compare
- 160 Costa Rica 525.6 one-year-olds compare
- 161 Saint Lucia 525.46 one-year-olds compare
More health data for Trinidad and Tobago
- Un projection of annual infant deaths, annual growth rate 0 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate -0.1463 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,638 deaths per 1,000 people (2090)
- Number of infants who die before age 1 24 deaths (2100)
- Population ages 75-79, female, annual growth rate 7.49 % change on previous year (2025)
- Population ages 75-79, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 75-79, female, per capita 0.0136 units per person (2025)
- Population ages 75-79, male, annual growth rate 7.49 % change on previous year (2025)
- Population ages 75-79, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 75-79, male, per capita 0.0097 units per person (2025)
Frequently asked questions
- What is number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus in Trinidad and Tobago?
- Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus in Trinidad and Tobago was 658.36 one-year-olds in 2023, according to WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus recorded in Trinidad and Tobago?
- The highest recorded value was 21,704 one-year-olds in 1980.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus recorded in Trinidad and Tobago?
- The lowest recorded value was 181.02 one-year-olds in 2018.
- How does Trinidad and Tobago rank for number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus?
- Trinidad and Tobago ranks 158th out of 194 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus rising or falling in Trinidad and Tobago?
- Over the last ten years it is down 56.6%. The long-run trend across the full record is volatile.
- Where does this Trinidad and Tobago data come from?
- The figures come from WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as part of Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus. Statizoid updates them automatically from the source API.
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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.