Number of one-year-olds who are not vaccinated against diphtheria in Tanzania
Tanzania: Number of one-year-olds who are not vaccinated against diphtheria was 0.424 one-year-olds per square kilometre in 2023. ▼ Falling
Number of one-year-olds who are not vaccinated against diphtheria in Tanzania, 1980–2023
Source: Statizoid (derived). Measured in one-year-olds per square kilometre.
Analysis
Tanzania recorded 0.424 one-year-olds per square kilometre for number of one-year-olds who are not vaccinated against diphtheria in 2023.
That represents a change of up 33.4% on the previous year and up 146.7% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Tanzania peaked at 0.4635 one-year-olds per square kilometre in 1982 and was at its lowest, 0.0594 one-year-olds per square kilometre, in 2014.
Tanzania ranks 42nd of 192 countries on this measure, in the top quarter.
The long-run direction has been consistently falling across the 44 years of available data.
Number of one-year-olds who are not vaccinated against diphtheria in Tanzania, year by year
| Year | one-year-olds per square kilometre | Change |
|---|---|---|
| 1980 | 0.3629 one-year-olds per square kilometre | — |
| 1981 | 0.408 one-year-olds per square kilometre | +12.4% |
| 1982 | 0.4635 one-year-olds per square kilometre | +13.6% |
| 1983 | 0.4551 one-year-olds per square kilometre | -1.8% |
| 1984 | 0.4078 one-year-olds per square kilometre | -10.4% |
| 1985 | 0.3271 one-year-olds per square kilometre | -19.8% |
| 1986 | 0.2623 one-year-olds per square kilometre | -19.8% |
| 1987 | 0.2155 one-year-olds per square kilometre | -17.8% |
| 1988 | 0.1568 one-year-olds per square kilometre | -27.2% |
| 1989 | 0.2461 one-year-olds per square kilometre | +56.9% |
| 1990 | 0.2403 one-year-olds per square kilometre | -2.3% |
| 1991 | 0.2108 one-year-olds per square kilometre | -12.3% |
| 1992 | 0.1919 one-year-olds per square kilometre | -9.0% |
| 1993 | 0.1959 one-year-olds per square kilometre | +2.1% |
| 1994 | 0.1886 one-year-olds per square kilometre | -3.7% |
| 1995 | 0.2302 one-year-olds per square kilometre | +22.1% |
| 1996 | 0.2255 one-year-olds per square kilometre | -2.0% |
| 1997 | 0.2721 one-year-olds per square kilometre | +20.7% |
| 1998 | 0.2793 one-year-olds per square kilometre | +2.6% |
| 1999 | 0.3277 one-year-olds per square kilometre | +17.3% |
| 2000 | 0.295 one-year-olds per square kilometre | -10.0% |
| 2001 | 0.1872 one-year-olds per square kilometre | -36.5% |
| 2002 | 0.1627 one-year-olds per square kilometre | -13.1% |
| 2003 | 0.076 one-year-olds per square kilometre | -53.3% |
| 2004 | 0.0784 one-year-olds per square kilometre | +3.2% |
| 2005 | 0.1625 one-year-olds per square kilometre | +107.4% |
| 2006 | 0.1681 one-year-olds per square kilometre | +3.4% |
| 2007 | 0.293 one-year-olds per square kilometre | +74.3% |
| 2008 | 0.2451 one-year-olds per square kilometre | -16.3% |
| 2009 | 0.266 one-year-olds per square kilometre | +8.5% |
| 2010 | 0.1622 one-year-olds per square kilometre | -39.0% |
| 2011 | 0.1835 one-year-olds per square kilometre | +13.2% |
| 2012 | 0.1493 one-year-olds per square kilometre | -18.6% |
| 2013 | 0.1719 one-year-olds per square kilometre | +15.1% |
| 2014 | 0.0594 one-year-olds per square kilometre | -65.4% |
| 2015 | 0.0821 one-year-olds per square kilometre | +38.3% |
| 2016 | 0.1683 one-year-olds per square kilometre | +104.9% |
| 2017 | 0.2159 one-year-olds per square kilometre | +28.3% |
| 2018 | 0.2458 one-year-olds per square kilometre | +13.9% |
| 2019 | 0.207 one-year-olds per square kilometre | -15.8% |
| 2020 | 0.2116 one-year-olds per square kilometre | +2.2% |
| 2021 | 0.3357 one-year-olds per square kilometre | +58.6% |
| 2022 | 0.3179 one-year-olds per square kilometre | -5.3% |
| 2023 | 0.424 one-year-olds per square kilometre | +33.4% |
Tanzania compared with similar countries
- Tanzania's 0.424 one-year-olds per square kilometre is above the median for lower middle income countries, which is 0.2635 one-year-olds per square kilometre, 1.6× the median. (46 countries reporting)
- Tanzania's 0.424 one-year-olds per square kilometre is above the median for Sub-Saharan Africa, which is 0.2848 one-year-olds per square kilometre, 1.5× the median. (48 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.3305 one-year-olds per square kilometre | 0.1568 one-year-olds per square kilometre | 0.4635 one-year-olds per square kilometre | 10 |
| 1990s | 0.2362 one-year-olds per square kilometre | 0.1886 one-year-olds per square kilometre | 0.3277 one-year-olds per square kilometre | 10 |
| 2000s | 0.1934 one-year-olds per square kilometre | 0.076 one-year-olds per square kilometre | 0.295 one-year-olds per square kilometre | 10 |
| 2010s | 0.1645 one-year-olds per square kilometre | 0.0594 one-year-olds per square kilometre | 0.2458 one-year-olds per square kilometre | 10 |
| 2020s | 0.3223 one-year-olds per square kilometre | 0.2116 one-year-olds per square kilometre | 0.424 one-year-olds per square kilometre | 4 |
Countries ranked near Tanzania
- 39 Tuvalu 0.438 one-year-olds per square kilometre compare
- 40 Netherlands 0.4319 one-year-olds per square kilometre compare
- 41 Dominica 0.4242 one-year-olds per square kilometre compare
- 43 Dominican Republic 0.4131 one-year-olds per square kilometre compare
- 44 Guatemala 0.4128 one-year-olds per square kilometre compare
- 45 Sudan 0.4084 one-year-olds per square kilometre compare
More health data for Tanzania
- Un projection of annual infant deaths, annual growth rate -1.03 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.7342 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 658.6 deaths per 1,000 people (2090)
- Number of infants who die before age 1 32,514 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 13 (2025)
- Population ages 00-04, female, annual growth rate 1.86 % change on previous year (2025)
- Population ages 00-04, female, per unit of GDP 0.0001 units per US$ of GDP (2025)
- Population ages 00-04, female, per capita 0.0786 units per person (2025)
- Population ages 00-04, male, annual growth rate 1.89 % change on previous year (2025)
- Population ages 00-04, male, per unit of GDP 0.0001 units per US$ of GDP (2025)
Frequently asked questions
- What is number of one-year-olds who are not vaccinated against diphtheria in Tanzania?
- Number of one-year-olds who are not vaccinated against diphtheria in Tanzania was 0.424 one-year-olds per square kilometre in 2023, according to Statizoid (derived).
- What is the highest number of one-year-olds who are not vaccinated against diphtheria recorded in Tanzania?
- The highest recorded value was 0.4635 one-year-olds per square kilometre in 1982.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Tanzania?
- The lowest recorded value was 0.0594 one-year-olds per square kilometre in 2014.
- How does Tanzania rank for number of one-year-olds who are not vaccinated against diphtheria?
- Tanzania ranks 42nd out of 192 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria rising or falling in Tanzania?
- Over the last ten years it is up 146.7%. The long-run trend across the full record is falling.
- Where does this Tanzania data come from?
- The figures come from Statizoid (derived), published as part of Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus, per square kilometre. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 44 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus ÷ Land area (sq. km)
Computed from
- Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data
- Land area FAOSTAT, Food and Agriculture Organization of the United Nations (FAO)
Statizoid computes this series; the underlying measurements belong to the publishers named above. The arithmetic is applied to every country and year where both inputs report, and nothing is estimated unless the page says so.
About this data
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.