Number of one-year-olds who are not vaccinated against diphtheria in Yemen
Yemen: Number of one-year-olds who are not vaccinated against diphtheria was 1.32 one-year-olds per square kilometre in 2023. ▲ Rising
Number of one-year-olds who are not vaccinated against diphtheria in Yemen, 1980–2023
Source: Statizoid (derived). Measured in one-year-olds per square kilometre.
Analysis
In 2023, number of one-year-olds who are not vaccinated against diphtheria in Yemen stood at 1.32 one-year-olds per square kilometre. That is the highest value across all 44 years on record.
That represents a change of up 31.6% on the previous year and up 156.9% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Yemen peaked at 1.32 one-year-olds per square kilometre in 2023 and was at its lowest, 0.1847 one-year-olds per square kilometre, in 1990.
Yemen ranks 9th of 192 countries on this measure, in the top 10%.
The long-run direction has been consistently rising across the 44 years of available data.
Number of one-year-olds who are not vaccinated against diphtheria in Yemen, year by year
| Year | one-year-olds per square kilometre | Change |
|---|---|---|
| 1980 | 0.7736 one-year-olds per square kilometre | — |
| 1981 | 0.7966 one-year-olds per square kilometre | +3.0% |
| 1982 | 0.8222 one-year-olds per square kilometre | +3.2% |
| 1983 | 0.8474 one-year-olds per square kilometre | +3.1% |
| 1984 | 0.8646 one-year-olds per square kilometre | +2.0% |
| 1985 | 0.8513 one-year-olds per square kilometre | -1.5% |
| 1986 | 0.875 one-year-olds per square kilometre | +2.8% |
| 1987 | 0.8565 one-year-olds per square kilometre | -2.1% |
| 1988 | 0.6917 one-year-olds per square kilometre | -19.2% |
| 1989 | 0.4919 one-year-olds per square kilometre | -28.9% |
| 1990 | 0.1847 one-year-olds per square kilometre | -62.5% |
| 1991 | 0.6307 one-year-olds per square kilometre | +241.5% |
| 1992 | 0.6131 one-year-olds per square kilometre | -2.8% |
| 1993 | 0.5795 one-year-olds per square kilometre | -5.5% |
| 1994 | 0.8644 one-year-olds per square kilometre | +49.1% |
| 1995 | 0.7353 one-year-olds per square kilometre | -14.9% |
| 1996 | 0.703 one-year-olds per square kilometre | -4.4% |
| 1997 | 0.7886 one-year-olds per square kilometre | +12.2% |
| 1998 | 0.4199 one-year-olds per square kilometre | -46.8% |
| 1999 | 0.3878 one-year-olds per square kilometre | -7.6% |
| 2000 | 0.3549 one-year-olds per square kilometre | -8.5% |
| 2001 | 0.3766 one-year-olds per square kilometre | +6.1% |
| 2002 | 0.4968 one-year-olds per square kilometre | +31.9% |
| 2003 | 0.5632 one-year-olds per square kilometre | +13.4% |
| 2004 | 0.4137 one-year-olds per square kilometre | -26.5% |
| 2005 | 0.318 one-year-olds per square kilometre | -23.1% |
| 2006 | 0.3404 one-year-olds per square kilometre | +7.1% |
| 2007 | 0.3333 one-year-olds per square kilometre | -2.1% |
| 2008 | 0.3576 one-year-olds per square kilometre | +7.3% |
| 2009 | 0.3973 one-year-olds per square kilometre | +11.1% |
| 2010 | 0.4058 one-year-olds per square kilometre | +2.1% |
| 2011 | 0.5322 one-year-olds per square kilometre | +31.2% |
| 2012 | 0.5703 one-year-olds per square kilometre | +7.1% |
| 2013 | 0.5143 one-year-olds per square kilometre | -9.8% |
| 2014 | 0.5552 one-year-olds per square kilometre | +8.0% |
| 2015 | 0.7123 one-year-olds per square kilometre | +28.3% |
| 2016 | 0.7394 one-year-olds per square kilometre | +3.8% |
| 2017 | 0.8485 one-year-olds per square kilometre | +14.8% |
| 2018 | 0.9835 one-year-olds per square kilometre | +15.9% |
| 2019 | 0.8817 one-year-olds per square kilometre | -10.4% |
| 2020 | 0.9752 one-year-olds per square kilometre | +10.6% |
| 2021 | 1.03 one-year-olds per square kilometre | +5.2% |
| 2022 | 1 one-year-olds per square kilometre | -2.1% |
| 2023 | 1.32 one-year-olds per square kilometre | +31.6% |
Yemen compared with similar countries
- Yemen's 1.32 one-year-olds per square kilometre is above the median for low income countries, which is 0.4431 one-year-olds per square kilometre, 3.0× the median. (25 countries reporting)
- Yemen's 1.32 one-year-olds per square kilometre is above the median for Middle East, North Africa, Afghanistan & Pakistan, which is 0.1307 one-year-olds per square kilometre, 10.1× the median. (23 countries reporting)
Biggest year-on-year movements
Years where Number of one-year-olds who are not vaccinated against diphtheria in Yemen changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1991 | +241.5% | 0.1847 one-year-olds per square kilometre | 0.6307 one-year-olds per square kilometre |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.7871 one-year-olds per square kilometre | 0.4919 one-year-olds per square kilometre | 0.875 one-year-olds per square kilometre | 10 |
| 1990s | 0.5907 one-year-olds per square kilometre | 0.1847 one-year-olds per square kilometre | 0.8644 one-year-olds per square kilometre | 10 |
| 2000s | 0.3952 one-year-olds per square kilometre | 0.318 one-year-olds per square kilometre | 0.5632 one-year-olds per square kilometre | 10 |
| 2010s | 0.6743 one-year-olds per square kilometre | 0.4058 one-year-olds per square kilometre | 0.9835 one-year-olds per square kilometre | 10 |
| 2020s | 1.08 one-year-olds per square kilometre | 0.9752 one-year-olds per square kilometre | 1.32 one-year-olds per square kilometre | 4 |
Countries ranked near Yemen
- 6 Burundi 1.88 one-year-olds per square kilometre compare
- 7 Monaco 1.68 one-year-olds per square kilometre compare
- 8 Vietnam 1.58 one-year-olds per square kilometre compare
- 10 Singapore 1.26 one-year-olds per square kilometre compare
- 11 Gambia 1.23 one-year-olds per square kilometre compare
- 12 Benin 1.22 one-year-olds per square kilometre compare
More health data for Yemen
- Un projection of annual infant deaths, annual growth rate -1.94 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 1.04 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 809.4 deaths per 1,000 people (2090)
- Number of infants who die before age 1 9,603 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 103 (2025)
- Population ages 00-04, female, annual growth rate 1.88 % change on previous year (2025)
- Population ages 00-04, female, per unit of GDP 0.0001 units per US$ of GDP (2018)
- Population ages 00-04, female, per capita 0.0766 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 (2018)
Frequently asked questions
- What is number of one-year-olds who are not vaccinated against diphtheria in Yemen?
- Number of one-year-olds who are not vaccinated against diphtheria in Yemen was 1.32 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 Yemen?
- The highest recorded value was 1.32 one-year-olds per square kilometre in 2023.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Yemen?
- The lowest recorded value was 0.1847 one-year-olds per square kilometre in 1990.
- How does Yemen rank for number of one-year-olds who are not vaccinated against diphtheria?
- Yemen ranks 9th out of 192 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria rising or falling in Yemen?
- Over the last ten years it is up 156.9%. The long-run trend across the full record is rising.
- Where does this Yemen 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.