Number of one-year-olds who are not vaccinated against diphtheria in Comoros
Comoros: Number of one-year-olds who are not vaccinated against diphtheria was 3.1 one-year-olds per square kilometre in 2023. ▼ Falling
Number of one-year-olds who are not vaccinated against diphtheria in Comoros, 1984–2023
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 Comoros stood at 3.1 one-year-olds per square kilometre.
That represents a change of up 14.2% on the previous year and up 57.7% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Comoros peaked at 5.85 one-year-olds per square kilometre in 1992 and was at its lowest, 0.5507 one-year-olds per square kilometre, in 1990.
That places Comoros 3rd out of 192 countries with data for 2023, putting it in the top 10%.
The long-run direction has been consistently falling across the 40 years of available data.
Number of one-year-olds who are not vaccinated against diphtheria in Comoros, year by year
| Year | one-year-olds per square kilometre | Change |
|---|---|---|
| 1984 | 5.51 one-year-olds per square kilometre | — |
| 1985 | 4.03 one-year-olds per square kilometre | -26.9% |
| 1986 | 2.45 one-year-olds per square kilometre | -39.2% |
| 1987 | 2.51 one-year-olds per square kilometre | +2.5% |
| 1988 | 5.05 one-year-olds per square kilometre | +101.0% |
| 1989 | 1.62 one-year-olds per square kilometre | -67.8% |
| 1990 | 0.5507 one-year-olds per square kilometre | -66.1% |
| 1991 | 4.47 one-year-olds per square kilometre | +711.0% |
| 1992 | 5.85 one-year-olds per square kilometre | +30.9% |
| 1993 | 2.87 one-year-olds per square kilometre | -50.9% |
| 1994 | 4.03 one-year-olds per square kilometre | +40.3% |
| 1995 | 2.37 one-year-olds per square kilometre | -41.1% |
| 1996 | 3.77 one-year-olds per square kilometre | +58.9% |
| 1997 | 4.89 one-year-olds per square kilometre | +29.8% |
| 1998 | 2.35 one-year-olds per square kilometre | -52.0% |
| 1999 | 2.54 one-year-olds per square kilometre | +8.4% |
| 2000 | 2.89 one-year-olds per square kilometre | +13.5% |
| 2001 | 2.97 one-year-olds per square kilometre | +3.0% |
| 2002 | 1.11 one-year-olds per square kilometre | -62.6% |
| 2003 | 2.03 one-year-olds per square kilometre | +82.2% |
| 2004 | 2.38 one-year-olds per square kilometre | +17.6% |
| 2005 | 3.14 one-year-olds per square kilometre | +31.9% |
| 2006 | 3.1 one-year-olds per square kilometre | -1.4% |
| 2007 | 2.55 one-year-olds per square kilometre | -17.6% |
| 2008 | 1.97 one-year-olds per square kilometre | -22.7% |
| 2009 | 1.8 one-year-olds per square kilometre | -8.9% |
| 2010 | 2.82 one-year-olds per square kilometre | +56.5% |
| 2011 | 1.89 one-year-olds per square kilometre | -32.9% |
| 2012 | 1.6 one-year-olds per square kilometre | -15.5% |
| 2013 | 1.96 one-year-olds per square kilometre | +23.1% |
| 2014 | 2.33 one-year-olds per square kilometre | +18.5% |
| 2015 | 2.35 one-year-olds per square kilometre | +0.7% |
| 2016 | 2.94 one-year-olds per square kilometre | +25.4% |
| 2017 | 2.49 one-year-olds per square kilometre | -15.5% |
| 2018 | 2.75 one-year-olds per square kilometre | +10.7% |
| 2019 | 2.66 one-year-olds per square kilometre | -3.4% |
| 2020 | 3.16 one-year-olds per square kilometre | +19.0% |
| 2021 | 3.43 one-year-olds per square kilometre | +8.5% |
| 2022 | 2.71 one-year-olds per square kilometre | -21.0% |
| 2023 | 3.1 one-year-olds per square kilometre | +14.2% |
Comoros compared with similar countries
- Comoros's 3.1 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, 11.8× the median. (46 countries reporting)
- Comoros's 3.1 one-year-olds per square kilometre is above the median for Sub-Saharan Africa, which is 0.2848 one-year-olds per square kilometre, 10.9× the median. (48 countries reporting)
Biggest year-on-year movements
Years where Number of one-year-olds who are not vaccinated against diphtheria in Comoros 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 | +711.0% | 0.5507 one-year-olds per square kilometre | 4.47 one-year-olds per square kilometre |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 3.53 one-year-olds per square kilometre | 1.62 one-year-olds per square kilometre | 5.51 one-year-olds per square kilometre | 6 |
| 1990s | 3.37 one-year-olds per square kilometre | 0.5507 one-year-olds per square kilometre | 5.85 one-year-olds per square kilometre | 10 |
| 2000s | 2.4 one-year-olds per square kilometre | 1.11 one-year-olds per square kilometre | 3.14 one-year-olds per square kilometre | 10 |
| 2010s | 2.38 one-year-olds per square kilometre | 1.6 one-year-olds per square kilometre | 2.94 one-year-olds per square kilometre | 10 |
| 2020s | 3.1 one-year-olds per square kilometre | 2.71 one-year-olds per square kilometre | 3.43 one-year-olds per square kilometre | 4 |
Countries ranked near Comoros
More health data for Comoros
- Un projection of annual infant deaths, annual growth rate -2.16 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.8656 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 827.3 deaths per 1,000 people (2090)
- Number of infants who die before age 1 136 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 2 (2025)
- Population ages 00-04, female, annual growth rate 0.6648 % change on previous year (2025)
- Population ages 00-04, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 00-04, female, per capita 0.0647 units per person (2025)
- Population ages 00-04, male, annual growth rate 0.6855 % change on previous year (2025)
- Population ages 00-04, male, per unit of GDP 0 units per US$ of GDP (2025)
Frequently asked questions
- What is number of one-year-olds who are not vaccinated against diphtheria in Comoros?
- Number of one-year-olds who are not vaccinated against diphtheria in Comoros was 3.1 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 Comoros?
- The highest recorded value was 5.85 one-year-olds per square kilometre in 1992.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Comoros?
- The lowest recorded value was 0.5507 one-year-olds per square kilometre in 1990.
- How does Comoros rank for number of one-year-olds who are not vaccinated against diphtheria?
- Comoros ranks 3rd out of 192 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria rising or falling in Comoros?
- Over the last ten years it is up 57.7%. The long-run trend across the full record is falling.
- Where does this Comoros 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 — 40 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.