Number of one-year-olds who are not fully vaccinated against in Comoros
Comoros: Number of one-year-olds who are not fully vaccinated against was 5,767 one-year-olds in 2023. ▼ Falling
Number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus in Comoros, 1984–2023
Source: WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in one-year-olds.
Analysis
Comoros recorded 5,767 one-year-olds for number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus in 2023.
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 fully vaccinated against diphtheria, pertussis and tetanus in Comoros peaked at 10,884 one-year-olds in 1992 and was at its lowest, 1,025 one-year-olds, in 1990.
Comoros ranks 106th of 195 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 40 years of available data.
Number of one-year-olds who are not fully vaccinated against in Comoros, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 1984 | 10,254 one-year-olds | — |
| 1985 | 7,497 one-year-olds | -26.9% |
| 1986 | 4,560 one-year-olds | -39.2% |
| 1987 | 4,674 one-year-olds | +2.5% |
| 1988 | 9,394 one-year-olds | +101.0% |
| 1989 | 3,024 one-year-olds | -67.8% |
| 1990 | 1,025 one-year-olds | -66.1% |
| 1991 | 8,312 one-year-olds | +711.0% |
| 1992 | 10,884 one-year-olds | +30.9% |
| 1993 | 5,345 one-year-olds | -50.9% |
| 1994 | 7,496 one-year-olds | +40.3% |
| 1995 | 4,415 one-year-olds | -41.1% |
| 1996 | 7,014 one-year-olds | +58.9% |
| 1997 | 9,105 one-year-olds | +29.8% |
| 1998 | 4,368 one-year-olds | -52.0% |
| 1999 | 4,734 one-year-olds | +8.4% |
| 2000 | 5,372 one-year-olds | +13.5% |
| 2001 | 5,532 one-year-olds | +3.0% |
| 2002 | 2,071 one-year-olds | -62.6% |
| 2003 | 3,774 one-year-olds | +82.2% |
| 2004 | 4,437 one-year-olds | +17.6% |
| 2005 | 5,851 one-year-olds | +31.9% |
| 2006 | 5,768 one-year-olds | -1.4% |
| 2007 | 4,750 one-year-olds | -17.6% |
| 2008 | 3,672 one-year-olds | -22.7% |
| 2009 | 3,347 one-year-olds | -8.9% |
| 2010 | 5,239 one-year-olds | +56.5% |
| 2011 | 3,517 one-year-olds | -32.9% |
| 2012 | 2,970 one-year-olds | -15.5% |
| 2013 | 3,656 one-year-olds | +23.1% |
| 2014 | 4,333 one-year-olds | +18.5% |
| 2015 | 4,365 one-year-olds | +0.7% |
| 2016 | 5,474 one-year-olds | +25.4% |
| 2017 | 4,628 one-year-olds | -15.5% |
| 2018 | 5,122 one-year-olds | +10.7% |
| 2019 | 4,946 one-year-olds | -3.4% |
| 2020 | 5,888 one-year-olds | +19.0% |
| 2021 | 6,389 one-year-olds | +8.5% |
| 2022 | 5,050 one-year-olds | -21.0% |
| 2023 | 5,767 one-year-olds | +14.2% |
Comoros compared with similar countries
- Comoros's 5,767 one-year-olds is below the median for lower middle income countries, which is 40,226 one-year-olds, 14% of the median. (47 countries reporting)
- Comoros's 5,767 one-year-olds is below the median for Sub-Saharan Africa, which is 52,290 one-year-olds, 11% of the median. (48 countries reporting)
Biggest year-on-year movements
Years where Number of one-year-olds who are not fully vaccinated against 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% | 1,025 one-year-olds | 8,312 one-year-olds |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 6,567 one-year-olds | 3,024 one-year-olds | 10,254 one-year-olds | 6 |
| 1990s | 6,270 one-year-olds | 1,025 one-year-olds | 10,884 one-year-olds | 10 |
| 2000s | 4,458 one-year-olds | 2,071 one-year-olds | 5,851 one-year-olds | 10 |
| 2010s | 4,425 one-year-olds | 2,970 one-year-olds | 5,474 one-year-olds | 10 |
| 2020s | 5,774 one-year-olds | 5,050 one-year-olds | 6,389 one-year-olds | 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)
- 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)
- Population ages 00-04, male, per capita 0.0664 units per person (2025)
Frequently asked questions
- What is number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus in Comoros?
- Number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus in Comoros was 5,767 one-year-olds in 2023, according to WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus recorded in Comoros?
- The highest recorded value was 10,884 one-year-olds in 1992.
- What is the lowest number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus recorded in Comoros?
- The lowest recorded value was 1,025 one-year-olds in 1990.
- How does Comoros rank for number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus?
- Comoros ranks 106th out of 195 countries with data for 2023.
- Is number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus 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 WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data, published as part of Number of one-year-olds who are not fully 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.