Share of one-year-olds vaccinated against diphtheria, tetanus in Comoros
Comoros: Share of one-year-olds vaccinated against diphtheria, tetanus was 75.0% in 2025. ▲ Rising
Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Comoros, 1984–2025
Source: WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in %.
Analysis
In 2025, share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Comoros stood at 75.0%.
Compared with earlier readings it is down 6.2% over ten years.
Over the whole period, share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Comoros peaked at 94.0% in 1990 and was at its lowest, 31.0%, in 1984.
That places Comoros 161st out of 195 countries with data for 2025, putting it in the bottom quarter.
The long-run direction has been consistently rising across the 42 years of available data.
Share of one-year-olds vaccinated against diphtheria, tetanus in Comoros, year by year
| Year | % | Change |
|---|---|---|
| 1984 | 31.0% | — |
| 1985 | 51.0% | +64.5% |
| 1986 | 71.0% | +39.2% |
| 1987 | 71.0% | +0.0% |
| 1988 | 43.0% | -39.4% |
| 1989 | 82.0% | +90.7% |
| 1990 | 94.0% | +14.6% |
| 1991 | 52.0% | -44.7% |
| 1992 | 38.0% | -26.9% |
| 1993 | 70.0% | +84.2% |
| 1994 | 58.0% | -17.1% |
| 1995 | 75.0% | +29.3% |
| 1996 | 60.0% | -20.0% |
| 1997 | 48.0% | -20.0% |
| 1998 | 75.0% | +56.2% |
| 1999 | 73.0% | -2.7% |
| 2000 | 70.0% | -4.1% |
| 2001 | 70.0% | +0.0% |
| 2002 | 89.0% | +27.1% |
| 2003 | 80.0% | -10.1% |
| 2004 | 76.0% | -5.0% |
| 2005 | 68.0% | -10.5% |
| 2006 | 69.0% | +1.5% |
| 2007 | 75.0% | +8.7% |
| 2008 | 81.0% | +8.0% |
| 2009 | 83.0% | +2.5% |
| 2010 | 74.0% | -10.8% |
| 2011 | 83.0% | +12.2% |
| 2012 | 86.0% | +3.6% |
| 2013 | 83.0% | -3.5% |
| 2014 | 80.0% | -3.6% |
| 2015 | 80.0% | +0.0% |
| 2016 | 75.0% | -6.2% |
| 2017 | 79.0% | +5.3% |
| 2018 | 77.0% | -2.5% |
| 2019 | 78.0% | +1.3% |
| 2020 | 74.0% | -5.1% |
| 2021 | 72.0% | -2.7% |
| 2022 | 78.0% | +8.3% |
| 2023 | 75.0% | -3.8% |
| 2024 | 75.0% | +0.0% |
| 2025 | 75.0% | +0.0% |
Comoros compared with similar countries
- Comoros's 75.0% is below the median for lower middle income countries, which is 86.0%, 87% of the median. (47 countries reporting)
- Comoros's 75.0% is below the median for Sub-Saharan Africa, which is 84.0%, 89% of the median. (48 countries reporting)
Biggest year-on-year movements
Years where Share of one-year-olds vaccinated against diphtheria, tetanus 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 |
|---|---|---|---|
| 1989 | +90.7% | 43.0% | 82.0% |
| 1993 | +84.2% | 38.0% | 70.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 58.2% | 31.0% | 82.0% | 6 |
| 1990s | 64.3% | 38.0% | 94.0% | 10 |
| 2000s | 76.1% | 68.0% | 89.0% | 10 |
| 2010s | 79.5% | 74.0% | 86.0% | 10 |
| 2020s | 74.8% | 72.0% | 78.0% | 6 |
Countries ranked near Comoros
- 158 Ecuador 77.0% compare
- 158 Guatemala 77.0% compare
- 158 Vanuatu 77.0% compare
- 161 Argentina 75.0% compare
- 161 Montenegro 75.0% compare
- 164 Micronesia (country) 73.0% compare
- 164 South Sudan 73.0% compare
More reference data data for Comoros
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.002 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.0385 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 0.0444 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.0039 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 0.0444 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 0.0068 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.0026 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 0.1837 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 0.2155 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 0.0211 (2050)
Frequently asked questions
- What is share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Comoros?
- Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis in Comoros was 75.0% in 2025, according to WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest share of one-year-olds vaccinated against diphtheria, tetanus and pertussis recorded in Comoros?
- The highest recorded value was 94.0% in 1990.
- What is the lowest share of one-year-olds vaccinated against diphtheria, tetanus and pertussis recorded in Comoros?
- The lowest recorded value was 31.0% in 1984.
- How does Comoros rank for share of one-year-olds vaccinated against diphtheria, tetanus and pertussis?
- Comoros ranks 161st out of 195 countries with data for 2025.
- Is share of one-year-olds vaccinated against diphtheria, tetanus and pertussis rising or falling in Comoros?
- Over the last ten years it is down 6.2%. The long-run trend across the full record is rising.
- 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 Share of one-year-olds vaccinated against diphtheria, tetanus and pertussis. Statizoid updates them automatically from the source API.
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About this data
Share of one-year-olds who have had three doses of the combined diphtheria, tetanus and pertussis vaccine in a given year.