Share of one-year-olds who are vaccinated against polio in Comoros
Comoros: Share of one-year-olds who are vaccinated against polio was 62.0% in 2024. ▲ Rising
Share of one-year-olds who are vaccinated against polio in Comoros, 1984–2024
Source: WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in %.
Analysis
In 2024, share of one-year-olds who are vaccinated against polio in Comoros stood at 62.0%.
That represents a change of down 21.5% over ten years.
Over the whole period, share of one-year-olds who are vaccinated against polio in Comoros peaked at 98.0% in 2002 and was at its lowest, 32.0%, in 1984.
That places Comoros 179th out of 194 countries with data for 2024, putting it in the bottom quarter.
The long-run direction has been consistently rising across the 41 years of available data.
Share of one-year-olds who are vaccinated against polio in Comoros, year by year
| Year | % | Change |
|---|---|---|
| 1984 | 32.0% | — |
| 1985 | 53.0% | +65.6% |
| 1986 | 73.0% | +37.7% |
| 1987 | 73.0% | +0.0% |
| 1988 | 44.0% | -39.7% |
| 1989 | 78.0% | +77.3% |
| 1990 | 94.0% | +20.5% |
| 1991 | 55.0% | -41.5% |
| 1992 | 46.0% | -16.4% |
| 1993 | 70.0% | +52.2% |
| 1994 | 58.0% | -17.1% |
| 1995 | 78.0% | +34.5% |
| 1996 | 60.0% | -23.1% |
| 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 | 98.0% | +40.0% |
| 2003 | 80.0% | -18.4% |
| 2004 | 73.0% | -8.8% |
| 2005 | 67.0% | -8.2% |
| 2006 | 69.0% | +3.0% |
| 2007 | 75.0% | +8.7% |
| 2008 | 81.0% | +8.0% |
| 2009 | 84.0% | +3.7% |
| 2010 | 82.0% | -2.4% |
| 2011 | 85.0% | +3.7% |
| 2012 | 85.0% | +0.0% |
| 2013 | 82.0% | -3.5% |
| 2014 | 79.0% | -3.7% |
| 2015 | 81.0% | +2.5% |
| 2016 | 75.0% | -7.4% |
| 2017 | 79.0% | +5.3% |
| 2018 | 77.0% | -2.5% |
| 2019 | 71.0% | -7.8% |
| 2020 | 64.0% | -9.9% |
| 2021 | 72.0% | +12.5% |
| 2022 | 72.0% | +0.0% |
| 2023 | 62.0% | -13.9% |
| 2024 | 62.0% | +0.0% |
Comoros compared with similar countries
- Comoros's 62.0% is below the median for lower middle income countries, which is 84.5%, 73% of the median. (46 countries reporting)
- Comoros's 62.0% is below the median for Sub-Saharan Africa, which is 77.0%, 81% of the median. (48 countries reporting)
Biggest year-on-year movements
Years where Share of one-year-olds who are vaccinated against polio 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 | +77.3% | 44.0% | 78.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 58.8% | 32.0% | 78.0% | 6 |
| 1990s | 65.7% | 46.0% | 94.0% | 10 |
| 2000s | 76.7% | 67.0% | 98.0% | 10 |
| 2010s | 79.6% | 71.0% | 85.0% | 10 |
| 2020s | 66.4% | 62.0% | 72.0% | 5 |
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 share of one-year-olds who are vaccinated against polio in Comoros?
- Share of one-year-olds who are vaccinated against polio in Comoros was 62.0% in 2024, 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 who are vaccinated against polio recorded in Comoros?
- The highest recorded value was 98.0% in 2002.
- What is the lowest share of one-year-olds who are vaccinated against polio recorded in Comoros?
- The lowest recorded value was 32.0% in 1984.
- How does Comoros rank for share of one-year-olds who are vaccinated against polio?
- Comoros ranks 179th out of 194 countries with data for 2024.
- Is share of one-year-olds who are vaccinated against polio rising or falling in Comoros?
- Over the last ten years it is down 21.5%. 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 who are vaccinated against polio. Statizoid updates them automatically from the source API.
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About this data
Share of one-year-olds who have had the third dose of either the oral or inactivated polio vaccine in a given year.