Share of one-year-olds who are vaccinated against polio in Bulgaria
Bulgaria: Share of one-year-olds who are vaccinated against polio was 94.0% in 2024. ▼ Falling
Share of one-year-olds who are vaccinated against polio in Bulgaria, 1980–2024
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in %.
Analysis
The most recent figure for share of one-year-olds who are vaccinated against polio in Bulgaria is 94.0%, measured in 2024.
That represents a change of up 2.2% on the previous year and up 6.8% over ten years.
Over the whole period, share of one-year-olds who are vaccinated against polio in Bulgaria peaked at 99.0% in 1980 and was at its lowest, 81.0%, in 1991.
Bulgaria ranks 63rd of 194 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 45 years of available data.
Share of one-year-olds who are vaccinated against polio in Bulgaria, year by year
| Year | % | Change |
|---|---|---|
| 1980 | 99.0% | — |
| 1981 | 99.0% | +0.0% |
| 1982 | 99.0% | +0.0% |
| 1983 | 98.0% | -1.0% |
| 1984 | 99.0% | +1.0% |
| 1985 | 99.0% | +0.0% |
| 1986 | 99.0% | +0.0% |
| 1987 | 99.0% | +0.0% |
| 1988 | 99.0% | +0.0% |
| 1989 | 99.0% | +0.0% |
| 1990 | 99.0% | +0.0% |
| 1991 | 81.0% | -18.2% |
| 1992 | 99.0% | +22.2% |
| 1993 | 97.0% | -2.0% |
| 1994 | 94.0% | -3.1% |
| 1995 | 97.0% | +3.2% |
| 1996 | 95.0% | -2.1% |
| 1997 | 96.0% | +1.1% |
| 1998 | 96.0% | +0.0% |
| 1999 | 97.0% | +1.0% |
| 2000 | 94.0% | -3.1% |
| 2001 | 94.0% | +0.0% |
| 2002 | 94.0% | +0.0% |
| 2003 | 96.0% | +2.1% |
| 2004 | 94.0% | -2.1% |
| 2005 | 97.0% | +3.2% |
| 2006 | 96.0% | -1.0% |
| 2007 | 95.0% | -1.0% |
| 2008 | 96.0% | +1.1% |
| 2009 | 94.0% | -2.1% |
| 2010 | 94.0% | +0.0% |
| 2011 | 95.0% | +1.1% |
| 2012 | 95.0% | +0.0% |
| 2013 | 95.0% | +0.0% |
| 2014 | 88.0% | -7.4% |
| 2015 | 91.0% | +3.4% |
| 2016 | 92.0% | +1.1% |
| 2017 | 92.0% | +0.0% |
| 2018 | 92.0% | +0.0% |
| 2019 | 93.0% | +1.1% |
| 2020 | 91.0% | -2.2% |
| 2021 | 89.0% | -2.2% |
| 2022 | 91.0% | +2.2% |
| 2023 | 92.0% | +1.1% |
| 2024 | 94.0% | +2.2% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 98.9% | 98.0% | 99.0% | 10 |
| 1990s | 95.1% | 81.0% | 99.0% | 10 |
| 2000s | 95.0% | 94.0% | 97.0% | 10 |
| 2010s | 92.7% | 88.0% | 95.0% | 10 |
| 2020s | 91.4% | 89.0% | 94.0% | 5 |
Countries ranked near Bulgaria
- 63 Armenia 94.0% compare
- 63 Australia 94.0% compare
- 63 Barbados 94.0% compare
- 63 Cape Verde 94.0% compare
- 63 Cyprus 94.0% compare
- 63 Iceland 94.0% compare
- 63 Italy 94.0% compare
- 63 Jordan 94.0% compare
- 63 Seychelles 94.0% compare
- 63 Spain 94.0% compare
- 63 Tuvalu 94.0% compare
- 63 Uruguay 94.0% compare
More health data for Bulgaria
- Un projection of annual infant deaths, annual growth rate -2.5 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate -0.615 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,422 deaths per 1,000 people (2090)
- Number of infants who die before age 1 39 deaths (2100)
- Population ages 0-14, female, annual growth rate -0.6844 % change on previous year (2025)
- Population ages 0-14, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 0-14, female, per capita 0.07 units per person (2025)
- Population ages 0-14, male, annual growth rate -0.6014 % change on previous year (2025)
- Population ages 0-14, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 0-14, male, per capita 0.074 units per person (2025)
Frequently asked questions
- What is share of one-year-olds who are vaccinated against polio in Bulgaria?
- Share of one-year-olds who are vaccinated against polio in Bulgaria was 94.0% in 2024, according to WHO & UNICEF (2025); 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 Bulgaria?
- The highest recorded value was 99.0% in 1980.
- What is the lowest share of one-year-olds who are vaccinated against polio recorded in Bulgaria?
- The lowest recorded value was 81.0% in 1991.
- How does Bulgaria rank for share of one-year-olds who are vaccinated against polio?
- Bulgaria ranks 63rd out of 194 countries with data for 2024.
- Is share of one-year-olds who are vaccinated against polio rising or falling in Bulgaria?
- Over the last ten years it is up 6.8%. The long-run trend across the full record is falling.
- Where does this Bulgaria data come from?
- The figures come from WHO & UNICEF (2025); 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.