Immunization, Pol3 (% of one-year-old children) in Least developed countries
Least developed countries: Immunization, Pol3 (% of one-year-old children) was 73.7% in 2024. ▲ Rising
Immunization, Pol3 in Least developed countries, 1980–2024
Source: WHO and UNICEF (http://www.who.int/immunization/monitoring_surveillance/en/). Measured in % of one-year-old children.
Analysis
In 2024, immunization, pol3 in Least developed countries stood at 73.7%.
That represents a change of down 0.8% on the previous year and down 5.3% over ten years.
Over the whole period, immunization, pol3 in Least developed countries peaked at 78.8% in 2015 and was at its lowest, 5.4%, in 1980.
Least developed countries ranks 36th of 43 groups on this measure, in the bottom quarter.
The long-run direction has been consistently rising across the 45 years of available data.
Immunization, Pol3 (% of one-year-old children) in Least developed countries, year by year
| Year | % of one-year-old children | Change |
|---|---|---|
| 1980 | 5.4% | — |
| 1981 | 8.1% | +48.9% |
| 1982 | 9.8% | +21.2% |
| 1983 | 11.2% | +14.1% |
| 1984 | 12.4% | +11.0% |
| 1985 | 17.1% | +37.5% |
| 1986 | 22.0% | +28.7% |
| 1987 | 28.3% | +28.8% |
| 1988 | 33.3% | +17.4% |
| 1989 | 44.9% | +34.9% |
| 1990 | 56.1% | +24.8% |
| 1991 | 50.0% | -10.8% |
| 1992 | 49.1% | -1.9% |
| 1993 | 51.6% | +5.2% |
| 1994 | 54.9% | +6.4% |
| 1995 | 55.1% | +0.3% |
| 1996 | 57.8% | +4.9% |
| 1997 | 59.2% | +2.3% |
| 1998 | 57.8% | -2.3% |
| 1999 | 58.1% | +0.6% |
| 2000 | 58.8% | +1.2% |
| 2001 | 60.1% | +2.3% |
| 2002 | 62.9% | +4.6% |
| 2003 | 66.9% | +6.4% |
| 2004 | 69.0% | +3.2% |
| 2005 | 72.0% | +4.3% |
| 2006 | 72.9% | +1.3% |
| 2007 | 74.8% | +2.6% |
| 2008 | 75.9% | +1.5% |
| 2009 | 77.3% | +1.9% |
| 2010 | 77.4% | +0.1% |
| 2011 | 76.6% | -1.0% |
| 2012 | 77.1% | +0.6% |
| 2013 | 75.9% | -1.5% |
| 2014 | 77.8% | +2.4% |
| 2015 | 78.8% | +1.3% |
| 2016 | 77.3% | -1.9% |
| 2017 | 77.8% | +0.7% |
| 2018 | 77.4% | -0.6% |
| 2019 | 78.3% | +1.2% |
| 2020 | 74.4% | -5.0% |
| 2021 | 71.5% | -3.9% |
| 2022 | 74.2% | +3.8% |
| 2023 | 74.3% | +0.0% |
| 2024 | 73.7% | -0.8% |
Biggest year-on-year movements
Years where Immunization, Pol3 (% of one-year-old children) in Least developed countries 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 |
|---|---|---|---|
| 1981 | +48.9% | 5.4% | 8.1% |
| 1985 | +37.5% | 12.4% | 17.1% |
| 1989 | +34.9% | 33.3% | 44.9% |
| 1986 | +28.7% | 17.1% | 22.0% |
| 1987 | +28.8% | 22.0% | 28.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 19.3% | 5.4% | 44.9% | 10 |
| 1990s | 55.0% | 49.1% | 59.2% | 10 |
| 2000s | 69.1% | 58.8% | 77.3% | 10 |
| 2010s | 77.4% | 75.9% | 78.8% | 10 |
| 2020s | 73.6% | 71.5% | 74.4% | 5 |
More health data for Least developed countries
- Population ages 30-34, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 40-44, female, annual growth rate 3.94 % change on previous year (2025)
- Population ages 35-39, male, per capita 0.0286 units per person (2025)
- Population ages 35-39, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 35-39, male, annual growth rate 2.37 % change on previous year (2025)
- Population ages 35-39, female, per capita 0.03 units per person (2025)
- Population ages 35-39, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 35-39, female, annual growth rate 2.32 % change on previous year (2025)
- Population ages 30-34, male, per capita 0.0339 units per person (2025)
- Population ages 25-29, male, per unit of GDP 0 units per US$ of GDP (2025)
Frequently asked questions
- What is immunization, pol3 in Least developed countries?
- Immunization, pol3 in Least developed countries was 73.7% in 2024, according to WHO and UNICEF (http://www.who.int/immunization/monitoring_surveillance/en/).
- What is the highest immunization, pol3 recorded in Least developed countries?
- The highest recorded value was 78.8% in 2015.
- What is the lowest immunization, pol3 recorded in Least developed countries?
- The lowest recorded value was 5.4% in 1980.
- How does Least developed countries rank for immunization, pol3?
- Least developed countries ranks 36th out of 43 groups with data for 2024.
- Is immunization, pol3 rising or falling in Least developed countries?
- Over the last ten years it is down 5.3%. The long-run trend across the full record is rising.
- Where does this Least developed countries data come from?
- The figures come from WHO and UNICEF (http://www.who.int/immunization/monitoring_surveillance/en/), published as part of Immunization, Pol3 (% of one-year-old children). Statizoid updates them automatically from the source API.
Download this data
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About this data
Child immunization rate, polio, is the percentage of children ages 12-23 months who received polio vaccinations before 12 months or at any time before the survey. A child is considered adequately immunized after three doses.