Number of one-year-olds who are not vaccinated against polio in Grenada
Grenada: Number of one-year-olds who are not vaccinated against polio was 193.62 one-year-olds in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against polio in Grenada, 1980–2023
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in one-year-olds.
Analysis
The most recent figure for number of one-year-olds who are not vaccinated against polio in Grenada is 193.62 one-year-olds, measured in 2023.
That represents a change of down 49.0% on the previous year and up 450.1% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against polio in Grenada peaked at 1,601 one-year-olds in 1980 and was at its lowest, 16.78 one-year-olds, in 2015.
Grenada ranks 173rd of 194 countries on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Number of one-year-olds who are not vaccinated against polio in Grenada, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 1980 | 1,601 one-year-olds | — |
| 1981 | 1,328 one-year-olds | -17.1% |
| 1982 | 849.81 one-year-olds | -36.0% |
| 1983 | 612.64 one-year-olds | -27.9% |
| 1984 | 551 one-year-olds | -10.1% |
| 1985 | 510.6 one-year-olds | -7.3% |
| 1986 | 179.76 one-year-olds | -64.8% |
| 1987 | 433.39 one-year-olds | +141.1% |
| 1988 | 833.76 one-year-olds | +92.4% |
| 1989 | 327.88 one-year-olds | -60.7% |
| 1990 | 730.36 one-year-olds | +122.8% |
| 1991 | 422.82 one-year-olds | -42.1% |
| 1992 | 231.8 one-year-olds | -45.2% |
| 1993 | 204.3 one-year-olds | -11.9% |
| 1994 | 110.85 one-year-olds | -45.7% |
| 1995 | 498.87 one-year-olds | +350.0% |
| 1996 | 426 one-year-olds | -14.6% |
| 1997 | 105.15 one-year-olds | -75.3% |
| 1998 | 104.5 one-year-olds | -0.6% |
| 1999 | 271.18 one-year-olds | +159.5% |
| 2000 | 62.76 one-year-olds | -76.9% |
| 2001 | 83.68 one-year-olds | +33.3% |
| 2002 | 38.88 one-year-olds | -53.5% |
| 2003 | 36.1 one-year-olds | -7.2% |
| 2004 | 289.12 one-year-olds | +700.9% |
| 2005 | 18.05 one-year-olds | -93.8% |
| 2006 | 162.36 one-year-olds | +799.5% |
| 2007 | 72.12 one-year-olds | -55.6% |
| 2008 | 17.98 one-year-olds | -75.1% |
| 2009 | 17.91 one-year-olds | -0.4% |
| 2010 | 106.86 one-year-olds | +496.6% |
| 2011 | 88.65 one-year-olds | -17.0% |
| 2012 | 35.38 one-year-olds | -60.1% |
| 2013 | 35.2 one-year-olds | -0.5% |
| 2014 | 330.22 one-year-olds | +838.1% |
| 2015 | 16.78 one-year-olds | -94.9% |
| 2016 | 31.98 one-year-olds | +90.6% |
| 2017 | 136.98 one-year-olds | +328.3% |
| 2018 | 56.04 one-year-olds | -59.1% |
| 2019 | 82.02 one-year-olds | +46.4% |
| 2020 | 397.04 one-year-olds | +384.1% |
| 2021 | 326.37 one-year-olds | -17.8% |
| 2022 | 379.35 one-year-olds | +16.2% |
| 2023 | 193.62 one-year-olds | -49.0% |
Grenada compared with similar countries
- Grenada's 193.62 one-year-olds is below the median for upper middle income countries, which is 4,188 one-year-olds, 5% of the median. (58 countries reporting)
- Grenada's 193.62 one-year-olds is below the median for Latin America & Caribbean, which is 3,472 one-year-olds, 6% of the median. (32 countries reporting)
Biggest year-on-year movements
Years where Number of one-year-olds who are not vaccinated against polio in Grenada 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 |
|---|---|---|---|
| 2014 | +838.1% | 35.2 one-year-olds | 330.22 one-year-olds |
| 2006 | +799.5% | 18.05 one-year-olds | 162.36 one-year-olds |
| 2004 | +700.9% | 36.1 one-year-olds | 289.12 one-year-olds |
| 2010 | +496.6% | 17.91 one-year-olds | 106.86 one-year-olds |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 722.77 one-year-olds | 179.76 one-year-olds | 1,601 one-year-olds | 10 |
| 1990s | 310.58 one-year-olds | 104.5 one-year-olds | 730.36 one-year-olds | 10 |
| 2000s | 79.9 one-year-olds | 17.91 one-year-olds | 289.12 one-year-olds | 10 |
| 2010s | 92.01 one-year-olds | 16.78 one-year-olds | 330.22 one-year-olds | 10 |
| 2020s | 324.1 one-year-olds | 193.62 one-year-olds | 397.04 one-year-olds | 4 |
Countries ranked near Grenada
More health data for Grenada
- Un projection of annual infant deaths, annual growth rate 0 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.0116 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,727 deaths per 1,000 people (2090)
- Number of infants who die before age 1 1 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 0 (2025)
- Population ages 00-04, female, annual growth rate -1.69 % 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 0.0283 units per person (2025)
- Population ages 00-04, male, annual growth rate -1.65 % change on previous year (2025)
- Population ages 00-04, male, per unit of GDP 0 units per US$ of GDP (2025)
Frequently asked questions
- What is number of one-year-olds who are not vaccinated against polio in Grenada?
- Number of one-year-olds who are not vaccinated against polio in Grenada was 193.62 one-year-olds in 2023, according to WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest number of one-year-olds who are not vaccinated against polio recorded in Grenada?
- The highest recorded value was 1,601 one-year-olds in 1980.
- What is the lowest number of one-year-olds who are not vaccinated against polio recorded in Grenada?
- The lowest recorded value was 16.78 one-year-olds in 2015.
- How does Grenada rank for number of one-year-olds who are not vaccinated against polio?
- Grenada ranks 173rd out of 194 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against polio rising or falling in Grenada?
- Over the last ten years it is up 450.1%. The long-run trend across the full record is volatile.
- Where does this Grenada 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 Number of one-year-olds who are not vaccinated against polio. Statizoid updates them automatically from the source API.
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About this data
Number of one-year-olds who have not had the third dose of either the oral or inactivated polio vaccine in a given year.