Number of one-year-olds who are not fully vaccinated against in Korea
Korea: Number of one-year-olds who are not fully vaccinated against was 5,087 one-year-olds in 2023. ◆ Volatile
Number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus in Korea, 1981–2023
Source: WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in one-year-olds.
Analysis
In 2023, number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus in Korea stood at 5,087 one-year-olds.
The figure is down 3.1% on the previous year and up 11.1% over ten years.
Over the whole period, number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus in Korea peaked at 317,800 one-year-olds in 1982 and was at its lowest, 4,504 one-year-olds, in 2014.
That places Korea 111th out of 195 countries with data for 2023, putting it in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Number of one-year-olds who are not fully vaccinated against in Korea, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 1981 | 313,223 one-year-olds | — |
| 1982 | 317,800 one-year-olds | +1.5% |
| 1983 | 252,862 one-year-olds | -20.4% |
| 1984 | 187,113 one-year-olds | -26.0% |
| 1985 | 173,149 one-year-olds | -7.5% |
| 1986 | 159,558 one-year-olds | -7.8% |
| 1987 | 285,922 one-year-olds | +79.2% |
| 1988 | 285,471 one-year-olds | -0.2% |
| 1989 | 74,444 one-year-olds | -73.9% |
| 1990 | 176,061 one-year-olds | +136.5% |
| 1991 | 139,533 one-year-olds | -20.7% |
| 1992 | 107,119 one-year-olds | -23.2% |
| 1993 | 83,678 one-year-olds | -21.9% |
| 1994 | 49,827 one-year-olds | -40.5% |
| 1995 | 7,102 one-year-olds | -85.7% |
| 1996 | 69,258 one-year-olds | +875.1% |
| 1997 | 135,062 one-year-olds | +95.0% |
| 1998 | 172,529 one-year-olds | +27.7% |
| 1999 | 90,390 one-year-olds | -47.6% |
| 2000 | 18,632 one-year-olds | -79.4% |
| 2001 | 18,282 one-year-olds | -1.9% |
| 2002 | 17,529 one-year-olds | -4.1% |
| 2003 | 15,916 one-year-olds | -9.2% |
| 2004 | 59,281 one-year-olds | +272.5% |
| 2005 | 18,873 one-year-olds | -68.2% |
| 2006 | 8,905 one-year-olds | -52.8% |
| 2007 | 39,010 one-year-olds | +338.1% |
| 2008 | 26,354 one-year-olds | -32.4% |
| 2009 | 26,730 one-year-olds | +1.4% |
| 2010 | 27,368 one-year-olds | +2.4% |
| 2011 | 4,659 one-year-olds | -83.0% |
| 2012 | 4,621 one-year-olds | -0.8% |
| 2013 | 4,579 one-year-olds | -0.9% |
| 2014 | 4,504 one-year-olds | -1.6% |
| 2015 | 8,747 one-year-olds | +94.2% |
| 2016 | 8,599 one-year-olds | -1.7% |
| 2017 | 12,268 one-year-olds | +42.7% |
| 2018 | 7,471 one-year-olds | -39.1% |
| 2019 | 6,831 one-year-olds | -8.6% |
| 2020 | 6,303 one-year-olds | -7.7% |
| 2021 | 5,700 one-year-olds | -9.6% |
| 2022 | 5,252 one-year-olds | -7.9% |
| 2023 | 5,087 one-year-olds | -3.1% |
Korea compared with similar countries
- Korea's 5,087 one-year-olds is above the median for high income countries, which is 2,216 one-year-olds, 2.3× the median. (63 countries reporting)
- Korea's 5,087 one-year-olds is above the median for East Asia & Pacific, which is 4,252 one-year-olds, 1.2× the median. (30 countries reporting)
Biggest year-on-year movements
Years where Number of one-year-olds who are not fully vaccinated against in Korea 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 |
|---|---|---|---|
| 1996 | +875.1% | 7,102 one-year-olds | 69,258 one-year-olds |
| 2007 | +338.1% | 8,905 one-year-olds | 39,010 one-year-olds |
| 2004 | +272.5% | 15,916 one-year-olds | 59,281 one-year-olds |
| 1990 | +136.5% | 74,444 one-year-olds | 176,061 one-year-olds |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 227,727 one-year-olds | 74,444 one-year-olds | 317,800 one-year-olds | 9 |
| 1990s | 103,056 one-year-olds | 7,102 one-year-olds | 176,061 one-year-olds | 10 |
| 2000s | 24,951 one-year-olds | 8,905 one-year-olds | 59,281 one-year-olds | 10 |
| 2010s | 8,965 one-year-olds | 4,504 one-year-olds | 27,368 one-year-olds | 10 |
| 2020s | 5,586 one-year-olds | 5,087 one-year-olds | 6,303 one-year-olds | 4 |
Countries ranked near Korea
More health data for Korea
- Un projection of annual infant deaths, annual growth rate -1.43 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.1935 % change on previous year (2090)
- Number of infants who die before age 1 69 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 0 (2025)
- Population ages 00-04, female, annual growth rate -2.66 % 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 0.0118 units per person (2025)
- Population ages 00-04, male, annual growth rate -2.76 % 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 0.0124 units per person (2025)
Frequently asked questions
- What is number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus in Korea?
- Number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus in Korea was 5,087 one-year-olds in 2023, according to WHO & UNICEF (2026); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus recorded in Korea?
- The highest recorded value was 317,800 one-year-olds in 1982.
- What is the lowest number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus recorded in Korea?
- The lowest recorded value was 4,504 one-year-olds in 2014.
- How does Korea rank for number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus?
- Korea ranks 111th out of 195 countries with data for 2023.
- Is number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus rising or falling in Korea?
- Over the last ten years it is up 11.1%. The long-run trend across the full record is volatile.
- Where does this Korea 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 Number of one-year-olds who are not fully vaccinated against diphtheria, pertussis and tetanus. Statizoid updates them automatically from the source API.
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About this data
Number of one-year-olds who have not had three doses of the combined diphtheria, tetanus and pertussis vaccine in a given year.