Number of one-year-olds who are not vaccinated against diphtheria in Singapore
Singapore: Number of one-year-olds who are not vaccinated against diphtheria was 1.26 one-year-olds per square kilometre in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against diphtheria in Singapore, 1980–2023
Source: Statizoid (derived). Measured in one-year-olds per square kilometre.
Analysis
In 2023, number of one-year-olds who are not vaccinated against diphtheria in Singapore stood at 1.26 one-year-olds per square kilometre. That is the lowest value across all 44 years on record.
That represents a change of down 33.0% on the previous year and down 34.5% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Singapore peaked at 14.65 one-year-olds per square kilometre in 1984 and was at its lowest, 1.26 one-year-olds per square kilometre, in 2023.
Singapore ranks 10th of 192 countries on this measure, in the top 10%.
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 diphtheria in Singapore, year by year
| Year | one-year-olds per square kilometre | Change |
|---|---|---|
| 1980 | 9.03 one-year-olds per square kilometre | — |
| 1981 | 7.57 one-year-olds per square kilometre | -16.2% |
| 1982 | 10.51 one-year-olds per square kilometre | +38.8% |
| 1983 | 10.23 one-year-olds per square kilometre | -2.6% |
| 1984 | 14.65 one-year-olds per square kilometre | +43.2% |
| 1985 | 13.85 one-year-olds per square kilometre | -5.5% |
| 1986 | 5.67 one-year-olds per square kilometre | -59.1% |
| 1987 | 2.49 one-year-olds per square kilometre | -56.1% |
| 1988 | 6.38 one-year-olds per square kilometre | +156.6% |
| 1989 | 7.14 one-year-olds per square kilometre | +11.8% |
| 1990 | 11.53 one-year-olds per square kilometre | +61.5% |
| 1991 | 6.97 one-year-olds per square kilometre | -39.6% |
| 1992 | 8.6 one-year-olds per square kilometre | +23.5% |
| 1993 | 6.29 one-year-olds per square kilometre | -26.9% |
| 1994 | 3.93 one-year-olds per square kilometre | -37.4% |
| 1995 | 1.58 one-year-olds per square kilometre | -59.8% |
| 1996 | 2.34 one-year-olds per square kilometre | +48.2% |
| 1997 | 1.54 one-year-olds per square kilometre | -34.4% |
| 1998 | 2.27 one-year-olds per square kilometre | +48.0% |
| 1999 | 2.21 one-year-olds per square kilometre | -2.9% |
| 2000 | 1.42 one-year-olds per square kilometre | -35.9% |
| 2001 | 2.83 one-year-olds per square kilometre | +99.9% |
| 2002 | 4.19 one-year-olds per square kilometre | +48.0% |
| 2003 | 2.6 one-year-olds per square kilometre | -37.9% |
| 2004 | 3.1 one-year-olds per square kilometre | +19.1% |
| 2005 | 2.43 one-year-olds per square kilometre | -21.4% |
| 2006 | 3.05 one-year-olds per square kilometre | +25.2% |
| 2007 | 1.86 one-year-olds per square kilometre | -38.8% |
| 2008 | 1.91 one-year-olds per square kilometre | +2.2% |
| 2009 | 1.95 one-year-olds per square kilometre | +2.1% |
| 2010 | 2.54 one-year-olds per square kilometre | +30.7% |
| 2011 | 2.48 one-year-olds per square kilometre | -2.5% |
| 2012 | 1.87 one-year-olds per square kilometre | -24.7% |
| 2013 | 1.93 one-year-olds per square kilometre | +3.2% |
| 2014 | 2.63 one-year-olds per square kilometre | +36.5% |
| 2015 | 2.66 one-year-olds per square kilometre | +1.2% |
| 2016 | 2.04 one-year-olds per square kilometre | -23.5% |
| 2017 | 2.72 one-year-olds per square kilometre | +33.5% |
| 2018 | 1.99 one-year-olds per square kilometre | -26.6% |
| 2019 | 1.96 one-year-olds per square kilometre | -1.9% |
| 2020 | 1.29 one-year-olds per square kilometre | -34.2% |
| 2021 | 1.27 one-year-olds per square kilometre | -1.5% |
| 2022 | 1.88 one-year-olds per square kilometre | +48.5% |
| 2023 | 1.26 one-year-olds per square kilometre | -33.0% |
Singapore compared with similar countries
- Singapore's 1.26 one-year-olds per square kilometre is above the median for high income countries, which is 0.048 one-year-olds per square kilometre, 26.3× the median. (63 countries reporting)
- Singapore's 1.26 one-year-olds per square kilometre is above the median for East Asia & Pacific, which is 0.1666 one-year-olds per square kilometre, 7.6× the median. (30 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 8.75 one-year-olds per square kilometre | 2.49 one-year-olds per square kilometre | 14.65 one-year-olds per square kilometre | 10 |
| 1990s | 4.73 one-year-olds per square kilometre | 1.54 one-year-olds per square kilometre | 11.53 one-year-olds per square kilometre | 10 |
| 2000s | 2.53 one-year-olds per square kilometre | 1.42 one-year-olds per square kilometre | 4.19 one-year-olds per square kilometre | 10 |
| 2010s | 2.28 one-year-olds per square kilometre | 1.87 one-year-olds per square kilometre | 2.72 one-year-olds per square kilometre | 10 |
| 2020s | 1.42 one-year-olds per square kilometre | 1.26 one-year-olds per square kilometre | 1.88 one-year-olds per square kilometre | 4 |
Countries ranked near Singapore
- 7 Monaco 1.68 one-year-olds per square kilometre compare
- 8 Vietnam 1.58 one-year-olds per square kilometre compare
- 9 Yemen 1.32 one-year-olds per square kilometre compare
- 11 Gambia 1.23 one-year-olds per square kilometre compare
- 12 Benin 1.22 one-year-olds per square kilometre compare
- 13 Pakistan 1.17 one-year-olds per square kilometre compare
More health data for Singapore
- Un projection of annual infant deaths, annual growth rate 0 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.5225 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,924 deaths per 1,000 people (2090)
- Number of infants who die before age 1 13 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 0 (2024)
- Population ages 00-04, female, annual growth rate 1.93 % 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 0.0196 units per person (2025)
- Population ages 00-04, male, annual growth rate 2.52 % 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 diphtheria in Singapore?
- Number of one-year-olds who are not vaccinated against diphtheria in Singapore was 1.26 one-year-olds per square kilometre in 2023, according to Statizoid (derived).
- What is the highest number of one-year-olds who are not vaccinated against diphtheria recorded in Singapore?
- The highest recorded value was 14.65 one-year-olds per square kilometre in 1984.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Singapore?
- The lowest recorded value was 1.26 one-year-olds per square kilometre in 2023.
- How does Singapore rank for number of one-year-olds who are not vaccinated against diphtheria?
- Singapore ranks 10th out of 192 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria rising or falling in Singapore?
- Over the last ten years it is down 34.5%. The long-run trend across the full record is volatile.
- Where does this Singapore data come from?
- The figures come from Statizoid (derived), published as part of Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus, per square kilometre. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 44 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus ÷ Land area (sq. km)
Computed from
- Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data
- Land area FAOSTAT, Food and Agriculture Organization of the United Nations (FAO)
Statizoid computes this series; the underlying measurements belong to the publishers named above. The arithmetic is applied to every country and year where both inputs report, and nothing is estimated unless the page says so.
About this data
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.