Number of one-year-olds who are not vaccinated against diphtheria in Sri Lanka
Sri Lanka: Number of one-year-olds who are not vaccinated against diphtheria was 0.0001 one-year-olds per person in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against diphtheria in Sri Lanka, 1980–2023
Source: Statizoid (derived). Measured in one-year-olds per person.
Analysis
In 2023, number of one-year-olds who are not vaccinated against diphtheria in Sri Lanka stood at 0.0001 one-year-olds per person. That is the lowest value across all 44 years on record.
The figure is down 50.0% on the previous year and down 15.3% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Sri Lanka peaked at 0.0148 one-year-olds per person in 1981 and was at its lowest, 0.0001 one-year-olds per person, in 2023.
Sri Lanka ranks 175th of 192 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 diphtheria in Sri Lanka, year by year
| Year | one-year-olds per person | Change |
|---|---|---|
| 1980 | 0.0146 one-year-olds per person | — |
| 1981 | 0.0148 one-year-olds per person | +1.5% |
| 1982 | 0.0114 one-year-olds per person | -22.9% |
| 1983 | 0.0092 one-year-olds per person | -19.7% |
| 1984 | 0.0081 one-year-olds per person | -11.7% |
| 1985 | 0.0068 one-year-olds per person | -16.0% |
| 1986 | 0.0055 one-year-olds per person | -20.0% |
| 1987 | 0.0048 one-year-olds per person | -11.8% |
| 1988 | 0.0034 one-year-olds per person | -28.5% |
| 1989 | 0.0026 one-year-olds per person | -25.3% |
| 1990 | 0.0028 one-year-olds per person | +7.3% |
| 1991 | 0.0028 one-year-olds per person | +0.4% |
| 1992 | 0.0023 one-year-olds per person | -15.2% |
| 1993 | 0.0019 one-year-olds per person | -17.4% |
| 1994 | 0.0023 one-year-olds per person | +19.6% |
| 1995 | 0.0013 one-year-olds per person | -42.0% |
| 1996 | 0.0015 one-year-olds per person | +12.7% |
| 1997 | 0.0006 one-year-olds per person | -63.0% |
| 1998 | 0.0011 one-year-olds per person | +97.9% |
| 1999 | 0.0002 one-year-olds per person | -83.5% |
| 2000 | 0.0002 one-year-olds per person | -1.8% |
| 2001 | 0.0004 one-year-olds per person | +98.4% |
| 2002 | 0.0004 one-year-olds per person | +1.5% |
| 2003 | 0.0002 one-year-olds per person | -49.6% |
| 2004 | 0.0005 one-year-olds per person | +198.4% |
| 2005 | 0.0002 one-year-olds per person | -66.9% |
| 2006 | 0.0004 one-year-olds per person | +99.3% |
| 2007 | 0.0004 one-year-olds per person | -0.3% |
| 2008 | 0.0004 one-year-olds per person | -0.5% |
| 2009 | 0.0005 one-year-olds per person | +49.0% |
| 2010 | 0.0002 one-year-olds per person | -67.0% |
| 2011 | 0.0002 one-year-olds per person | -1.2% |
| 2012 | 0.0002 one-year-olds per person | -1.7% |
| 2013 | 0.0002 one-year-olds per person | +2.4% |
| 2014 | 0.0002 one-year-olds per person | -0.6% |
| 2015 | 0.0002 one-year-olds per person | -1.8% |
| 2016 | 0.0002 one-year-olds per person | -3.2% |
| 2017 | 0.0002 one-year-olds per person | -2.9% |
| 2018 | 0.0002 one-year-olds per person | -2.2% |
| 2019 | 0.0002 one-year-olds per person | -1.5% |
| 2020 | 0.0006 one-year-olds per person | +294.9% |
| 2021 | 0.0006 one-year-olds per person | -1.9% |
| 2022 | 0.0003 one-year-olds per person | -50.5% |
| 2023 | 0.0001 one-year-olds per person | -50.0% |
Sri Lanka compared with similar countries
- Sri Lanka's 0.0001 one-year-olds per person is below the median for upper middle income countries, which is 0.0015 one-year-olds per person, 10% of the median. (58 countries reporting)
- Sri Lanka's 0.0001 one-year-olds per person is below the median for South Asia, which is 0.0004 one-year-olds per person, 36% of the median. (6 countries reporting)
Biggest year-on-year movements
Years where Number of one-year-olds who are not vaccinated against diphtheria in Sri Lanka 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 |
|---|---|---|---|
| 2020 | +294.9% | 0.0002 one-year-olds per person | 0.0006 one-year-olds per person |
| 2004 | +198.4% | 0.0002 one-year-olds per person | 0.0005 one-year-olds per person |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.0081 one-year-olds per person | 0.0026 one-year-olds per person | 0.0148 one-year-olds per person | 10 |
| 1990s | 0.0017 one-year-olds per person | 0.0002 one-year-olds per person | 0.0028 one-year-olds per person | 10 |
| 2000s | 0.0003 one-year-olds per person | 0.0002 one-year-olds per person | 0.0005 one-year-olds per person | 10 |
| 2010s | 0.0002 one-year-olds per person | 0.0002 one-year-olds per person | 0.0002 one-year-olds per person | 10 |
| 2020s | 0.0004 one-year-olds per person | 0.0001 one-year-olds per person | 0.0006 one-year-olds per person | 4 |
Countries ranked near Sri Lanka
- 172 Belarus 0.0002 one-year-olds per person compare
- 173 Malta 0.0002 one-year-olds per person compare
- 174 Singapore 0.0002 one-year-olds per person compare
- 176 Brunei Darussalam 0.0001 one-year-olds per person compare
- 177 Iran, Islamic Republic of 0.0001 one-year-olds per person compare
- 178 Korea, Democratic People's Republic of 0.0001 one-year-olds per person compare
More health data for Sri Lanka
- Un projection of annual infant deaths, annual growth rate -1.62 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.7332 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,250 deaths per 1,000 people (2090)
- Number of infants who die before age 1 304 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 0 (2025)
- Population ages 00-04, female, annual growth rate -2.13 % 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 0.0339 units per person (2025)
- Population ages 00-04, male, annual growth rate -2.12 % 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 Sri Lanka?
- Number of one-year-olds who are not vaccinated against diphtheria in Sri Lanka was 0.0001 one-year-olds per person in 2023, according to Statizoid (derived).
- What is the highest number of one-year-olds who are not vaccinated against diphtheria recorded in Sri Lanka?
- The highest recorded value was 0.0148 one-year-olds per person in 1981.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Sri Lanka?
- The lowest recorded value was 0.0001 one-year-olds per person in 2023.
- How does Sri Lanka rank for number of one-year-olds who are not vaccinated against diphtheria?
- Sri Lanka ranks 175th out of 192 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria rising or falling in Sri Lanka?
- Over the last ten years it is down 15.3%. The long-run trend across the full record is volatile.
- Where does this Sri Lanka 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 capita. 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 Population, total, 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 ÷ Population, total
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
- Population, total World Population Prospects, United Nations (UN)
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 Population, total, matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.