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 -50.37 % change on previous year in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against diphtheria in Sri Lanka, 1981–2023
Source: Statizoid (derived). Measured in % change on previous year.
Analysis
Sri Lanka recorded -50.37 % change on previous year for number of one-year-olds who are not vaccinated against diphtheria in 2023.
Compared with earlier readings it is up 0.1% on the previous year and down 12,225.4% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Sri Lanka peaked at 297.02 % change on previous year in 2020 and was at its lowest, -83.24 % change on previous year, in 1999.
Sri Lanka ranks 183rd 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 diphtheria in Sri Lanka, year by year
| Year | % change on previous year | Change |
|---|---|---|
| 1981 | 3.2 % change on previous year | — |
| 1982 | -21.98 % change on previous year | -787.4% |
| 1983 | -19.18 % change on previous year | -12.7% |
| 1984 | -11.36 % change on previous year | -40.8% |
| 1985 | -15.4 % change on previous year | +35.5% |
| 1986 | -19.03 % change on previous year | +23.6% |
| 1987 | -10.78 % change on previous year | -43.3% |
| 1988 | -27.82 % change on previous year | +158.0% |
| 1989 | -24.55 % change on previous year | -11.7% |
| 1990 | 7.94 % change on previous year | -132.3% |
| 1991 | 1.17 % change on previous year | -85.3% |
| 1992 | -13.89 % change on previous year | -1286.3% |
| 1993 | -15.99 % change on previous year | +15.1% |
| 1994 | 21.4 % change on previous year | -233.9% |
| 1995 | -41.08 % change on previous year | -291.9% |
| 1996 | 14.87 % change on previous year | -136.2% |
| 1997 | -62.3 % change on previous year | -519.1% |
| 1998 | 101.65 % change on previous year | -263.2% |
| 1999 | -83.24 % change on previous year | -181.9% |
| 2000 | 0.0279 % change on previous year | -100.0% |
| 2001 | 101.59 % change on previous year | +364652.1% |
| 2002 | 2.53 % change on previous year | -97.5% |
| 2003 | -49.18 % change on previous year | -2043.6% |
| 2004 | 200.45 % change on previous year | -507.6% |
| 2005 | -66.64 % change on previous year | -133.2% |
| 2006 | 100.63 % change on previous year | -251.0% |
| 2007 | 0.3727 % change on previous year | -99.6% |
| 2008 | 0.2047 % change on previous year | -45.1% |
| 2009 | 49.92 % change on previous year | +24290.2% |
| 2010 | -66.77 % change on previous year | -233.8% |
| 2011 | -0.5577 % change on previous year | -99.2% |
| 2012 | -0.9342 % change on previous year | +67.5% |
| 2013 | -0.4087 % change on previous year | -56.3% |
| 2014 | 0.3131 % change on previous year | -176.6% |
| 2015 | -0.8938 % change on previous year | -385.5% |
| 2016 | -2.07 % change on previous year | +132.1% |
| 2017 | -1.78 % change on previous year | -14.2% |
| 2018 | -1.23 % change on previous year | -31.0% |
| 2019 | -0.8461 % change on previous year | -31.1% |
| 2020 | 297.02 % change on previous year | -35202.6% |
| 2021 | -0.8715 % change on previous year | -100.3% |
| 2022 | -50.43 % change on previous year | +5686.2% |
| 2023 | -50.37 % change on previous year | -0.1% |
Sri Lanka compared with similar countries
- Sri Lanka's -50.37 % change on previous year is below the median for upper middle income countries, which is -6.86 % change on previous year, 7.3× the median. (58 countries reporting)
- Sri Lanka's -50.37 % change on previous year is below the median for South Asia, which is -21.36 % change on previous year, 2.4× 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 |
|---|---|---|---|
| 2001 | +364652.1% | 0.0279 % change on previous year | 101.59 % change on previous year |
| 2020 | +35202.6% | -0.8461 % change on previous year | 297.02 % change on previous year |
| 2009 | +24290.2% | 0.2047 % change on previous year | 49.92 % change on previous year |
| 2022 | -5686.2% | -0.8715 % change on previous year | -50.43 % change on previous year |
| 2003 | -2043.6% | 2.53 % change on previous year | -49.18 % change on previous year |
| 1992 | -1286.3% | 1.17 % change on previous year | -13.89 % change on previous year |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | -16.32 % change on previous year | -27.82 % change on previous year | 3.2 % change on previous year | 9 |
| 1990s | -6.95 % change on previous year | -83.24 % change on previous year | 101.65 % change on previous year | 10 |
| 2000s | 33.99 % change on previous year | -66.64 % change on previous year | 200.45 % change on previous year | 10 |
| 2010s | -7.52 % change on previous year | -66.77 % change on previous year | 0.3131 % change on previous year | 10 |
| 2020s | 48.84 % change on previous year | -50.43 % change on previous year | 297.02 % change on previous year | 4 |
Countries ranked near Sri Lanka
- 180 Trinidad and Tobago -44.19 % change on previous year compare
- 181 Bhutan -49.89 % change on previous year compare
- 182 Jordan -50.15 % change on previous year compare
- 184 Jamaica -50.44 % change on previous year compare
- 185 Palau -51.24 % change on previous year compare
- 186 Ukraine -52.32 % change on previous year 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 -50.37 % change on previous year 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 297.02 % change on previous year in 2020.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Sri Lanka?
- The lowest recorded value was -83.24 % change on previous year in 1999.
- How does Sri Lanka rank for number of one-year-olds who are not vaccinated against diphtheria?
- Sri Lanka ranks 183rd out of 194 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 12,225.4%. 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, annual growth rate. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 43 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
The year-on-year percentage change in Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.
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
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
The year-on-year percentage change in Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.