Number of one-year-olds who are not vaccinated against diphtheria in Bulgaria
Bulgaria: Number of one-year-olds who are not vaccinated against diphtheria was 0.0008 one-year-olds per person in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against diphtheria in Bulgaria, 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 Bulgaria stood at 0.0008 one-year-olds per person.
That represents a change of down 7.3% on the previous year and up 61.4% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Bulgaria peaked at 0.0011 one-year-olds per person in 2014 and was at its lowest, 0.0001 one-year-olds per person, in 1991.
Bulgaria ranks 120th of 192 countries on this measure, 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 vaccinated against diphtheria in Bulgaria, year by year
| Year | one-year-olds per person | Change |
|---|---|---|
| 1980 | 0.0003 one-year-olds per person | — |
| 1981 | 0.0001 one-year-olds per person | -51.4% |
| 1982 | 0.0001 one-year-olds per person | -4.4% |
| 1983 | 0.0001 one-year-olds per person | -1.7% |
| 1984 | 0.0001 one-year-olds per person | -0.7% |
| 1985 | 0.0001 one-year-olds per person | -1.2% |
| 1986 | 0.0001 one-year-olds per person | +1.2% |
| 1987 | 0.0001 one-year-olds per person | -0.4% |
| 1988 | 0.0001 one-year-olds per person | -3.7% |
| 1989 | 0.0001 one-year-olds per person | -1.1% |
| 1990 | 0.0001 one-year-olds per person | -1.6% |
| 1991 | 0.0001 one-year-olds per person | -4.9% |
| 1992 | 0.0002 one-year-olds per person | +85.0% |
| 1993 | 0.0002 one-year-olds per person | -6.2% |
| 1994 | 0.0007 one-year-olds per person | +236.5% |
| 1995 | 0.0004 one-year-olds per person | -45.9% |
| 1996 | 0.0004 one-year-olds per person | +15.9% |
| 1997 | 0.0005 one-year-olds per person | +14.6% |
| 1998 | 0.0004 one-year-olds per person | -21.0% |
| 1999 | 0.0003 one-year-olds per person | -23.7% |
| 2000 | 0.0006 one-year-olds per person | +86.5% |
| 2001 | 0.0005 one-year-olds per person | -10.1% |
| 2002 | 0.0006 one-year-olds per person | +16.1% |
| 2003 | 0.0003 one-year-olds per person | -43.1% |
| 2004 | 0.0004 one-year-olds per person | +26.1% |
| 2005 | 0.0004 one-year-olds per person | -17.4% |
| 2006 | 0.0005 one-year-olds per person | +29.1% |
| 2007 | 0.0005 one-year-olds per person | +3.2% |
| 2008 | 0.0005 one-year-olds per person | +3.2% |
| 2009 | 0.0006 one-year-olds per person | +23.3% |
| 2010 | 0.0006 one-year-olds per person | +3.6% |
| 2011 | 0.0005 one-year-olds per person | -18.0% |
| 2012 | 0.0005 one-year-olds per person | -5.2% |
| 2013 | 0.0005 one-year-olds per person | -1.1% |
| 2014 | 0.0011 one-year-olds per person | +136.5% |
| 2015 | 0.0009 one-year-olds per person | -23.9% |
| 2016 | 0.0008 one-year-olds per person | -9.5% |
| 2017 | 0.0008 one-year-olds per person | -0.3% |
| 2018 | 0.0008 one-year-olds per person | +0.4% |
| 2019 | 0.0007 one-year-olds per person | -13.0% |
| 2020 | 0.0009 one-year-olds per person | +27.1% |
| 2021 | 0.001 one-year-olds per person | +20.0% |
| 2022 | 0.0008 one-year-olds per person | -19.5% |
| 2023 | 0.0008 one-year-olds per person | -7.3% |
Bulgaria compared with similar countries
- Bulgaria's 0.0008 one-year-olds per person is above the median for high income countries, which is 0.0004 one-year-olds per person, 1.7× the median. (63 countries reporting)
- Bulgaria's 0.0008 one-year-olds per person is above the median for Europe & Central Asia, which is 0.0006 one-year-olds per person, 1.2× the median. (51 countries reporting)
Biggest year-on-year movements
Years where Number of one-year-olds who are not vaccinated against diphtheria in Bulgaria 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 |
|---|---|---|---|
| 1994 | +236.5% | 0.0002 one-year-olds per person | 0.0007 one-year-olds per person |
| 2014 | +136.5% | 0.0005 one-year-olds per person | 0.0011 one-year-olds per person |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.0002 one-year-olds per person | 0.0001 one-year-olds per person | 0.0003 one-year-olds per person | 10 |
| 1990s | 0.0003 one-year-olds per person | 0.0001 one-year-olds per person | 0.0007 one-year-olds per person | 10 |
| 2000s | 0.0005 one-year-olds per person | 0.0003 one-year-olds per person | 0.0006 one-year-olds per person | 10 |
| 2010s | 0.0007 one-year-olds per person | 0.0005 one-year-olds per person | 0.0011 one-year-olds per person | 10 |
| 2020s | 0.0009 one-year-olds per person | 0.0008 one-year-olds per person | 0.001 one-year-olds per person | 4 |
Countries ranked near Bulgaria
- 117 Mongolia 0.0008 one-year-olds per person compare
- 118 Finland 0.0008 one-year-olds per person compare
- 119 Ireland 0.0008 one-year-olds per person compare
- 121 Canada 0.0007 one-year-olds per person compare
- 122 Saint Vincent and the Grenadines 0.0007 one-year-olds per person compare
- 123 Armenia 0.0007 one-year-olds per person compare
More health data for Bulgaria
- Un projection of annual infant deaths, annual growth rate -2.5 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate -0.615 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,422 deaths per 1,000 people (2090)
- Number of infants who die before age 1 39 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 0 (2025)
- Population ages 00-04, female, annual growth rate 0.2564 % 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 0.0222 units per person (2025)
- Population ages 00-04, male, annual growth rate 0.3643 % 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 Bulgaria?
- Number of one-year-olds who are not vaccinated against diphtheria in Bulgaria was 0.0008 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 Bulgaria?
- The highest recorded value was 0.0011 one-year-olds per person in 2014.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Bulgaria?
- The lowest recorded value was 0.0001 one-year-olds per person in 1991.
- How does Bulgaria rank for number of one-year-olds who are not vaccinated against diphtheria?
- Bulgaria ranks 120th out of 192 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria rising or falling in Bulgaria?
- Over the last ten years it is up 61.4%. The long-run trend across the full record is volatile.
- Where does this Bulgaria 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.