Number of one-year-olds who are not vaccinated against diphtheria in Sierra Leone
Sierra Leone: Number of one-year-olds who are not vaccinated against diphtheria was 0 one-year-olds per US$ of GDP in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against diphtheria in Sierra Leone, 1999–2023
Source: Statizoid (derived). Measured in one-year-olds per US$ of GDP.
Analysis
Sierra Leone recorded 0 one-year-olds per US$ of GDP for number of one-year-olds who are not vaccinated against diphtheria in 2023.
The figure is up 11.8% on the previous year and up 41.8% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Sierra Leone peaked at 0.0001 one-year-olds per US$ of GDP in 2000 and was at its lowest, 0 one-year-olds per US$ of GDP, in 2019.
Sierra Leone ranks 30th of 191 countries on this measure, in the top 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 Sierra Leone, year by year
| Year | one-year-olds per US$ of GDP | Change |
|---|---|---|
| 1999 | 0.0001 one-year-olds per US$ of GDP | — |
| 2000 | 0.0001 one-year-olds per US$ of GDP | +6.0% |
| 2001 | 0.0001 one-year-olds per US$ of GDP | -55.7% |
| 2002 | 0 one-year-olds per US$ of GDP | -30.4% |
| 2003 | 0 one-year-olds per US$ of GDP | -46.3% |
| 2004 | 0 one-year-olds per US$ of GDP | +27.2% |
| 2005 | 0 one-year-olds per US$ of GDP | -11.3% |
| 2006 | 0 one-year-olds per US$ of GDP | -19.4% |
| 2007 | 0 one-year-olds per US$ of GDP | -8.7% |
| 2008 | 0 one-year-olds per US$ of GDP | -43.1% |
| 2009 | 0 one-year-olds per US$ of GDP | -25.4% |
| 2010 | 0 one-year-olds per US$ of GDP | -17.3% |
| 2011 | 0 one-year-olds per US$ of GDP | -30.2% |
| 2012 | 0 one-year-olds per US$ of GDP | -34.4% |
| 2013 | 0 one-year-olds per US$ of GDP | -26.3% |
| 2014 | 0 one-year-olds per US$ of GDP | +108.1% |
| 2015 | 0 one-year-olds per US$ of GDP | -6.9% |
| 2016 | 0 one-year-olds per US$ of GDP | +27.6% |
| 2017 | 0 one-year-olds per US$ of GDP | -33.4% |
| 2018 | 0 one-year-olds per US$ of GDP | -36.1% |
| 2019 | 0 one-year-olds per US$ of GDP | -29.0% |
| 2020 | 0 one-year-olds per US$ of GDP | +77.7% |
| 2021 | 0 one-year-olds per US$ of GDP | -16.3% |
| 2022 | 0 one-year-olds per US$ of GDP | +14.1% |
| 2023 | 0 one-year-olds per US$ of GDP | +11.8% |
Sierra Leone compared with similar countries
- Sierra Leone's 0 one-year-olds per US$ of GDP is below the median for low income countries, which is 0 one-year-olds per US$ of GDP, 38% of the median. (24 countries reporting)
- Sierra Leone's 0 one-year-olds per US$ of GDP is above the median for Sub-Saharan Africa, which is 0 one-year-olds per US$ of GDP, 1.0× the median. (48 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 0.0001 one-year-olds per US$ of GDP | 0.0001 one-year-olds per US$ of GDP | 0.0001 one-year-olds per US$ of GDP | 1 |
| 2000s | 0 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 0.0001 one-year-olds per US$ of GDP | 10 |
| 2010s | 0 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 10 |
| 2020s | 0 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 0 one-year-olds per US$ of GDP | 4 |
Countries ranked near Sierra Leone
- 27 Angola 0 one-year-olds per US$ of GDP compare
- 28 Comoros 0 one-year-olds per US$ of GDP compare
- 29 Myanmar 0 one-year-olds per US$ of GDP compare
- 31 Burkina Faso 0 one-year-olds per US$ of GDP compare
- 32 Uganda 0 one-year-olds per US$ of GDP compare
- 33 Eritrea 0 one-year-olds per US$ of GDP compare
More health data for Sierra Leone
- Un projection of annual infant deaths, annual growth rate -2.34 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.773 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,199 deaths per 1,000 people (2090)
- Number of infants who die before age 1 4,209 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 38 (2025)
- Population ages 00-04, female, annual growth rate 0.6447 % change on previous year (2025)
- Population ages 00-04, female, per unit of GDP 0.0001 units per US$ of GDP (2025)
- Population ages 00-04, female, per capita 0.0663 units per person (2025)
- Population ages 00-04, male, annual growth rate 0.6611 % change on previous year (2025)
- Population ages 00-04, male, per unit of GDP 0.0001 units per US$ of GDP (2025)
Frequently asked questions
- What is number of one-year-olds who are not vaccinated against diphtheria in Sierra Leone?
- Number of one-year-olds who are not vaccinated against diphtheria in Sierra Leone was 0 one-year-olds per US$ of GDP in 2023, according to Statizoid (derived).
- What is the highest number of one-year-olds who are not vaccinated against diphtheria recorded in Sierra Leone?
- The highest recorded value was 0.0001 one-year-olds per US$ of GDP in 2000.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Sierra Leone?
- The lowest recorded value was 0 one-year-olds per US$ of GDP in 2019.
- How does Sierra Leone rank for number of one-year-olds who are not vaccinated against diphtheria?
- Sierra Leone ranks 30th out of 191 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria rising or falling in Sierra Leone?
- Over the last ten years it is up 41.8%. The long-run trend across the full record is volatile.
- Where does this Sierra Leone 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 unit of GDP. Statizoid updates them automatically from the source API.
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How this figure is calculated
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus divided by GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.
Number of one-year-olds who are not vaccinated against diphtheria, pertussis and tetanus ÷ GDP (current US$)
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
- GDP Country official statistics, National Statistical Organizations and/or Central Banks
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 GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.