Number of one-year-olds who are not vaccinated against hepatitis B in Sao Tome and Principe
Sao Tome and Principe: Number of one-year-olds who are not vaccinated against hepatitis B was 812.63 one-year-olds in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against hepatitis B in Sao Tome and Principe, 2003–2023
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in one-year-olds.
Analysis
The most recent figure for number of one-year-olds who are not vaccinated against hepatitis b in Sao Tome and Principe is 812.63 one-year-olds, measured in 2023.
That represents a change of up 66.1% on the previous year and up 344.9% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against hepatitis b in Sao Tome and Principe peaked at 3,086 one-year-olds in 2003 and was at its lowest, 59.16 one-year-olds, in 2008.
That places Sao Tome and Principe 153rd out of 189 countries with data for 2023, putting it 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 hepatitis B in Sao Tome and Principe, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 2003 | 3,086 one-year-olds | — |
| 2004 | 1,652 one-year-olds | -46.5% |
| 2005 | 223.4 one-year-olds | -86.5% |
| 2006 | 1,422 one-year-olds | +536.5% |
| 2007 | 754.91 one-year-olds | -46.9% |
| 2008 | 59.16 one-year-olds | -92.2% |
| 2009 | 119.52 one-year-olds | +102.0% |
| 2010 | 119.36 one-year-olds | -0.1% |
| 2011 | 235.64 one-year-olds | +97.4% |
| 2012 | 232.24 one-year-olds | -1.4% |
| 2013 | 182.64 one-year-olds | -21.4% |
| 2014 | 318.7 one-year-olds | +74.5% |
| 2015 | 252.52 one-year-olds | -20.8% |
| 2016 | 248.76 one-year-olds | -1.5% |
| 2017 | 304.5 one-year-olds | +22.4% |
| 2018 | 297.95 one-year-olds | -2.2% |
| 2019 | 293.9 one-year-olds | -1.4% |
| 2020 | 238.4 one-year-olds | -18.9% |
| 2021 | 181.5 one-year-olds | -23.9% |
| 2022 | 489.36 one-year-olds | +169.6% |
| 2023 | 812.63 one-year-olds | +66.1% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 1,045 one-year-olds | 59.16 one-year-olds | 3,086 one-year-olds | 7 |
| 2010s | 248.62 one-year-olds | 119.36 one-year-olds | 318.7 one-year-olds | 10 |
| 2020s | 430.47 one-year-olds | 181.5 one-year-olds | 812.63 one-year-olds | 4 |
Countries ranked near Sao Tome and Principe
More health data for Sao Tome and Principe
- Un projection of annual infant deaths, annual growth rate -6.25 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 1.35 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 793.5 deaths per 1,000 people (2090)
- Number of infants who die before age 1 15 deaths (2100)
- Population ages 0-14, female, annual growth rate 0.8948 % change on previous year (2025)
- Population ages 0-14, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 0-14, female, per capita 0.1858 units per person (2025)
- Population ages 0-14, male, annual growth rate 1.1 % change on previous year (2025)
- Population ages 0-14, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 0-14, male, per capita 0.1887 units per person (2025)
Frequently asked questions
- What is number of one-year-olds who are not vaccinated against hepatitis b in Sao Tome and Principe?
- Number of one-year-olds who are not vaccinated against hepatitis b in Sao Tome and Principe was 812.63 one-year-olds in 2023, according to WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest number of one-year-olds who are not vaccinated against hepatitis b recorded in Sao Tome and Principe?
- The highest recorded value was 3,086 one-year-olds in 2003.
- What is the lowest number of one-year-olds who are not vaccinated against hepatitis b recorded in Sao Tome and Principe?
- The lowest recorded value was 59.16 one-year-olds in 2008.
- How does Sao Tome and Principe rank for number of one-year-olds who are not vaccinated against hepatitis b?
- Sao Tome and Principe ranks 153rd out of 189 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against hepatitis b rising or falling in Sao Tome and Principe?
- Over the last ten years it is up 344.9%. The long-run trend across the full record is volatile.
- Where does this Sao Tome and Principe data come from?
- The figures come from WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as part of Number of one-year-olds who are not vaccinated against hepatitis B. Statizoid updates them automatically from the source API.
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About this data
Number of one-year-olds who have not had three doses of the hepatitis B vaccine in a given year.