Number of one-year-olds who are not vaccinated against Haemophilus influenzae type B in Sao Tome and Principe
Sao Tome and Principe: Number of one-year-olds who are not vaccinated against Haemophilus influenzae type B was 812.63 one-year-olds in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against Haemophilus influenzae type B in Sao Tome and Principe, 2010–2023
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in one-year-olds.
Analysis
Sao Tome and Principe recorded 812.63 one-year-olds for number of one-year-olds who are not vaccinated against haemophilus influenzae type b in 2023. That is the highest value across all 14 years on record.
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 haemophilus influenzae type b in Sao Tome and Principe peaked at 812.63 one-year-olds in 2023 and was at its lowest, 119.36 one-year-olds, in 2010.
That places Sao Tome and Principe 152nd out of 191 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 Haemophilus influenzae type B in Sao Tome and Principe, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 2010 | 119.36 one-year-olds | — |
| 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 |
|---|---|---|---|---|
| 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 75-79, female, annual growth rate 0.7042 % change on previous year (2025)
- Population ages 75-79, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 75-79, female, per capita 0.0036 units per person (2025)
- Population ages 75-79, male, annual growth rate 2.03 % change on previous year (2025)
- Population ages 75-79, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 75-79, male, per capita 0.0027 units per person (2025)
Frequently asked questions
- What is number of one-year-olds who are not vaccinated against haemophilus influenzae type b in Sao Tome and Principe?
- Number of one-year-olds who are not vaccinated against haemophilus influenzae type 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 haemophilus influenzae type b recorded in Sao Tome and Principe?
- The highest recorded value was 812.63 one-year-olds in 2023.
- What is the lowest number of one-year-olds who are not vaccinated against haemophilus influenzae type b recorded in Sao Tome and Principe?
- The lowest recorded value was 119.36 one-year-olds in 2010.
- How does Sao Tome and Principe rank for number of one-year-olds who are not vaccinated against haemophilus influenzae type b?
- Sao Tome and Principe ranks 152nd out of 191 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against haemophilus influenzae type 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 Haemophilus influenzae type 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 Haemophilus influenzae type b vaccine in a given year.