Number of one-year-olds who are not vaccinated against hepatitis B in Samoa
Samoa: Number of one-year-olds who are not vaccinated against hepatitis B was 938.4 one-year-olds in 2023. ◆ Volatile
Latest (2023)
938.4 one-year-olds
Change on year
down 31.2%
World rank
149th
of 189 countries
All-time high
5,225 one-year-olds
in 1993
All-time low
55.27 one-year-olds
in 1997
Years of data
32
1992–2023
Number of one-year-olds who are not vaccinated against hepatitis B in Samoa, 1992–2023
Source: WHO & UNICEF (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in one-year-olds.
Analysis
In 2023, number of one-year-olds who are not vaccinated against hepatitis b in Samoa stood at 938.4 one-year-olds.
That represents a change of down 31.2% on the previous year and up 5.8% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against hepatitis b in Samoa peaked at 5,225 one-year-olds in 1993 and was at its lowest, 55.27 one-year-olds, in 1997.
Samoa ranks 149th of 189 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 hepatitis B in Samoa, year by year
| Year | one-year-olds | Change |
|---|---|---|
| 1992 | 4,289 one-year-olds | — |
| 1993 | 5,225 one-year-olds | +21.8% |
| 1994 | 316.92 one-year-olds | -93.9% |
| 1995 | 211.4 one-year-olds | -33.3% |
| 1996 | 107.62 one-year-olds | -49.1% |
| 1997 | 55.27 one-year-olds | -48.6% |
| 1998 | 109.84 one-year-olds | +98.7% |
| 1999 | 160.53 one-year-olds | +46.1% |
| 2000 | 377.72 one-year-olds | +135.3% |
| 2001 | 382.55 one-year-olds | +1.3% |
| 2002 | 439.36 one-year-olds | +14.9% |
| 2003 | 541 one-year-olds | +23.1% |
| 2004 | 2,002 one-year-olds | +270.1% |
| 2005 | 2,565 one-year-olds | +28.1% |
| 2006 | 2,831 one-year-olds | +10.4% |
| 2007 | 2,209 one-year-olds | -22.0% |
| 2008 | 3,941 one-year-olds | +78.4% |
| 2009 | 2,287 one-year-olds | -42.0% |
| 2010 | 1,564 one-year-olds | -31.6% |
| 2011 | 1,438 one-year-olds | -8.1% |
| 2012 | 1,057 one-year-olds | -26.5% |
| 2013 | 886.8 one-year-olds | -16.1% |
| 2014 | 1,121 one-year-olds | +26.4% |
| 2015 | 1,179 one-year-olds | +5.1% |
| 2016 | 1,529 one-year-olds | +29.7% |
| 2017 | 1,926 one-year-olds | +26.0% |
| 2018 | 3,263 one-year-olds | +69.4% |
| 2019 | 1,890 one-year-olds | -42.1% |
| 2020 | 653.18 one-year-olds | -65.4% |
| 2021 | 876.15 one-year-olds | +34.1% |
| 2022 | 1,363 one-year-olds | +55.6% |
| 2023 | 938.4 one-year-olds | -31.2% |
Samoa compared with similar countries
- Samoa's 938.4 one-year-olds is below the median for upper middle income countries, which is 4,304 one-year-olds, 22% of the median. (58 countries reporting)
- Samoa's 938.4 one-year-olds is below the median for East Asia & Pacific, which is 4,252 one-year-olds, 22% of the median. (30 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 1,310 one-year-olds | 55.27 one-year-olds | 5,225 one-year-olds | 8 |
| 2000s | 1,758 one-year-olds | 377.72 one-year-olds | 3,941 one-year-olds | 10 |
| 2010s | 1,585 one-year-olds | 886.8 one-year-olds | 3,263 one-year-olds | 10 |
| 2020s | 957.73 one-year-olds | 653.18 one-year-olds | 1,363 one-year-olds | 4 |
Countries ranked near Samoa
More health data for Samoa
- Un projection of annual infant deaths, annual growth rate 0 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 1.71 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 708.7 deaths per 1,000 people (2090)
- Number of infants who die before age 1 17 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 1 (2025)
- Population ages 00-04, female, annual growth rate -2.45 % 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 0.0591 units per person (2025)
- Population ages 00-04, male, annual growth rate -2.5 % 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 hepatitis b in Samoa?
- Number of one-year-olds who are not vaccinated against hepatitis b in Samoa was 938.4 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 Samoa?
- The highest recorded value was 5,225 one-year-olds in 1993.
- What is the lowest number of one-year-olds who are not vaccinated against hepatitis b recorded in Samoa?
- The lowest recorded value was 55.27 one-year-olds in 1997.
- How does Samoa rank for number of one-year-olds who are not vaccinated against hepatitis b?
- Samoa ranks 149th 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 Samoa?
- Over the last ten years it is up 5.8%. The long-run trend across the full record is volatile.
- Where does this Samoa 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.