Number of one-year-olds who are not vaccinated against diphtheria in Samoa
Samoa: Number of one-year-olds who are not vaccinated against diphtheria was 0.0043 one-year-olds per person in 2023. ◆ Volatile
Number of one-year-olds who are not vaccinated against diphtheria in Samoa, 1980–2023
Source: Statizoid (derived). Measured in one-year-olds per person.
Analysis
The most recent figure for number of one-year-olds who are not vaccinated against diphtheria in Samoa is 0.0043 one-year-olds per person, measured in 2023.
Compared with earlier readings it is down 31.6% on the previous year and down 9.2% over ten years.
Over the whole period, number of one-year-olds who are not vaccinated against diphtheria in Samoa peaked at 0.0226 one-year-olds per person in 1980 and was at its lowest, 0.0003 one-year-olds per person, in 1998.
That places Samoa 49th out of 192 countries with data for 2023, putting it 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 Samoa, year by year
| Year | one-year-olds per person | Change |
|---|---|---|
| 1980 | 0.0226 one-year-olds per person | — |
| 1981 | 0.0108 one-year-olds per person | -52.4% |
| 1982 | 0.0041 one-year-olds per person | -61.9% |
| 1983 | 0.0035 one-year-olds per person | -15.7% |
| 1984 | 0.0013 one-year-olds per person | -63.6% |
| 1985 | 0.0035 one-year-olds per person | +176.8% |
| 1986 | 0.0019 one-year-olds per person | -44.3% |
| 1987 | 0.0023 one-year-olds per person | +17.9% |
| 1988 | 0.0032 one-year-olds per person | +39.8% |
| 1989 | 0.0106 one-year-olds per person | +229.5% |
| 1990 | 0.0031 one-year-olds per person | -71.0% |
| 1991 | 0.0064 one-year-olds per person | +110.2% |
| 1992 | 0.0028 one-year-olds per person | -57.0% |
| 1993 | 0.0025 one-year-olds per person | -11.1% |
| 1994 | 0.0021 one-year-olds per person | -13.1% |
| 1995 | 0.0018 one-year-olds per person | -14.9% |
| 1996 | 0.0015 one-year-olds per person | -15.9% |
| 1997 | 0.0012 one-year-olds per person | -18.5% |
| 1998 | 0.0003 one-year-olds per person | -75.3% |
| 1999 | 0.0009 one-year-olds per person | +190.1% |
| 2000 | 0.0006 one-year-olds per person | -33.3% |
| 2001 | 0.003 one-year-olds per person | +402.3% |
| 2002 | 0.0024 one-year-olds per person | -20.2% |
| 2003 | 0.0029 one-year-olds per person | +22.5% |
| 2004 | 0.0105 one-year-olds per person | +258.8% |
| 2005 | 0.0115 one-year-olds per person | +9.7% |
| 2006 | 0.014 one-year-olds per person | +21.6% |
| 2007 | 0.0098 one-year-olds per person | -30.1% |
| 2008 | 0.0171 one-year-olds per person | +75.2% |
| 2009 | 0.0102 one-year-olds per person | -40.1% |
| 2010 | 0.0064 one-year-olds per person | -37.8% |
| 2011 | 0.0053 one-year-olds per person | -16.5% |
| 2012 | 0.0054 one-year-olds per person | +1.2% |
| 2013 | 0.0048 one-year-olds per person | -11.3% |
| 2014 | 0.0065 one-year-olds per person | +36.0% |
| 2015 | 0.0058 one-year-olds per person | -10.0% |
| 2016 | 0.0075 one-year-olds per person | +28.6% |
| 2017 | 0.0094 one-year-olds per person | +24.8% |
| 2018 | 0.0157 one-year-olds per person | +67.6% |
| 2019 | 0.009 one-year-olds per person | -42.7% |
| 2020 | 0.0031 one-year-olds per person | -65.8% |
| 2021 | 0.0041 one-year-olds per person | +33.0% |
| 2022 | 0.0063 one-year-olds per person | +54.5% |
| 2023 | 0.0043 one-year-olds per person | -31.6% |
Samoa compared with similar countries
- Samoa's 0.0043 one-year-olds per person is above the median for upper middle income countries, which is 0.0015 one-year-olds per person, 2.9× the median. (58 countries reporting)
- Samoa's 0.0043 one-year-olds per person is above the median for East Asia & Pacific, which is 0.0013 one-year-olds per person, 3.2× the median. (30 countries reporting)
Biggest year-on-year movements
Years where Number of one-year-olds who are not vaccinated against diphtheria in Samoa 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 |
|---|---|---|---|
| 2001 | +402.3% | 0.0006 one-year-olds per person | 0.003 one-year-olds per person |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.0064 one-year-olds per person | 0.0013 one-year-olds per person | 0.0226 one-year-olds per person | 10 |
| 1990s | 0.0023 one-year-olds per person | 0.0003 one-year-olds per person | 0.0064 one-year-olds per person | 10 |
| 2000s | 0.0082 one-year-olds per person | 0.0006 one-year-olds per person | 0.0171 one-year-olds per person | 10 |
| 2010s | 0.0076 one-year-olds per person | 0.0048 one-year-olds per person | 0.0157 one-year-olds per person | 10 |
| 2020s | 0.0045 one-year-olds per person | 0.0031 one-year-olds per person | 0.0063 one-year-olds per person | 4 |
Countries ranked near Samoa
- 46 Panama 0.0046 one-year-olds per person compare
- 47 Ecuador 0.0046 one-year-olds per person compare
- 48 Micronesia, Federated States of 0.0046 one-year-olds per person compare
- 50 Solomon Islands 0.0042 one-year-olds per person compare
- 51 South Africa 0.004 one-year-olds per person compare
- 52 Argentina 0.0038 one-year-olds per person compare
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 diphtheria in Samoa?
- Number of one-year-olds who are not vaccinated against diphtheria in Samoa was 0.0043 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 Samoa?
- The highest recorded value was 0.0226 one-year-olds per person in 1980.
- What is the lowest number of one-year-olds who are not vaccinated against diphtheria recorded in Samoa?
- The lowest recorded value was 0.0003 one-year-olds per person in 1998.
- How does Samoa rank for number of one-year-olds who are not vaccinated against diphtheria?
- Samoa ranks 49th out of 192 countries with data for 2023.
- Is number of one-year-olds who are not vaccinated against diphtheria rising or falling in Samoa?
- Over the last ten years it is down 9.2%. The long-run trend across the full record is volatile.
- Where does this Samoa 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.