Diphtheria - number of reported cases in Iran
Iran: Diphtheria - number of reported cases was 0 in 2025. ◆ Volatile
Latest (2025)
0
World rank
60th
of 210 countries
All-time high
2,922
in 1978
All-time low
0
in 2018
Years of data
52
1974–2025
Diphtheria - number of reported cases in Iran, 1974–2025
Source: World Health Organization, Global Health Observatory.
Analysis
In 2025, diphtheria - number of reported cases in Iran stood at 0. That is the lowest value across all 52 years on record.
That represents a change of down 100.0% over ten years.
Over the whole period, diphtheria - number of reported cases in Iran peaked at 2,922 in 1978 and was at its lowest, 0, in 2018.
Iran ranks 60th of 210 countries on this measure, in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Diphtheria - number of reported cases in Iran, year by year
| Year | Value | Change |
|---|---|---|
| 1974 | 824 | — |
| 1975 | 1,556 | +88.8% |
| 1976 | 383 | -75.4% |
| 1977 | 265 | -30.8% |
| 1978 | 2,922 | +1002.6% |
| 1979 | 148 | -94.9% |
| 1980 | 139 | -6.1% |
| 1981 | 377 | +171.2% |
| 1982 | 295 | -21.8% |
| 1983 | 157 | -46.8% |
| 1984 | 128 | -18.5% |
| 1985 | 143 | +11.7% |
| 1986 | 162 | +13.3% |
| 1987 | 480 | +196.3% |
| 1988 | 288 | -40.0% |
| 1989 | 263 | -8.7% |
| 1990 | 373 | +41.8% |
| 1991 | 335 | -10.2% |
| 1992 | 90 | -73.1% |
| 1993 | 32 | -64.4% |
| 1994 | 14 | -56.2% |
| 1995 | 9 | -35.7% |
| 1996 | 13 | +44.4% |
| 1997 | 30 | +130.8% |
| 1998 | 13 | -56.7% |
| 1999 | 13 | +0.0% |
| 2000 | 18 | +38.5% |
| 2001 | 15 | -16.7% |
| 2002 | 10 | -33.3% |
| 2003 | 24 | +140.0% |
| 2004 | 6 | -75.0% |
| 2005 | 15 | +150.0% |
| 2006 | 26 | +73.3% |
| 2007 | 32 | +23.1% |
| 2008 | 52 | +62.5% |
| 2009 | 58 | +11.5% |
| 2010 | 106 | +82.8% |
| 2011 | 132 | +24.5% |
| 2012 | 150 | +13.6% |
| 2013 | 190 | +26.7% |
| 2014 | 13 | -93.2% |
| 2015 | 28 | +115.4% |
| 2016 | 10 | -64.3% |
| 2017 | 2 | -80.0% |
| 2018 | 0 | -100.0% |
| 2019 | 0 | — |
| 2020 | 0 | — |
| 2021 | 0 | — |
| 2022 | 0 | — |
| 2023 | 0 | — |
| 2024 | 0 | — |
| 2025 | 0 | — |
Biggest year-on-year movements
Years where Diphtheria - number of reported cases in Iran 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 |
|---|---|---|---|
| 1978 | +1002.6% | 265 | 2,922 |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 1,016 | 148 | 2,922 | 6 |
| 1980s | 243.2 | 128 | 480 | 10 |
| 1990s | 92.2 | 9 | 373 | 10 |
| 2000s | 25.6 | 6 | 58 | 10 |
| 2010s | 63.1 | 0 | 190 | 10 |
| 2020s | 0 | 0 | 0 | 6 |
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More health data for Iran
- Un projection of annual infant deaths, annual growth rate -1.38 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate -0.5627 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,361 deaths per 1,000 people (2090)
- Number of infants who die before age 1 1,070 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 0 (2025)
- Population ages 00-04, female, annual growth rate -1.88 % 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 0.0311 units per person (2025)
- Population ages 00-04, male, annual growth rate -1.95 % 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 diphtheria - number of reported cases in Iran?
- Diphtheria - number of reported cases in Iran was 0 in 2025, according to World Health Organization, Global Health Observatory.
- What is the highest diphtheria - number of reported cases recorded in Iran?
- The highest recorded value was 2,922 in 1978.
- What is the lowest diphtheria - number of reported cases recorded in Iran?
- The lowest recorded value was 0 in 2018.
- How does Iran rank for diphtheria - number of reported cases?
- Iran ranks 60th out of 210 countries with data for 2025.
- Is diphtheria - number of reported cases rising or falling in Iran?
- Over the last ten years it is down 100.0%. The long-run trend across the full record is volatile.
- Where does this Iran data come from?
- The figures come from World Health Organization, Global Health Observatory, published as part of Diphtheria - number of reported cases. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 52 observations, free to reuse under CC BY-NC-SA 3.0 IGO (WHO).