Statizoid

Diphtheria - number of reported cases, annual growth rate in Iran, Islamic Republic of

Iran, Islamic Republic of: Diphtheria - number of reported cases, annual growth rate was -100 % change on previous year in 2018. ◆ Volatile

Latest (2018)
-100 % change on previous year
Change on year
down 25.0%
World rank
51st
of 140 countries
All-time high
196.3 % change on previous year
in 1987
All-time low
-100 % change on previous year
in 2018
Years of data
43
1975–2018

Diphtheria - number of reported cases, annual growth rate in Iran, Islamic Republic of, 1975–2018

-10001002001975199620181975: 88.8 % change on previous year1976: -75.4 % change on previous year1977: -30.8 % change on previous year1979: -94.9 % change on previous year1980: -6.1 % change on previous year1981: 171.2 % change on previous year1982: -21.8 % change on previous year1983: -46.8 % change on previous year1984: -18.5 % change on previous year1985: 11.7 % change on previous year1986: 13.3 % change on previous year1987: 196.3 % change on previous year1988: -40 % change on previous year1989: -8.7 % change on previous year1990: 41.8 % change on previous year1991: -10.2 % change on previous year1992: -73.1 % change on previous year1993: -64.4 % change on previous year1994: -56.2 % change on previous year1995: -35.7 % change on previous year1996: 44.4 % change on previous year1997: 130.8 % change on previous year1998: -56.7 % change on previous year1999: 0 % change on previous year2000: 38.5 % change on previous year2001: -16.7 % change on previous year2002: -33.3 % change on previous year2003: 140 % change on previous year2004: -75 % change on previous year2005: 150 % change on previous year2006: 73.3 % change on previous year2007: 23.1 % change on previous year2008: 62.5 % change on previous year2009: 11.5 % change on previous year2010: 82.8 % change on previous year2011: 24.5 % change on previous year2012: 13.6 % change on previous year2013: 26.7 % change on previous year2014: -93.2 % change on previous year2015: 115.4 % change on previous year2016: -64.3 % change on previous year2017: -80 % change on previous year2018: -100 % change on previous year

Source: Statizoid (derived). Measured in % change on previous year.

Analysis

Iran, Islamic Republic of recorded -100 % change on previous year for diphtheria - number of reported cases, annual growth rate in 2018. That is the lowest value across all 43 years on record.

The figure is down 25.0% on the previous year and down 260.0% over ten years.

Over the whole period, diphtheria - number of reported cases, annual growth rate in Iran, Islamic Republic of peaked at 196.3 % change on previous year in 1987 and was at its lowest, -100 % change on previous year, in 2018.

That places Iran, Islamic Republic of 51st out of 140 countries with data for 2018, putting it 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, annual growth rate in Iran, Islamic Republic of, year by year

Year % change on previous year Change
1975 88.83 % change on previous year —
1976 -75.39 % change on previous year -184.9%
1977 -30.81 % change on previous year -59.1%
1979 -94.94 % change on previous year +208.1%
1980 -6.08 % change on previous year -93.6%
1981 171.22 % change on previous year -2915.7%
1982 -21.75 % change on previous year -112.7%
1983 -46.78 % change on previous year +115.1%
1984 -18.47 % change on previous year -60.5%
1985 11.72 % change on previous year -163.4%
1986 13.29 % change on previous year +13.4%
1987 196.3 % change on previous year +1377.4%
1988 -40 % change on previous year -120.4%
1989 -8.68 % change on previous year -78.3%
1990 41.83 % change on previous year -581.8%
1991 -10.19 % change on previous year -124.4%
1992 -73.13 % change on previous year +617.9%
1993 -64.44 % change on previous year -11.9%
1994 -56.25 % change on previous year -12.7%
1995 -35.71 % change on previous year -36.5%
1996 44.44 % change on previous year -224.4%
1997 130.77 % change on previous year +194.2%
1998 -56.67 % change on previous year -143.3%
1999 0 % change on previous year -100.0%
2000 38.46 % change on previous year —
2001 -16.67 % change on previous year -143.3%
2002 -33.33 % change on previous year +100.0%
2003 140 % change on previous year -520.0%
2004 -75 % change on previous year -153.6%
2005 150 % change on previous year -300.0%
2006 73.33 % change on previous year -51.1%
2007 23.08 % change on previous year -68.5%
2008 62.5 % change on previous year +170.8%
2009 11.54 % change on previous year -81.5%
2010 82.76 % change on previous year +617.2%
2011 24.53 % change on previous year -70.4%
2012 13.64 % change on previous year -44.4%
2013 26.67 % change on previous year +95.6%
2014 -93.16 % change on previous year -449.3%
2015 115.39 % change on previous year -223.9%
2016 -64.29 % change on previous year -155.7%
2017 -80 % change on previous year +24.4%
2018 -100 % change on previous year +25.0%

Averages by decade

DecadeAverage LowestHighest Years
1970s -28.07 % change on previous year -94.94 % change on previous year 88.83 % change on previous year 4
1980s 25.08 % change on previous year -46.78 % change on previous year 196.3 % change on previous year 10
1990s -7.94 % change on previous year -73.13 % change on previous year 130.77 % change on previous year 10
2000s 37.39 % change on previous year -75 % change on previous year 150 % change on previous year 10
2010s -8.27 % change on previous year -100 % change on previous year 115.39 % change on previous year 9

Countries ranked near Iran, Islamic Republic of

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  26. 51 Dominican Republic -100 % change on previous year compare
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  28. 51 Egypt -100 % change on previous year compare
  29. 51 Eritrea -100 % change on previous year compare
  30. 51 Estonia -100 % change on previous year compare
  31. 51 Finland -100 % change on previous year compare
  32. 51 Georgia -100 % change on previous year compare
  33. 51 Ghana -100 % change on previous year compare
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See the full ranking of 152 places →

More health data for Iran, Islamic Republic of

All data for Iran, Islamic Republic of →

Frequently asked questions

What is diphtheria - number of reported cases, annual growth rate in Iran, Islamic Republic of?
Diphtheria - number of reported cases, annual growth rate in Iran, Islamic Republic of was -100 % change on previous year in 2018, according to Statizoid (derived).
What is the highest diphtheria - number of reported cases, annual growth rate recorded in Iran, Islamic Republic of?
The highest recorded value was 196.3 % change on previous year in 1987.
What is the lowest diphtheria - number of reported cases, annual growth rate recorded in Iran, Islamic Republic of?
The lowest recorded value was -100 % change on previous year in 2018.
How does Iran, Islamic Republic of rank for diphtheria - number of reported cases, annual growth rate?
Iran, Islamic Republic of ranks 51st out of 140 countries with data for 2018.
Is diphtheria - number of reported cases, annual growth rate rising or falling in Iran, Islamic Republic of?
Over the last ten years it is down 260.0%. The long-run trend across the full record is volatile.
Where does this Iran, Islamic Republic of data come from?
The figures come from Statizoid (derived), published as part of Diphtheria - number of reported cases, annual growth rate. Statizoid updates them automatically from the source API.

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Diphtheria - number of reported cases, annual growth rate in Iran, Islamic Republic of. Statizoid, drawing on Statizoid (derived). Retrieved 02 September 2026, from https://health.statizoid.com/stat/diphtheria-number-of-reported-cases-annual-growth-rate/iran-islamic-rep/

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How this figure is calculated

The year-on-year percentage change in Diphtheria - number of reported cases. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.

Computed from

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

Indicator
Diphtheria - number of reported cases, annual growth rate
Unit
% change on previous year
Source
Statizoid (derived)
Licence
Derived by Statizoid from the sources named on the page
Coverage
152 places, 3,361 data points, 1975–2025
Last refreshed

The year-on-year percentage change in Diphtheria - number of reported cases. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.