Iran, Islamic Republic of vs Liberia: Pertussis - number of reported cases, annual growth rate

Iran, Islamic Republic of
126.85 % change on previous year
in 2025
Liberia
189.31 % change on previous year
in 2002
Iran, Islamic Republic of rank
12th
Liberia rank
9th

Pertussis - number of reported cases, annual growth rate over time

  • Iran, Islamic Republic of
  • Liberia
0200400600800197520002025

How they compare

Liberia currently reports 189.31 % change on previous year against 126.85 % change on previous year in Iran, Islamic Republic of, a difference of 62.46 % change on previous year.

That makes Liberia's figure about 1.5 times Iran, Islamic Republic of's.

The two have swapped places 6 times across 17 shared years of data; in 1975 it was Liberia ahead.

Iran, Islamic Republic of ranks 12th and Liberia ranks 9th of 191 countries.

Across the 4 decades both report, Iran, Islamic Republic of averaged higher in 2 and Liberia in 2.

Head to head by decade

Decade Iran, Islamic Republic of Liberia Difference Ahead
1970s 104.33 % change on previous year 122.97 % change on previous year 18.64 % change on previous year Liberia
1980s -4.81 % change on previous year 40.74 % change on previous year 45.56 % change on previous year Liberia
1990s 20 % change on previous year -64.63 % change on previous year 84.63 % change on previous year Iran, Islamic Republic of
2000s 76.52 % change on previous year 35.75 % change on previous year 40.77 % change on previous year Iran, Islamic Republic of

Averages of every year both report within each decade.

Frequently asked questions

Which has higher pertussis - number of reported cases, annual growth rate, Iran, Islamic Republic of or Liberia?
Liberia, at 189.31 % change on previous year against 126.85 % change on previous year in Iran, Islamic Republic of as of 2002.
What is the difference in pertussis - number of reported cases, annual growth rate between Iran, Islamic Republic of and Liberia?
62.46 % change on previous year, with Liberia ahead.
How many years of comparable data are there for Iran, Islamic Republic of and Liberia?
17 years are reported by both, from 1975 to 2002.
How do Iran, Islamic Republic of and Liberia rank globally for pertussis - number of reported cases, annual growth rate?
Iran, Islamic Republic of ranks 12th and Liberia ranks 9th of 191 countries.
Where does this data come from?
Statizoid (derived), published as Pertussis - number of reported cases, annual growth rate. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Iran, Islamic Republic of vs Liberia: Pertussis - number of reported cases, annual growth rate. Statizoid, drawing on Statizoid (derived). Retrieved 10 September 2026, from https://health.statizoid.com/compare/pertussis-number-of-reported-cases-annual-growth-rate/iran-islamic-rep/liberia/

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About this data

Indicator
Pertussis - 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
204 places, 6,283 data points, 1975–2025
Last refreshed

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