Pertussis - number of reported cases, annual growth rate in Liberia

Liberia: Pertussis - number of reported cases, annual growth rate was 189.31 % change on previous year in 2002. ◆ Volatile

Latest (2002)
189.31 % change on previous year
Change on year
up 454.6%
World rank
9th
of 191 countries
All-time high
527.42 % change on previous year
in 1981
All-time low
-99.85 % change on previous year
in 1989
Years of data
18
1975–2002

Pertussis - number of reported cases, annual growth rate in Liberia, 1975–2002

02004006001975198820021975: 202.3 % change on previous year1976: 428.5 % change on previous year1977: -13 % change on previous year1978: -46.7 % change on previous year1979: -92.2 % change on previous year1980: -38 % change on previous year1981: 527.4 % change on previous year1982: -87.7 % change on previous year1983: -68.8 % change on previous year1984: -46.7 % change on previous year1985: 300 % change on previous year1986: -53.1 % change on previous year1987: -66.7 % change on previous year1989: -99.8 % change on previous year1999: -64.6 % change on previous year2000: -28.7 % change on previous year2001: -53.4 % change on previous year2002: 189.3 % change on previous year

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

Analysis

In 2002, pertussis - number of reported cases, annual growth rate in Liberia stood at 189.31 % change on previous year.

The figure is up 454.6% on the previous year and up 289.6% over ten years.

Over the whole period, pertussis - number of reported cases, annual growth rate in Liberia peaked at 527.42 % change on previous year in 1981 and was at its lowest, -99.85 % change on previous year, in 1989.

Liberia ranks 9th of 191 countries on this measure, in the top 10%.

The series is highly variable year to year, so single readings are best treated with caution.

Pertussis - number of reported cases, annual growth rate in Liberia, year by year

Annual values for Pertussis - number of reported cases, annual growth rate in Liberia, 1975 to 2002.
Year % change on previous year Change
1975 202.31 % change on previous year
1976 428.49 % change on previous year +111.8%
1977 -12.99 % change on previous year -103.0%
1978 -46.74 % change on previous year +259.8%
1979 -92.19 % change on previous year +97.3%
1980 -38 % change on previous year -58.8%
1981 527.42 % change on previous year -1487.9%
1982 -87.66 % change on previous year -116.6%
1983 -68.75 % change on previous year -21.6%
1984 -46.67 % change on previous year -32.1%
1985 300 % change on previous year -742.9%
1986 -53.12 % change on previous year -117.7%
1987 -66.67 % change on previous year +25.5%
1989 -99.85 % change on previous year +49.8%
1999 -64.63 % change on previous year -35.3%
2000 -28.68 % change on previous year -55.6%
2001 -53.38 % change on previous year +86.1%
2002 189.31 % change on previous year -454.6%

Averages by decade

DecadeAverage LowestHighest Years
1970s 95.78 % change on previous year -92.19 % change on previous year 428.49 % change on previous year 5
1980s 40.74 % change on previous year -99.85 % change on previous year 527.42 % change on previous year 9
1990s -64.63 % change on previous year -64.63 % change on previous year -64.63 % change on previous year 1
2000s 35.75 % change on previous year -53.38 % change on previous year 189.31 % change on previous year 3

Countries ranked near Liberia

  1. 6 Bolivia, Plurinational State of 545.46 % change on previous year compare
  2. 7 Yemen 250 % change on previous year compare
  3. 8 Argentina 208.67 % change on previous year compare
  4. 10 Mauritania 173.37 % change on previous year compare
  5. 11 Uruguay 171.43 % change on previous year compare
  6. 12 Iran, Islamic Republic of 126.85 % change on previous year compare

See the full ranking of 204 places →

More health data for Liberia

All data for Liberia →

Frequently asked questions

What is pertussis - number of reported cases, annual growth rate in Liberia?
Pertussis - number of reported cases, annual growth rate in Liberia was 189.31 % change on previous year in 2002, according to Statizoid (derived).
What is the highest pertussis - number of reported cases, annual growth rate recorded in Liberia?
The highest recorded value was 527.42 % change on previous year in 1981.
What is the lowest pertussis - number of reported cases, annual growth rate recorded in Liberia?
The lowest recorded value was -99.85 % change on previous year in 1989.
How does Liberia rank for pertussis - number of reported cases, annual growth rate?
Liberia ranks 9th out of 191 countries with data for 2002.
Is pertussis - number of reported cases, annual growth rate rising or falling in Liberia?
Over the last ten years it is up 289.6%. The long-run trend across the full record is volatile.
Where does this Liberia data come from?
The figures come from Statizoid (derived), published as part of Pertussis - number of reported cases, annual growth rate. Statizoid updates them automatically from the source API.

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Pertussis - number of reported cases, annual growth rate in Liberia. Statizoid, drawing on Statizoid (derived). Retrieved 02 September 2026, from https://health.statizoid.com/stat/pertussis-number-of-reported-cases-annual-growth-rate/liberia/

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How this figure is calculated

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.

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
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.