Pertussis - number of reported cases, annual growth rate in Sri Lanka
Sri Lanka: Pertussis - number of reported cases, annual growth rate was -64.71 % change on previous year in 2025. ◆ Volatile
Pertussis - number of reported cases, annual growth rate in Sri Lanka, 1975–2025
Source: Statizoid (derived). Measured in % change on previous year.
Analysis
Sri Lanka recorded -64.71 % change on previous year for pertussis - number of reported cases, annual growth rate in 2025.
Compared with earlier readings it is down 135.6% over ten years.
Over the whole period, pertussis - number of reported cases, annual growth rate in Sri Lanka peaked at 593.94 % change on previous year in 1997 and was at its lowest, -100 % change on previous year, in 2005.
Sri Lanka ranks 63rd of 191 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.
Pertussis - number of reported cases, annual growth rate in Sri Lanka, year by year
| Year | % change on previous year | Change |
|---|---|---|
| 1975 | 155.43 % change on previous year | — |
| 1976 | -22.45 % change on previous year | -114.4% |
| 1977 | 3.65 % change on previous year | -116.3% |
| 1978 | -34.79 % change on previous year | -1052.1% |
| 1979 | 14.22 % change on previous year | -140.9% |
| 1980 | -32.5 % change on previous year | -328.5% |
| 1981 | -7.56 % change on previous year | -76.7% |
| 1982 | -40.92 % change on previous year | +440.9% |
| 1983 | -17.57 % change on previous year | -57.1% |
| 1984 | 12.3 % change on previous year | -170.0% |
| 1985 | 95.62 % change on previous year | +677.7% |
| 1986 | -70.71 % change on previous year | -173.9% |
| 1987 | -80.25 % change on previous year | +13.5% |
| 1988 | -19.35 % change on previous year | -75.9% |
| 1989 | 144 % change on previous year | -844.0% |
| 1990 | 344.26 % change on previous year | +139.1% |
| 1991 | -90.77 % change on previous year | -126.4% |
| 1992 | -76 % change on previous year | -16.3% |
| 1993 | 200 % change on previous year | -363.2% |
| 1994 | -72.22 % change on previous year | -136.1% |
| 1996 | -48.44 % change on previous year | -32.9% |
| 1997 | 593.94 % change on previous year | -1326.2% |
| 1998 | -41.05 % change on previous year | -106.9% |
| 1999 | -17.04 % change on previous year | -58.5% |
| 2000 | 73.21 % change on previous year | -529.7% |
| 2001 | -73.2 % change on previous year | -200.0% |
| 2002 | -69.23 % change on previous year | -5.4% |
| 2003 | 412.5 % change on previous year | -695.8% |
| 2004 | -45.12 % change on previous year | -110.9% |
| 2005 | -100 % change on previous year | +121.6% |
| 2009 | 244.44 % change on previous year | -344.4% |
| 2010 | -93.55 % change on previous year | -138.3% |
| 2012 | 165.22 % change on previous year | -276.6% |
| 2013 | 9.84 % change on previous year | -94.0% |
| 2014 | -43.28 % change on previous year | -540.0% |
| 2015 | 181.58 % change on previous year | -519.5% |
| 2016 | -49.53 % change on previous year | -127.3% |
| 2017 | -100 % change on previous year | +101.9% |
| 2019 | -58.33 % change on previous year | -41.7% |
| 2020 | -80 % change on previous year | +37.1% |
| 2021 | -100 % change on previous year | +25.0% |
| 2025 | -64.71 % change on previous year | -35.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 23.22 % change on previous year | -34.79 % change on previous year | 155.43 % change on previous year | 5 |
| 1980s | -1.7 % change on previous year | -80.25 % change on previous year | 144 % change on previous year | 10 |
| 1990s | 88.08 % change on previous year | -90.77 % change on previous year | 593.94 % change on previous year | 9 |
| 2000s | 63.23 % change on previous year | -100 % change on previous year | 412.5 % change on previous year | 7 |
| 2010s | 1.49 % change on previous year | -100 % change on previous year | 181.58 % change on previous year | 8 |
| 2020s | -81.57 % change on previous year | -100 % change on previous year | -64.71 % change on previous year | 3 |
Countries ranked near Sri Lanka
- 60 Norway -61.08 % change on previous year compare
- 61 Samoa -64.45 % change on previous year compare
- 62 Brazil -64.56 % change on previous year compare
- 64 Poland -65.48 % change on previous year compare
- 65 Sweden -69.27 % change on previous year compare
- 66 South Africa -70.52 % change on previous year compare
More health data for Sri Lanka
- Un projection of annual infant deaths, annual growth rate -1.62 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.7332 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,250 deaths per 1,000 people (2090)
- Number of infants who die before age 1 304 deaths (2100)
- Population ages 65-69, male, annual growth rate 1.07 % change on previous year (2025)
- Population ages 65-69, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 65-69, male, per capita 0.0197 units per person (2025)
- Population ages 70-74, female, annual growth rate 0.7895 % change on previous year (2025)
- Population ages 70-74, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 70-74, female, per capita 0.0202 units per person (2025)
Frequently asked questions
- What is pertussis - number of reported cases, annual growth rate in Sri Lanka?
- Pertussis - number of reported cases, annual growth rate in Sri Lanka was -64.71 % change on previous year in 2025, according to Statizoid (derived).
- What is the highest pertussis - number of reported cases, annual growth rate recorded in Sri Lanka?
- The highest recorded value was 593.94 % change on previous year in 1997.
- What is the lowest pertussis - number of reported cases, annual growth rate recorded in Sri Lanka?
- The lowest recorded value was -100 % change on previous year in 2005.
- How does Sri Lanka rank for pertussis - number of reported cases, annual growth rate?
- Sri Lanka ranks 63rd out of 191 countries with data for 2025.
- Is pertussis - number of reported cases, annual growth rate rising or falling in Sri Lanka?
- Over the last ten years it is down 135.6%. The long-run trend across the full record is volatile.
- Where does this Sri Lanka 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.
Download this data
CSV · JSON — 42 observations, free to reuse under Derived by Statizoid from the sources named on the page.
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
- Pertussis - number of reported cases World Health Organization, Global Health Observatory
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
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.