Pertussis - number of reported cases, gaps filled in Sri Lanka
Sri Lanka: Pertussis - number of reported cases, gaps filled was 18 in 2025. ◆ Volatile
Pertussis - number of reported cases, gaps filled in Sri Lanka, 1974–2025
Source: Statizoid (derived).
Analysis
In 2025, pertussis - number of reported cases, gaps filled in Sri Lanka stood at 18.
Compared with earlier readings it is down 64.7% on the previous year and down 83.2% over ten years.
Over the whole period, pertussis - number of reported cases, gaps filled in Sri Lanka peaked at 1,341 in 1975 and was at its lowest, 0, in 2005.
Sri Lanka ranks 101st 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.
Pertussis - number of reported cases, gaps filled in Sri Lanka, year by year
| Year | Value | Change |
|---|---|---|
| 1974 | 525 | — |
| 1975 | 1,341 | +155.4% |
| 1976 | 1,040 | -22.4% |
| 1977 | 1,078 | +3.7% |
| 1978 | 703 | -34.8% |
| 1979 | 803 | +14.2% |
| 1980 | 542 | -32.5% |
| 1981 | 501 | -7.6% |
| 1982 | 296 | -40.9% |
| 1983 | 244 | -17.6% |
| 1984 | 274 | +12.3% |
| 1985 | 536 | +95.6% |
| 1986 | 157 | -70.7% |
| 1987 | 31 | -80.3% |
| 1988 | 25 | -19.4% |
| 1989 | 61 | +144.0% |
| 1990 | 271 | +344.3% |
| 1991 | 25 | -90.8% |
| 1992 | 6 | -76.0% |
| 1993 | 18 | +200.0% |
| 1994 | 5 | -72.2% |
| 1995 | 64 | +1180.0% |
| 1996 | 33 | -48.4% |
| 1997 | 229 | +593.9% |
| 1998 | 135 | -41.0% |
| 1999 | 112 | -17.0% |
| 2000 | 194 | +73.2% |
| 2001 | 52 | -73.2% |
| 2002 | 16 | -69.2% |
| 2003 | 82 | +412.5% |
| 2004 | 45 | -45.1% |
| 2005 | 0 | -100.0% |
| 2006 | 0 | — |
| 2007 | 0 | — |
| 2008 | 9 | — |
| 2009 | 31 | +244.4% |
| 2010 | 2 | -93.5% |
| 2011 | 23 | +1050.0% |
| 2012 | 61 | +165.2% |
| 2013 | 67 | +9.8% |
| 2014 | 38 | -43.3% |
| 2015 | 107 | +181.6% |
| 2016 | 54 | -49.5% |
| 2017 | 0 | -100.0% |
| 2018 | 12 | — |
| 2019 | 5 | -58.3% |
| 2020 | 1 | -80.0% |
| 2021 | 0 | -100.0% |
| 2022 | 0 | — |
| 2023 | 3 | — |
| 2024 | 51 | +1600.0% |
| 2025 | 18 | -64.7% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 915 | 525 | 1,341 | 6 |
| 1980s | 266.7 | 25 | 542 | 10 |
| 1990s | 89.8 | 5 | 271 | 10 |
| 2000s | 42.9 | 0 | 194 | 10 |
| 2010s | 36.9 | 0 | 107 | 10 |
| 2020s | 12.17 | 0 | 51 | 6 |
Countries ranked near Sri Lanka
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 80 and above, female, per capita 0.0133 units per person (2025)
- Population ages 80 and above, male, annual growth rate 4.83 % change on previous year (2025)
- Population ages 80 and above, male, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 80 and above, male, per capita 0.0072 units per person (2025)
- Pertussis - number of reported cases, per capita 0 units per person (2025)
- Total tetanus - number of reported cases, gaps filled 6 (2025)
Frequently asked questions
- What is pertussis - number of reported cases, gaps filled in Sri Lanka?
- Pertussis - number of reported cases, gaps filled in Sri Lanka was 18 in 2025, according to Statizoid (derived).
- What is the highest pertussis - number of reported cases, gaps filled recorded in Sri Lanka?
- The highest recorded value was 1,341 in 1975.
- What is the lowest pertussis - number of reported cases, gaps filled recorded in Sri Lanka?
- The lowest recorded value was 0 in 2005.
- How does Sri Lanka rank for pertussis - number of reported cases, gaps filled?
- Sri Lanka ranks 101st out of 210 countries with data for 2025.
- Is pertussis - number of reported cases, gaps filled rising or falling in Sri Lanka?
- Over the last ten years it is down 83.2%. 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, gaps filled. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 52 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
Pertussis - number of reported cases with 623 missing years estimated by linear interpolation between the nearest real observations. Only gaps of 4 years or fewer are filled, and never beyond the first or last actual measurement — these are filled holes, not forecasts.
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
Pertussis - number of reported cases with 623 missing years estimated by linear interpolation between the nearest real observations. Only gaps of 4 years or fewer are filled, and never beyond the first or last actual measurement — these are filled holes, not forecasts.