Pertussis - number of reported cases, annual growth rate in Western Pacific (WHO region)
Western Pacific (WHO region): Pertussis - number of reported cases, annual growth rate was -73.21 % change on previous year in 2025. ◆ Volatile
Pertussis - number of reported cases, annual growth rate in Western Pacific (WHO region), 1981–2025
Source: Statizoid (derived). Measured in % change on previous year.
Analysis
In 2025, pertussis - number of reported cases, annual growth rate in Western Pacific (WHO region) stood at -73.21 % change on previous year.
That represents a change of down 388.0% on the previous year and down 215.2% over ten years.
Over the whole period, pertussis - number of reported cases, annual growth rate in Western Pacific (WHO region) peaked at 280.54 % change on previous year in 2008 and was at its lowest, -81.74 % change on previous year, in 2020.
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 Western Pacific (WHO region), year by year
| Year | % change on previous year | Change |
|---|---|---|
| 1981 | -19.58 % change on previous year | — |
| 1982 | -15.23 % change on previous year | -22.2% |
| 1983 | -20.91 % change on previous year | +37.3% |
| 1984 | -30.56 % change on previous year | +46.2% |
| 1985 | -23.84 % change on previous year | -22.0% |
| 1986 | -34.64 % change on previous year | +45.3% |
| 1987 | -31.86 % change on previous year | -8.0% |
| 1988 | -9.33 % change on previous year | -70.7% |
| 1989 | -1.01 % change on previous year | -89.2% |
| 1990 | -33.19 % change on previous year | +3185.9% |
| 1991 | -38.66 % change on previous year | +16.5% |
| 1992 | 1.51 % change on previous year | -103.9% |
| 1993 | -20.43 % change on previous year | -1451.0% |
| 1994 | -1.85 % change on previous year | -90.9% |
| 1995 | -25.36 % change on previous year | +1268.5% |
| 1996 | -28.47 % change on previous year | +12.2% |
| 1997 | 92.89 % change on previous year | -426.3% |
| 1998 | -51.73 % change on previous year | -155.7% |
| 1999 | 14.86 % change on previous year | -128.7% |
| 2000 | 39.43 % change on previous year | +165.4% |
| 2001 | 30.61 % change on previous year | -22.4% |
| 2002 | -1.24 % change on previous year | -104.1% |
| 2003 | -52.09 % change on previous year | +4098.5% |
| 2004 | 44.18 % change on previous year | -184.8% |
| 2005 | 34.45 % change on previous year | -22.0% |
| 2006 | -58.89 % change on previous year | -271.0% |
| 2007 | -47.01 % change on previous year | -20.2% |
| 2008 | 280.54 % change on previous year | -696.7% |
| 2009 | 64.95 % change on previous year | -76.8% |
| 2010 | 14.01 % change on previous year | -78.4% |
| 2011 | 13.8 % change on previous year | -1.5% |
| 2012 | -19.98 % change on previous year | -244.7% |
| 2013 | -40.64 % change on previous year | +103.4% |
| 2014 | -17.53 % change on previous year | -56.9% |
| 2015 | 63.57 % change on previous year | -462.6% |
| 2016 | -9.56 % change on previous year | -115.0% |
| 2017 | -8.45 % change on previous year | -11.6% |
| 2018 | 86.14 % change on previous year | -1119.8% |
| 2019 | 19.02 % change on previous year | -77.9% |
| 2020 | -81.74 % change on previous year | -529.8% |
| 2021 | -3.96 % change on previous year | -95.2% |
| 2022 | 253.61 % change on previous year | -6508.7% |
| 2023 | 25.42 % change on previous year | -90.0% |
| 2025 | -73.21 % change on previous year | -388.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | -20.77 % change on previous year | -34.64 % change on previous year | -1.01 % change on previous year | 9 |
| 1990s | -9.04 % change on previous year | -51.73 % change on previous year | 92.89 % change on previous year | 10 |
| 2000s | 33.49 % change on previous year | -58.89 % change on previous year | 280.54 % change on previous year | 10 |
| 2010s | 10.04 % change on previous year | -40.64 % change on previous year | 86.14 % change on previous year | 10 |
| 2020s | 24.02 % change on previous year | -81.74 % change on previous year | 253.61 % change on previous year | 5 |
Countries ranked near Western Pacific (WHO region)
- 6 Bolivia, Plurinational State of 545.46 % change on previous year compare
- 7 Yemen 250 % change on previous year compare
- 8 Argentina 208.67 % change on previous year compare
- 9 Liberia 189.31 % change on previous year compare
- 10 Mauritania 173.37 % change on previous year compare
- 11 Uruguay 171.43 % change on previous year compare
- 12 Iran, Islamic Republic of 126.85 % change on previous year compare
More health data for Western Pacific (WHO region)
- Measles - number of reported cases, gaps filled 78,782 (2025)
- Total tetanus - number of reported cases, gaps filled 5,464 (2025)
- Diphtheria - number of reported cases, gaps filled 428 (2025)
- Pertussis - number of reported cases, gaps filled 159,013 (2025)
- Measles - number of reported cases, annual growth rate 228.55 % change on previous year (2025)
- Total tetanus - number of reported cases, annual growth rate 10.81 % change on previous year (2025)
- Pertussis - number of reported cases 159,013 (2025)
- Total tetanus - number of reported cases 5,464 (2025)
- Measles - number of reported cases 78,782 (2025)
- Diphtheria - number of reported cases 428 (2025)
Frequently asked questions
- What is pertussis - number of reported cases, annual growth rate in Western Pacific (WHO region)?
- Pertussis - number of reported cases, annual growth rate in Western Pacific (WHO region) was -73.21 % change on previous year in 2025, according to Statizoid (derived).
- What is the highest pertussis - number of reported cases, annual growth rate recorded in Western Pacific (WHO region)?
- The highest recorded value was 280.54 % change on previous year in 2008.
- What is the lowest pertussis - number of reported cases, annual growth rate recorded in Western Pacific (WHO region)?
- The lowest recorded value was -81.74 % change on previous year in 2020.
- How does Western Pacific (WHO region) rank for pertussis - number of reported cases, annual growth rate?
- Western Pacific (WHO region) ranks 9th out of 11 groups with data for 2025.
- Is pertussis - number of reported cases, annual growth rate rising or falling in Western Pacific (WHO region)?
- Over the last ten years it is down 215.2%. The long-run trend across the full record is volatile.
- Where does this Western Pacific (WHO region) 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 — 44 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.