Diphtheria - number of reported cases, annual growth rate in Western Pacific (WHO region)
Western Pacific (WHO region): Diphtheria - number of reported cases, annual growth rate was -64.6 % change on previous year in 2025. ◆ Volatile
Diphtheria - number of reported cases, annual growth rate in Western Pacific (WHO region), 1981–2025
Source: Statizoid (derived). Measured in % change on previous year.
Analysis
Western Pacific (WHO region) recorded -64.6 % change on previous year for diphtheria - number of reported cases, annual growth rate in 2025.
The figure is down 579.6% on the previous year and down 29.2% over ten years.
Over the whole period, diphtheria - number of reported cases, annual growth rate in Western Pacific (WHO region) peaked at 343.62 % change on previous year in 1997 and was at its lowest, -79.47 % change on previous year, in 1998.
The series is highly variable year to year, so single readings are best treated with caution.
Diphtheria - number of reported cases, annual growth rate in Western Pacific (WHO region), year by year
| Year | % change on previous year | Change |
|---|---|---|
| 1981 | -10.72 % change on previous year | — |
| 1982 | 2.14 % change on previous year | -119.9% |
| 1983 | -15.81 % change on previous year | -839.0% |
| 1984 | -30.69 % change on previous year | +94.1% |
| 1985 | -29.69 % change on previous year | -3.3% |
| 1986 | -18.91 % change on previous year | -36.3% |
| 1987 | -24.8 % change on previous year | +31.2% |
| 1988 | 8.56 % change on previous year | -134.5% |
| 1989 | -21.88 % change on previous year | -355.6% |
| 1990 | 16.54 % change on previous year | -175.6% |
| 1991 | -25.25 % change on previous year | -252.6% |
| 1992 | -50.75 % change on previous year | +101.0% |
| 1993 | -50.54 % change on previous year | -0.4% |
| 1994 | 13.02 % change on previous year | -125.8% |
| 1995 | 31.24 % change on previous year | +140.0% |
| 1996 | -6.78 % change on previous year | -121.7% |
| 1997 | 343.62 % change on previous year | -5170.5% |
| 1998 | -79.47 % change on previous year | -123.1% |
| 1999 | -69.5 % change on previous year | -12.6% |
| 2000 | -10.4 % change on previous year | -85.0% |
| 2001 | 116.11 % change on previous year | -1216.1% |
| 2002 | -46.62 % change on previous year | -140.2% |
| 2003 | 269.48 % change on previous year | -678.0% |
| 2004 | -68.8 % change on previous year | -125.5% |
| 2005 | 254.37 % change on previous year | -469.7% |
| 2006 | -59.7 % change on previous year | -123.5% |
| 2007 | -48.13 % change on previous year | -19.4% |
| 2008 | 19.39 % change on previous year | -140.3% |
| 2009 | 1.27 % change on previous year | -93.4% |
| 2010 | 83.96 % change on previous year | +6491.0% |
| 2011 | 44.1 % change on previous year | -47.5% |
| 2012 | 58.24 % change on previous year | +32.1% |
| 2013 | -38.76 % change on previous year | -166.5% |
| 2014 | -44.68 % change on previous year | +15.3% |
| 2015 | -50 % change on previous year | +11.9% |
| 2016 | 94.69 % change on previous year | -289.4% |
| 2017 | 148.86 % change on previous year | +57.2% |
| 2018 | 14.34 % change on previous year | -90.4% |
| 2019 | -30.83 % change on previous year | -315.0% |
| 2020 | -31.06 % change on previous year | +0.8% |
| 2021 | -51.42 % change on previous year | +65.5% |
| 2022 | 131.72 % change on previous year | -356.2% |
| 2023 | 98.81 % change on previous year | -25.0% |
| 2024 | -9.51 % change on previous year | -109.6% |
| 2025 | -64.6 % change on previous year | +579.6% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | -15.76 % change on previous year | -30.69 % change on previous year | 8.56 % change on previous year | 9 |
| 1990s | 12.21 % change on previous year | -79.47 % change on previous year | 343.62 % change on previous year | 10 |
| 2000s | 42.7 % change on previous year | -68.8 % change on previous year | 269.48 % change on previous year | 10 |
| 2010s | 27.99 % change on previous year | -50 % change on previous year | 148.86 % change on previous year | 10 |
| 2020s | 12.32 % change on previous year | -64.6 % change on previous year | 131.72 % change on previous year | 6 |
Countries ranked near Western Pacific (WHO region)
- 8 Gabon 233.33 % change on previous year compare
- 9 Spain 200 % change on previous year compare
- 9 Cambodia 200 % change on previous year compare
- 9 Poland 200 % change on previous year compare
- 12 Australia 188.89 % change on previous year compare
- 13 Nepal 159.26 % change on previous year compare
- 14 Canada 150 % change on previous year compare
- 14 Thailand 150 % change on previous year compare
More health data for Western Pacific (WHO region)
- Total tetanus - number of reported cases, gaps filled 5,464 (2025)
- Measles - number of reported cases, gaps filled 78,782 (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)
- Pertussis - number of reported cases, annual growth rate -73.21 % 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)
- Measles - number of reported cases 78,782 (2025)
- Diphtheria - number of reported cases 428 (2025)
Frequently asked questions
- What is diphtheria - number of reported cases, annual growth rate in Western Pacific (WHO region)?
- Diphtheria - number of reported cases, annual growth rate in Western Pacific (WHO region) was -64.6 % change on previous year in 2025, according to Statizoid (derived).
- What is the highest diphtheria - number of reported cases, annual growth rate recorded in Western Pacific (WHO region)?
- The highest recorded value was 343.62 % change on previous year in 1997.
- What is the lowest diphtheria - number of reported cases, annual growth rate recorded in Western Pacific (WHO region)?
- The lowest recorded value was -79.47 % change on previous year in 1998.
- How does Western Pacific (WHO region) rank for diphtheria - number of reported cases, annual growth rate?
- Western Pacific (WHO region) ranks 11th out of 11 groups with data for 2025.
- Is diphtheria - number of reported cases, annual growth rate rising or falling in Western Pacific (WHO region)?
- Over the last ten years it is down 29.2%. 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 Diphtheria - number of reported cases, annual growth rate. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 45 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 Diphtheria - number of reported cases. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.
Computed from
- Diphtheria - 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 Diphtheria - number of reported cases. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.