- Site launched with WHO's 2019–2025 worldwide plague data (Weekly Epidemiological Record, September 25, 2026).
- Added CDC U.S. counts for 2000–2025 and provisional 2026 counts through week 40 (2 cases: Arizona 1, New Mexico 1).
- Added the Irkutsk, Russia event (1 death, cause undetermined), based on WHO Disease Outbreak News of October 10, 2026.
- Note: CDC's weekly tables showed 5 U.S. cases for 2025; CDC's final yearly table shows 6. We use the final figure.
Updates and corrections
Every change to a number on this site, newest first.