Reported tick-borne encephalitis surveillance for Poland (POL) — ≈ Stable · 2025 — latest record 2026-10-02
As of 31 October 2026, Poland has reported 905 tick-borne encephalitis cases in 2026, as published by National Institute of Public Health (NIZP-PZH). The full year 2025 closed at 938 cases. 2025 closed 16% above 2024, which is why the trend reads “≈ Stable”.
Of the 8 countries reporting tick-borne encephalitis to ENCLAI in 2026, Poland accounts for 37.1% of reported cases and ranks 1 by case count.
ENCLAI has logged 18 surveillance records for tick-borne encephalitis in Poland in 2026, with the most detailed reporting in Oct 2026 (17 records); the case counts run to 2026-10-31. 2 distinct surveillance sources reported this pair in 2026.
Reporting authorities for these counts: National Institute of Public Health (NIZP-PZH) — Epidemiological Reports
One email a day: what changed in official disease reporting worldwide, with the source named for every number. Reported facts only — no forecasts and no interpretation.
| Year | Reported cases | Share of worldwide reports |
|---|---|---|
| 2023 | not reported | — |
| 2024 | 805 | 16.2% |
| 2025 | 938 | 23.0% |
| 2026 (year to date) | 905 | 37.1% |
Reporting bounds and case definitions vary; historical baselines are a separate comparison measure. Worldwide share compares this country's reported figure with the sum of all countries reporting tick-borne encephalitis to ENCLAI for that year. "Incomplete year" means our sources cover less than ten months of that year, so no full-year figure is shown; "outbreak total to date" is a running total since an outbreak began, not a count for one year.
| Month | Records | Reporting sources |
|---|---|---|
| Jul 2026 | 1 | 1 |
| Oct 2026 | 17 | 1 |
A record is one dated surveillance publication or one row of an official table; a month with many records is a month with detailed reporting, not necessarily more cases.
Areas within Poland with the most tick-borne encephalitis records this year:
| Area | Records |
|---|---|
| Dolnośląskie | 1 |
| Kujawsko-Pomorskie | 1 |
| Łódzkie | 1 |
| Lubelskie | 1 |
| Lubuskie | 1 |
| Country | 2026 cases | Trend |
|---|---|---|
| Finland | 461 | ≈ Stable · 2025 |
| Switzerland | 399 | ▲ Rising · 2025 |
| Lithuania | 378 | ▲ Rising · 2025 |
| Latvia | 155 | ≈ Stable · 2025 |
| Slovenia | 70 |
| Disease | 2026 cases | Trend |
|---|---|---|
| Respiratory syncytial virus infection | 76,067 | ≈ Stable · 2025 |
| Varicella | 73,825 | ▼ Declining · 2025 |
| Lyme borreliosis | 43,105 | ▲ Rising · 2025 |
| COVID-19 | 34,918 | ▼ Declining · 2025 |
| Clostridioides difficile colitis | 18,567 | ≈ Stable · 2025 |
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One email a day: what changed in official disease reporting worldwide, with the source named for every number. Reported facts only — no forecasts and no interpretation.
