Reported herpesviral encephalitis surveillance for Poland (POL) — ≈ Stable · 2025 — latest record 2026-10-02
As of 31 October 2026, Poland has reported 50 herpesviral encephalitis cases in 2026, as published by National Institute of Public Health (NIZP-PZH). The full year 2025 closed at 45 cases. 2025 closed 1% above the 2023–2024 average, which is why the trend reads “≈ Stable”.
Of the 1 countries reporting herpesviral encephalitis to ENCLAI in 2026, Poland accounts for 100.0% of reported cases and ranks 1 by case count.
ENCLAI has logged 132 surveillance records for herpesviral encephalitis in Poland in 2026, with the most detailed reporting in Oct 2026 (132 records); the case counts run to 2026-10-31. 1 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 | 32 | 100.0% |
| 2024 | 57 | 100.0% |
| 2025 | 45 | 100.0% |
| 2026 (year to date) | 50 | 100.0% |
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 herpesviral 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 |
|---|---|---|
| Oct 2026 | 132 | 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 herpesviral encephalitis records this year:
| Area | Records |
|---|---|
| Śląskie | 11 |
| Łódzkie | 10 |
| Mazowieckie | 10 |
| Dolnośląskie | 9 |
| Małopolskie | 9 |
| 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.
