Country surveillance profile
Mosquito-borne disease in Czechia — 2025–2026 data
As of 17 June 2026, Mosticare tracks Czechia surveillance for West Nile virus. No autochthonous human cases are reported year-to-date in 2026. Each figure cites the responsible national or EU authority.
Last updated · 17 June 2026 · CC BY 4.0
The data
| Country / region | Disease | Cases | Deaths | Period | Source | Updated |
|---|---|---|---|---|---|---|
| Czechia | West Nile virus | 0 | 0 | 2025 transmission season | European Centre for Disease Prevention and Control (ECDC) — 2025 end-of-season West Nile virus surveillance (data to 3 December 2025) | 17 June 2026 |
About surveillance in Czechia
According to the European Centre for Disease Prevention and Control (ECDC), Czechia reported no locally acquired human West Nile virus cases in the 2025 season: it is not among the 14 European countries ECDC listed with autochthonous cases. WNV still circulates enzootically in southern Czechia via Culex pipiens mosquitoes (autochthonous human cases occurred in 2018). The Aedes albopictus tiger mosquito is recorded as introduced, not established; Aedes aegypti is absent. The national surveillance authority is the State Health Institute (SZU).
Frequently asked questions
What mosquito-borne diseases is Czechia monitoring in 2026?
Mosticare tracks Czechia surveillance for West Nile virus, each sourced to the responsible national authority or ECDC.
Were there any West Nile virus cases in Czechia in 2025?
No locally acquired human cases were reported. ECDC's 2025 seasonal surveillance lists 14 European countries with autochthonous human West Nile virus cases, and Czechia is not one of them — an ECDC-published true negative for the 2025 season.
Does West Nile virus exist in Czechia at all?
Yes, it circulates enzootically. ECDC reported no human cases in 2025, but Czechia has prior locally acquired human infections (2018) and the virus (lineage 2) has been repeatedly detected in Culex mosquitoes in southern Czechia between 2013 and 2016. The carrier is the common house mosquito, Culex pipiens — not a day-biting tiger mosquito.
Is the Asian tiger mosquito (Aedes albopictus) in Czechia?
It is recorded as introduced, not established. ECDC's June 2025 VectorNet distribution lists 16 EU/EEA countries where Aedes albopictus is established; Czechia is not among them. Aedes aegypti is not present in Czechia.
Who monitors mosquito-borne disease in Czechia?
The Statni zdravotni ustav (SZU, the State Health Institute) in Prague runs national West Nile virus surveillance, which begins on 1 June each year, and reports into the EU-wide ECDC system. Mosticare is an independent civil-society aggregator and re-publishes these figures; it does not collect surveillance data itself.
Sources
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About this data
Mosticare aggregates and re-publishes vector-borne disease surveillance from ECDC, EFSA, and national ministries of health. Mosticare is an aggregator, not a primary surveillance authority — every figure on this page cites the originating source and is independently verifiable. This is a partial aggregation; for the complete EU/EEA totals, ECDC is the primary source.
The data behind this page is published as free, machine-readable feeds under CC BY 4.0 — the point-in-time incidence snapshot at /threat-map/feed.json (JSON Schema) and the multi-year trends at /threat-map/feed/trends.json (JSON Schema). See the live Europe threat map and the full data room.