Country surveillance profile
Mosquito-borne disease in Slovakia — 2025–2026 data
As of 17 June 2026, Mosticare tracks Slovakia 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 |
|---|---|---|---|---|---|---|
| Slovakia | 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 Slovakia
Slovakia's mosquito-borne-disease surveillance is run by the Úrad verejného zdravotníctva Slovenskej republiky (Public Health Authority of the Slovak Republic), feeding into ECDC. ECDC reported 0 autochthonous human West Nile virus cases in Slovakia for the 2025 season (it was not among the 14 European countries that reported cases, as of 10 December 2025). WNV is known to circulate locally; Aedes albopictus is newly established (ECDC, June 2025) and Aedes aegypti is absent.
Frequently asked questions
What mosquito-borne diseases is Slovakia monitoring in 2026?
Mosticare tracks Slovakia surveillance for West Nile virus, each sourced to the responsible national authority or ECDC.
Were there any West Nile virus cases in Slovakia in 2025?
No autochthonous (locally acquired) human West Nile virus cases were reported in Slovakia for the 2025 season. ECDC's end-of-season surveillance (as of 10 December 2025) lists 14 European countries that reported human WNV cases, and Slovakia is not among them. This is an ECDC-published true negative, not an absence of data.
Does West Nile virus circulate in Slovakia at all?
Yes. The Public Health Authority of the Slovak Republic confirmed the country's first autochthonous human West Nile fever case in 2019, and its laboratories have confirmed several WNV-fever cases across 2019, 2022 and 2024 (some locally transmitted, some imported). A nationwide mosquito-monitoring programme has also detected WNV and Usutu virus in mosquitoes. A reported total of 0 human cases for 2025 reflects that season specifically.
Which mosquitoes carry West Nile virus in Slovakia?
The main local vector is the common house mosquito, Culex pipiens, which drives the bird-to-human (enzootic and bridge) transmission cycle in temperate Europe. Separately, the invasive Asian tiger mosquito, Aedes albopictus, was classified by ECDC as newly established in Slovakia in June 2025; it is chiefly relevant to dengue and chikungunya rather than WNV.
Is the Asian tiger mosquito (Aedes albopictus) present in Slovakia?
Yes. ECDC's VectorNet invasive-mosquito map classified Aedes albopictus as newly established in Slovakia in its June 2025 update, an upgrade from 'introduced' in the July 2024 map. The related species Aedes aegypti (yellow fever mosquito) is not recorded in Slovakia — within the EU/EEA it is established only in Cyprus.
Were there dengue or chikungunya cases in Slovakia in 2025?
No autochthonous dengue or chikungunya cases were reported in Slovakia in 2025. According to ECDC, mainland EU local-transmission clusters of dengue and chikungunya in 2025 were confined to France and Italy. Any dengue or chikungunya recorded in Slovak residents would be travel-associated rather than locally acquired.
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.