Country surveillance profile
Mosquito-borne disease in Croatia — 2025–2026 data
As of 14 June 2026, Mosticare tracks Croatia 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 · 14 June 2026 · CC BY 4.0
The data
| Country / region | Disease | Cases | Deaths | Period | Source | Updated |
|---|---|---|---|---|---|---|
| Croatia | West Nile virus | 4 | — | 2025 transmission season | ECDC · Surveillance of West Nile virus infections in Europe (monthly report, data to 3 December 2025) | 14 June 2026 |
About surveillance in Croatia
West Nile virus is the established mosquito-borne disease risk in Croatia. The European Centre for Disease Prevention and Control (ECDC) reported 4 locally acquired human WNV cases in Croatia during the 2025 transmission season. National surveillance is led by the Croatian Institute of Public Health (Hrvatski zavod za javno zdravstvo, HZJZ). The virus is spread chiefly by Culex pipiens mosquitoes; ECDC reports no Croatia-specific WNV deaths for 2025.
Frequently asked questions
What mosquito-borne diseases is Croatia monitoring in 2026?
Mosticare tracks Croatia surveillance for West Nile virus, each sourced to the responsible national authority or ECDC.
How many West Nile virus cases did Croatia report in 2025?
Croatia reported 4 West Nile virus cases in 2025 (2025 transmission season), per ECDC · Surveillance of West Nile virus infections in Europe (monthly report, data to 3 December 2025).
How many West Nile virus cases did Croatia report in 2025?
ECDC reported 4 locally acquired (autochthonous) human West Nile virus cases in Croatia during the 2025 season (data up to 10 December 2025). ECDC did not list any Croatia-specific WNV deaths for 2025. Mosticare republishes these official ECDC figures and does not collect surveillance data itself.
Which mosquitoes spread disease in Croatia?
West Nile virus in Croatia is transmitted mainly by native Culex pipiens mosquitoes, with lineage 2 detected locally. The invasive Asian tiger mosquito (Aedes albopictus) is also established in Croatia per ECDC/VectorNet (June 2025), while Aedes aegypti is not established there.
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.