Country surveillance profile
Mosquito-borne disease in Netherlands — 2025–2026 data
As of 17 June 2026, Mosticare tracks Netherlands 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 |
|---|---|---|---|---|---|---|
| Netherlands | 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 Netherlands
According to the European Centre for Disease Prevention and Control (ECDC), the Netherlands reported no locally acquired human West Nile virus cases during the 2025 season — it was not among the 14 European countries that did. The national authority, RIVM (National Institute for Public Health and the Environment), confirms no human cases since 2020. The main mosquito vector is the common house mosquito, Culex pipiens.
Frequently asked questions
What mosquito-borne diseases is Netherlands monitoring in 2026?
Mosticare tracks Netherlands surveillance for West Nile virus, each sourced to the responsible national authority or ECDC.
Were there any human West Nile virus cases in the Netherlands in 2025?
No. ECDC's 2025 surveillance lists 14 European countries with locally acquired human West Nile virus cases, and the Netherlands is not one of them. RIVM, the national public-health authority, states there have been no human West Nile virus cases in the Netherlands since 2020. The virus was, however, detected in a mosquito pool in South Holland and in horses during autumn 2025.
Which mosquito spreads West Nile virus in the Netherlands?
The common house mosquito, Culex pipiens, which RIVM describes as the most common mosquito in the Netherlands and the carrier of West Nile virus. It is a native species, not an invasive tropical mosquito.
Is the tiger mosquito (Aedes albopictus) established in the Netherlands?
No. According to ECDC, Aedes albopictus has been repeatedly introduced into the Netherlands (historically via the lucky-bamboo and used-tyre trade) but is not established — it is absent from the ECDC VectorNet list of countries with established populations as of June 2025, and control measures have so far prevented it from establishing outside greenhouses. Aedes aegypti is likewise only intercepted, not established.
Was there any dengue or chikungunya transmission in the Netherlands in 2025?
No locally acquired (autochthonous) dengue, chikungunya or Zika cases were reported in the Netherlands in 2025. Because the relevant invasive Aedes vectors are not established, sustained local transmission of these viruses is not currently expected; imported cases in returning travellers can still occur.
Sources
Explore more
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.