Coverage of West Nile virus cases in the Netherlands, including meningitis and mosquito transmission.
The Netherlands' largest West Nile virus outbreak has reached 44 human cases and five deaths. Sanquin now screens all blood donations after a transfusion-linked fatality. Most people face low risk, but expats should take mosquito precautions, especially in Zuid-Holland and Utrecht.
The Netherlands has 18 confirmed West Nile virus cases and three deaths in 2026, the worst outbreak yet. Expats are advised to use mosquito nets and protect against bites, especially in affected provinces like Utrecht, Noord-Holland, and Gelderland.
Nine people in the Netherlands have contracted West Nile virus in 2026, including one death. The virus is now established in the country, but the risk of serious illness remains very low. Here's what internationals need to know about symptoms, transmission, and prevention.