First death from West Nile virus reported in the Netherlands

2026-08-26

For the first time, someone in the Netherlands has died from West Nile virus contracted within the country. The National Institute for Public Health and the Environment (RIVM) confirms that the patient was infected by a mosquito bite within Dutch borders. Until now, infections with this virus in the Netherlands were rare, or were contracted during travel abroad.

West Nile virus is spread by infected mosquitoes. When a mosquito bites an infected bird and subsequently a human, the virus can be transmitted. Most people who become infected do not get sick or experience only mild symptoms, such as fever and headache. In rare cases, however, the virus can lead to severe inflammation of the brain or the meninges, which is particularly dangerous for the elderly or people with a weakened immune system.

The RIVM is currently investigating how the virus is spreading in the Netherlands. Experts indicate that the chance of a major outbreak is currently small, as the virus is not yet widely present among the Dutch mosquito population. Nevertheless, the health agency is calling on people to be alert to mosquito bites, especially in late summer when mosquitoes are still active.

To prevent infection, experts advise wearing protective clothing and using insect repellents containing DEET. Installing window screens in the home can also help keep mosquitoes out. The RIVM continues to monitor the situation closely and will inform the public if there are any new developments that require additional precautions.