More water in the Netherlands brings risk of mosquito-borne diseases

2026-08-27

The Netherlands is working hard to change the landscape to better cope with climate change. More space is being made for water, for example by giving rivers more room or creating new nature reserves. This is important to prevent flooding and help nature, but it also has an unexpected consequence: it creates ideal breeding grounds for mosquitoes.

Experts warn that the increase in stagnant water could lead to more mosquitoes in our country. Some of these mosquito species can transmit viruses that are dangerous to humans. An example of this is the West Nile virus, which is already becoming more common in other parts of Europe. Although the risk in the Netherlands is currently still limited, scientists are closely monitoring the situation.

The West Nile virus is spread by mosquitoes that have become infected by birds. When such a mosquito then bites a human, the virus can be transmitted. Most people who become infected experience no or only mild symptoms, such as fever or headache. In rare cases, however, the virus can lead to serious illness, especially in the elderly or people with a weaker immune system.

The government and health authorities are now investigating how they can find a balance between nature management and public health. The goal is to maintain natural water storage without this leading to a mosquito plague. They are looking at ways to keep the water moving, because mosquitoes prefer to lay their eggs in stagnant water.

For now, there is no reason for major panic, but awareness is important. Citizens are advised to limit stagnant water in their own gardens, such as in rain barrels or flower pots, as much as possible. In this way, everyone can help to keep the risk of the spread of mosquito-borne diseases in the Netherlands as small as possible.