Copenhagen Municipality Acts to Remove Invasive Oak Processionary Moth Nests

First Detection in the Capital

For the first time, the oak processionary moth (Thaumetopoea processionea) has been identified within the city limits of Copenhagen. The invasive species, which has been spreading across parts of Europe, was discovered in local oak trees, prompting immediate action from the Copenhagen Municipality to mitigate potential health risks to residents and visitors.

Health Risks and Safety Measures

The primary concern regarding the oak processionary moth lies in the thousands of tiny, toxic hairs found on the larvae. These hairs contain a protein called thaumetopoein, which can cause severe reactions. Authorities have warned the public to avoid contact with the nests and the caterpillars themselves. Potential health impacts include:

• Severe skin rashes and dermatitis
• Eye irritation and conjunctivitis
• Respiratory distress if hairs are inhaled
• Allergic reactions in sensitive individuals

Removal Operations

The municipality has initiated a specialized removal process to eliminate the nests safely. Because the hairs can remain toxic for years, the removal is being handled by professionals equipped with protective gear and specialized equipment to prevent the dispersal of the hairs during the extraction process. The city is monitoring affected areas closely to determine if further measures are required to contain the spread.

Public Guidance

Officials are urging citizens to report any sightings of the distinctive nests—which often appear as white, silken webs on the trunks or branches of oak trees—to the municipal authorities. The public is advised not to attempt to remove or disturb the nests under any circumstances. As one municipal representative noted, 'Public safety is our priority, and we are taking all necessary steps to manage this situation effectively.'