Bas-Rhin. Mosquito control operation in Strasbourg and Truchtersheim after the discovery of a case of Zika
Following the discovery of a case of Zika in a person, a mosquito control operation will take place on the night of Tuesday, July 29 to Wednesday, July 30, 2025, in two neighborhoods in Strasbourg and Truchtersheim. This operation aims to prevent the proliferation of the tiger mosquito, which carries the disease.
Photo Jean-François Frey
A case of Zika has been detected in a person who recently returned from a tropical country where the virus is actively circulating, reports the Grand Est Regional Health Agency. As a result, a mosquito control operation is scheduled for the night of Tuesday, July 29 to Wednesday, July 30, 2025, in Strasbourg and Truchtersheim.
The infected person was identified as having circulated, during their viremic period - when the virus is present in the blood and can be transmitted to a mosquito - in two areas: the North Cemetery sector in Strasbourg (Robertsau district) and the shopping center district in Truchtersheim.
To destroy and prevent the proliferation of tiger mosquitoes, insecticide treatment will take place in the affected areas overnight, subject to suitable weather conditions. This action was decided "in consultation with health, municipal, and prefectural authorities," specifies the ARS Grand Est.
Residents of the affected streets have been informed of the measures to be taken: stay indoors, close windows, bring in pet bowls, and rinse garden furniture after the treatment. A safety perimeter will be set up during the treatment and maintained for the next 30 minutes.
Mosquito control already carried out in Bas-Rhin and Colmar
The operation launched in Strasbourg and Truchtersheim is not a first in the region. In recent weeks, several similar interventions have taken place in the Bas-Rhin , notably in Lipsheim, following the discovery of the first indigenous case of chikungunya in Alsace. The tiger mosquito, now well established, had been detected there, triggering targeted mosquito control within a 150-meter radius of the infected person's home.
In Haut-Rhin, Colmar was also affected at the beginning of July , after an imported case of dengue fever. The Sainte-Marie district was treated by nighttime spraying.
According to the ARS, ten mosquito control operations (six in Bas-Rhin and four in Haut-Rhin) were carried out around six human cases of dengue fever in 2024 in order to prevent any outbreak of an epidemic.
Les Dernières Nouvelles d'Alsace
