OBERNAI & ERSTEIN, BAS-RHIN – Public health officials have announced targeted mosquito control operations scheduled for Thursday night, August 8, 2025, in Obernai and Erstein following confirmed cases of dengue and Zika virus in individuals recently returned from tropical regions. The interventions aim too prevent the potential spread of these viruses by controlling the aedes albopictus,commonly known as the tiger mosquito.
Targeted Demoustication in Obernai and Erstein
Demoustication efforts will concentrate on specific areas within Obernai and Erstein identified through epidemiological and entomological investigations. These investigations pinpointed locations frequented by the infected individuals during their period of viremia – the stage when the virus is present in the bloodstream and transmissible to mosquitoes. The exact sectors undergoing treatment have not been publicly disclosed to avoid disrupting the effectiveness of the operation.
Residents in the affected zones are being directly notified and are advised to take precautionary measures during the insecticide request. These include remaining indoors with windows closed,bringing pets indoors,and rinsing outdoor furniture after the treatment is completed. The bas-rhin prefecture is coordinating the operation with local authorities.
Understanding the Tiger Mosquito and Vector-Borne Diseases
The tiger mosquito, first detected in France in 2004, is an invasive species originating from Southeast Asia. It is indeed a highly efficient vector for several arboviruses, including dengue, Zika, chikungunya, and possibly West Nile virus. Unlike native mosquito species, the tiger mosquito is active during daylight hours and bites aggressively.
Dengue fever causes flu-like symptoms, including high fever, severe headache, muscle and joint pain, and rash. Zika virus infection can cause mild symptoms in most people, but poses a important risk to pregnant women due to its association with birth defects.Chikungunya causes fever and severe joint pain, which can be debilitating and long-lasting.
Currently, there is no specific cure for dengue, Zika, or chikungunya. Treatment focuses on managing symptoms. Prevention, therefore, is paramount.This includes eliminating standing water where mosquitoes breed – in flower pots, gutters, tires, and other containers – and using mosquito repellent.
The regional Health Agency (ARS) Grand Est is actively monitoring the mosquito population and conducting surveillance to detect and respond to potential outbreaks. Citizens are encouraged to report any suspected tiger mosquito sightings to the national mosquito reporting platform.
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