Two cases of autochthonous dengue fever in Toulouse: mosquito control operation planned in the neighborhood on Tuesday

Two cases of autochthonous dengue fever in Toulouse: mosquito control operation planned in the neighborhood on Tuesday

Following the detection of two cases of autochthonous dengue, a mosquito operation will be carried out in the Amidonniers district of Toulouse on the night of Tuesday 4 October to Wednesday 5 October 2022. (©Illustration/Adobe Stock)

After Salvetat-Saint-Gilles in Haute-Garonne in September, Toulouse records his the first two cases of autochthonous dengue fever announcement this Monday evening Regional Health Agency of Occitanie (ARS). This is the first time in the Pink City…

A few weeks ago, a suspected case of dengue led to a mosquito operation in Toulouse, rue de Metz district. No sequel.

One home

ARS specifies:

“The first case concerns a person who did not travel and lives in the Amidonniers district. A second case of dengue fever with no travel history was also detected in the same household”.

Mosquito Tuesday

“To reduce the risk of transmission of this virus through tiger mosquitoes”, there will be a mosquito control operation in the district overnight from Tuesday to Wednesday.

“The residents concerned will also be approached this Wednesday by investigators from ARS and Public Health France as part of a door-to-door investigation.” At the same time, they will be given a health report on tiger mosquito and dengue fever
opportunity,” explains ARS. The classic procedure when a case of dengue fever is declared.

Second surgery in a few days

A second operation against mosquitoes will then be carried out in a few days, as happened in La Salvetat-Saint-Gilles. This is the procedure to follow if the dengue case is indigenous.

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“This two-stage treatment, one week apart, follows a national protocol that has been evaluated and appears to be effective. The goal is to kill all mosquitoes within 300 meters of a dengue outbreak, remembering that a mosquito will not move more than 30 to 50 meters in its lifetime,” explained Jean-Sébastien Dehecq in a few weeks. , sanitary engineer at the Occitanie Regional Health Agency, about the situation in Salvetat-Saint-Gilles. A situation that is therefore repeated in Toulouse.

Clinical symptoms of dengue fever

In addition, all residents of the Amidonniers district who show clinical signs suggestive of dengue infection are urged to consult their doctor. These suggestive symptoms, if there is no other established diagnosis, are:

  • high fever (>38.5°C) with sudden onset.
  • associated with at least one other clinical symptom such as headache, muscle pain or
    articular or lumbar.
  • in the absence of cough, runny nose, sore throat, difficulty breathing or infected wounds.

What is autochthonous dengue fever

Generally mild dengue is an infection that usually occurs in tropical areas. In most cases, dengue cases reported in mainland France are cases where the disease was contracted during a stay in the tropical zone. They are returning infected, we are talking about imported cases. However, the tiger mosquito present in our territory is able, if it bites an infected person returning from a trip, to transmit the virus to a non-traveled person after a few days. Then we talk about the indigenous case. The disease can manifest in a bitten person within an average of 4 to 7 days after the infectious bite.


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