Public Health Monitoring in the Pays de la Loire Region. Bulletin dated September 17, 2026.

Key Points 

West Nile Virus

  • First locally transmitted human cases of West Nile virus (Loire-Atlantique and Maine-et-Loire).

Nasopharyngitis and asthma in children under 15 

  • Indicators on the rise in Week 37. Moderate to high levels.

In relation to

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