Public Health Monitoring in the Hauts-de-France Region. Bulletin dated September 8, 2026.

Key Points 

Heat Wave, Extreme Heat

An orange heat wave alert was in effect for the entire Hauts-de-France region for three consecutive days from July 11 to 13, but the heat wave lasted a week in the departments of Aisne and Oise. An increase in healthcare utilization due to the heatwave was observed at the regional level, but it was much lower than that seen during the June heatwave. 

  • 118 emergency room visits due to heat-related illness between August 12 and 16 
  • 57 SOS Médecins calls due to heat-related illness between July 8 and 16 

Asthma and Allergies 

  • After an increase observed in May and June, healthcare utilization for asthma and allergies has returned to its usual fluctuations.

Dengue, Chikungunya, and Zika

Two departments in the Hauts-de-France region are infested with tiger mosquitoes: Aisne and Oise. 

  • 20 imported cases of arboviral diseases since May 1
  • 0 reported cases of local transmission

In relation to

Fortes chaleurs, canicule

Extreme heat, heat wave

thematic dossier

Heat waves can have a significant impact on health. It is therefore essential to take proper precautions. Certain measures must be put in place, especially for those most at risk.

Dengue

thematic dossier

Dengue fever is a viral disease transmitted by mosquitoes of the genus Aedes. The most common symptoms are fever and joint pain. Its complications can be severe.

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