Key Points

Dengue, Chikungunya, and Zika

• A first indigenous outbreak of chikungunya has been identified in Corsica in the municipality of Grosseto-Prugna (Southern Corsica). A third case linked to this outbreak was identified on July 1.

• At the same time, six other outbreaks of locally transmitted chikungunya cases have been identified on the mainland. The number and early onset of these outbreaks in mainland France confirm the very high risk of numerous areas with local transmission of chikungunya by 2025.

• Since the start of enhanced surveillance (May 1), three imported cases of dengue and three imported cases of chikungunya have been confirmed (no new cases compared to last week).

Heatwave

• A heatwave has been underway in Corsica since June 27. Haute-Corse, which was under a yellow alert for June 27, was upgraded to an orange alert on June 28. Corse-du-Sud has been under a yellow alert since June 28. According to Météo France, temperatures could remain high in the coming days.

• The regional analysis of emergency care utilization indicates that the iCanicule composite health indicator (including medical diagnoses of hyperthermia, dehydration, and hyponatremia) has remained stable since the start of the heatwave. SOS Médecins staffing levels were very low. Nevertheless, heat-related activity began to increase as early as the beginning of June.

Pollen exposure, which may pose an allergy risk

• In Corsica, the pollen index, established by Atmo France and accredited air quality monitoring associations, has dropped to a moderate level, still linked to grass pollen.

• Allergy-related activity at the SOS Médecins association remains within the expected range for the season.

• In light of this information, this item will be removed from future bulletins but reinstated if the situation warrants it.