Health Monitoring in the Provence-Alpes-Côte d'Azur Region. Bulletin of September 10, 2025.
Key Points
Dengue, Chikungunya, and Zika
Since the last bulletin, two new outbreaks of local transmission of chikungunya have been identified, one in La Ciotat (1 case) and the other in Nice (1 case).
The epidemiological situation continues to evolve rapidly in the municipality of Antibes. The number of cases now stands at 71 (+33 cases since the previous update). There are several areas of circulation, including one in the municipality of La Gaude. The two other most significant outbreaks are in Fréjus (51 cases, +4 cases) and Vitrolles (46 cases, +5 cases).
As of September 8, the Provence-Alpes-Côte d’Azur (PACA) region, which is the most affected, has recorded 16 outbreaks of local transmission, including 12 of chikungunya (194 cases, +47) and 4 of dengue (10 cases, +1).
West Nile Virus Infections
Since the last bulletin, 3 new cases of West Nile virus (WNV) infection have been reported in Bouches-du-Rhône (+2 cases) and Var (+1 case). As of September 8, the Provence-Alpes-Côte d’Azur (PACA) region had recorded 17 cases of WNV infection.
High temperatures, heat wave
No heatwave is currently underway or expected in the coming days in the Paca region.
Emergency services activity remains relatively stable, while activity at SOS Médecins is very low.
Asthma at the start of the school year
Monitoring of asthma-related visits among children via analysis of OSCOUR® and SOS Médecins indicators has been available since Week 34.
In Week 36, the week of the school year’s start, asthma-related activity among children under 15 increased in emergency departments, both for visits and for hospitalizations following a visit. This increase has not yet been observed at SOS Médecins.
In both networks, the observed level remains lower than that of the previous two years.
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