Réseau Sentinelles
Epidemiological news
Semaine 202540 - Acute Respiratory Infection (ARI) - Moderate activity in general practice
Lundi 29 sept. 2025
ARI are caused by a variety of respiratory viruses including SARS-CoV-2 (Covid-19), influenza viruses, and other respiratory viruses such as RSV, rhinovirus, and metapneumovirus. The purpose of ARI surveillance is to monitor outbreaks of these viruses.In mainland France, last week (2025w40), the incidence rate of acute respiratory infection (ARI) cases consulting in general practice was estimated at 244 cases per 100,000 population (95% CI [224; 264]).
Subject to future data consolidation, this rate is still increasing compared to the previous week and corresponds to a level of activity slightly higher than those usually observed at this time of the year (consolidated data for 2025w39: 206 [190; 223]).
At the regional level, the highest incidence rates were noted in: Bretagne (389 [285; 492]), Grand Est (386 [297; 475]) and Nouvelle-Aquitaine (330 [254; 406]).
Circulation of respiratory viruses: since the beginning of virological surveillance of ARI for the 2025/2026 season on September 29 (2025w40), the main viruses circulating have been rhinovirus and SARS-CoV-2 (Covid-19).
Covid-19: the incidence rate of Covid-19 cases seen in general practice for an ARI was estimated at 51 cases per 100,000 population (95% CI [44; 58]).
Subject to future data consolidation, this rate is stable compared to the previous week but remains at a moderate level of activity (consolidated data for 2025w39: 51 [45; 58]).
Data source: Sentinelles, DUMG Rouen and Côte d'Azur, SOS Médecins
Semaine 202540 - Acute diarrhea - Low activity in general practice
Lundi 29 sept. 2025
The purpose of acute diarrhea surveillance is to monitor gastroenteritis outbreaks.In mainland France, last week (2025w40), the incidence rate of acute diarrhea cases seen in general practice was estimated at 60 cases per 100,000 population (95% CI [49; 71]).
Subject to future data consolidation, this rate is stable compared to the previous week and corresponds to a similar level of activity to those usually observed at this time of the year (consolidated data for 2025w39: 52 [44; 61]).
At the regional level, the highest incidence rates were noted in: Grand Est (96 [55; 138]), Nouvelle-Aquitaine (80 [38; 122]) and Bretagne (76 [29; 124]).
Data source: Sentinelles
Semaine 202540 - Chickenpox - Low activity in general practice
Lundi 29 sept. 2025
In mainland France, last week (2025w40), the incidence rate of Chickenpox cases seen in general practice was estimated at 3 cases per 100,000 population (95% CI [0; 6]). Subject to future data consolidation, this rate is stable compared to the previous week and corresponds to a lower activity level than those usually observed at this time of the year (consolidated data for 2025w39: 5 [2; 7]).
At the regional level, the highest incidence rates were noted in: Provence-Alpes-Côte d'Azur (15 [0; 43]), Occitanie (7 [0; 26]) and Hauts-de-France (5 [0; 15]).
Data source: Sentinelles
Sentiweb Weekly Report 202540