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 (2025w10), the incidence rate of acute respiratory infection (ARI) cases consulting in general practice was estimated at 151 cases per 100,000 population (95% CI [135; 166]) (data source: Sentinelles).
Subject to future data consolidation, this rate is still decreasing compared to previous weeks (consolidated data for 2025w09: 186 [168; 203]).

At the regional level, the highest incidence rates were noted in: Grand Est (272 [196; 348]), Bretagne (266 [182; 349]) and Auvergne-Rhône-Alpes (183 [133; 232]). 

Influenza: the incidence rate of influenza cases seen in general practice for an ARI was estimated at 59 cases per 100,000 population (95% CI [44; 75]), corresponding to 39,713 [29,222; 50,204] new cases (data sources: Sentinelles, SOS Médecins, DUMG Rouen and DERMG Côte d’Azur).
Subject to future data consolidation, this rate continued the decrease observed since the end of January (consolidated data for 2025w09: 76 [64; 88]), both in children and adults. Influenza activity is at a low level.

RSV infection: the incidence rate of RSV infection cases seen in general practice for an ARI was estimated at 8 cases per 100,000 population (95% CI [3; 13]), corresponding to 5,386 [1,902; 8,870] new cases (data sources: Sentinelles, SOS Médecins, Rouen and Côte d’Azur Universities).
Subject to future data consolidation, this rate is stable compared to those of the previous weeks (consolidated data for 2025w09: 8 [4; 13]) and is at a low level of activity.

Covid-19: the incidence rate of Covid-19 cases seen in general practice for acute respiratory infection was estimated at 2 cases per 100,000 population (95% CI [1; 4]), corresponding to 1,652 [721; 2,583] new cases (data source: Sentinelles).
Subject to future data consolidation, this rate is stable compared to those of the previous weeks (consolidated data for 2025w09: 5 [3; 6]) and is at a low level of activity.

The purpose of acute diarrhea surveillance is to monitor gastroenteritis outbreaks.
 
In mainland France, last week (2025w10), the incidence rate of acute diarrhea cases seen in general practice was estimated at 94 cases per 100,000 population (95% CI [81; 106]). 
Subject to future data consolidation, this rate is slightly increasing over the past two weeks and remains at a similar activity level to those usually observed at this time of the year (consolidated data for 2025w09: 86 [73; 99]).

At the regional level, the highest incidence rates were noted in: Grand Est (138 [85; 191]), Pays de la Loire (120 [37; 203]) and Centre-Val de Loire (119 [50; 188]).

Data source: Sentinelles

In mainland France, last week (2025w10), the incidence rate of Chickenpox cases seen in general practice was estimated at 5 cases per 100,000 population (95% CI [2 ; 7]). 
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 2025w09: 5 [2; 8]).

At the regional level, the highest incidence rates were noted in: Bourgogne-Franche-Comté (11 [0; 34]), Centre-Val de Loire (11 [0; 34]), Corse (8 [0; 23]), Grand Est (6 [0; 14]) and Ile-de-France (6 [1; 12]).

Data source: Sentinelles