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 (2025w09), the incidence rate of acute respiratory infection (ARI) cases consulting in general practice was estimated at 223 cases per 100,000 population (95% CI [201 ; 245]).
Subject to future data consolidation, this rate is decreasing compared to the previous week (consolidated data for 2025w08: 283 [263 ; 303]).

At the regional level, the highest incidence rates were noted in: Grand Est (361 [273 ; 450]), Hauts-de-France (296 [199 ; 394]) and Bretagne (294 [215 ; 373]).

Influenza: the incidence rate of influenza cases seen in general practice for an ARI was estimated at 92 cases per 100,000 population (95% CI [75; 108]), corresponding to 61,468 [50,591; 72,345] new cases (Data sources: Sentinelles, SOS Médecins, DUMG Rouen and DERMG Côte d’Azur).
Subject to future data consolidation, this rate is still decreasing compared to the previous weeks and is now at a low level of activity (consolidated data for 2025w08: 145 [126; 164]).

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 [2; 13]), corresponding to 5,072 [1,555; 8,589] new cases (data sources: Sentinelles, SOS Médecins, Rouen and Côte d’Azur Universities).
Subject to future data consolidation, this rate is stable compared to the previous week and remains at a low level of activity (consolidated data for 2025w08: 7 [2; 13]).

Bronchiolitis in children under 2 : data from week 2025w01 to 2025w09 are currently not available (data source: IQVIA (EMR)).

Covid-19: the incidence rate of Covid-19 cases seen in general practice for an ARI was estimated at 6 cases per 100,000 population (95% CI [4; 8]), corresponding to 3,898 [2,547; 5,249] new cases (Data source: Sentinelles).
Subject to future data consolidation, this rate is stable compared to the previous week and remains at a low level of activity (consolidated data for 2025w08: 3 [2; 5]). 

 
The purpose of acute diarrhea surveillance is to monitor gastroenteritis outbreaks.

In mainland France, last week (2025w09), the incidence rate of acute diarrhea cases seen in general practice was estimated at 95 cases per 100,000 population (95% CI [80 ; 111]). 
Subject to future data consolidation, this rate is stable compared to the previous week and corresponds to a similar activity level than those usually observed at this time of the year (consolidated data for 2025w08: 82 [71 ; 93]).

At the regional level, the highest incidence rates were noted in: Grand Est (160 [102 ; 217]), Hauts-de-France (156 [88 ; 224]) and Auvergne-Rhône-Alpes (111 [67 ; 156]).

Data sources: Sentinelles

 In mainland France, last week (2025w09), the incidence rate of Chickenpox cases seen in general practice was estimated at 6 cases per 100,000 population (95% CI [2 ; 9]). 
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 2025w08: 4 [2 ; 7]).

At the regional level, the highest incidence rates were noted in: Hauts-de-France (18 [0 ; 41]), Nouvelle-Aquitaine (16 [0 ; 39]) and Bretagne (9 [0 ; 26]).

Data sources: Sentinelles