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 (2026w03), the incidence rate of acute respiratory infection (ARI) cases consulting in general practice was estimated at 359 cases per 100,000 population (95% CI [347; 371]).
Subject to future data consolidation, this rate is increasing for the third consecutive week and corresponds to a similar level of activity than those usually observed at this time of the year (consolidated data for 2026w02: 317 [307; 328]).

At the regional level, the highest incidence rates were noted in: Bretagne (545 [483; 607]), Nouvelle-Aquitaine (509 [458; 559]) and Corse (432 [313; 551]). 

Influenza: the incidence rate of influenza cases seen in general practice for an ARI was estimated at 167 cases per 100,000 population (95% CI [142; 192]), corresponding to 112,539 [95,671; 129,407] new cases (data sources: Sentinelles, SOS Médecins, DMGs Côte d’Azur, Rouen and Strasbourg).
Subject to future data consolidation, this rate is stable (consolidated data for 2026w02: 156 [134; 178]) and corresponds to a moderate level of activity. By age group, we note however an increase in children (0-14 ans).

RSV infection: the incidence rate of RSV infection cases seen in general practice for an ARI was estimated at 46 cases per 100,000 population (95% CI [34; 58]), corresponding to 31,239 [23,200; 39,278] new cases (data sources: Sentinelles, SOS Médecins, DMGs Côte d’Azur, Rouen and Strasbourg).
Subject to future data consolidation, this rate is slightly increasing (consolidated data for 2026w02: 36 [26; 45]) and corresponds to a high level of activity, in particular among adults (15 years and above).

Bronchiolitis in children under one year old : the incidence rate of bronchiolitis cases in children under one year old seen in general practice was estimated at 341 cases per 100,000 population (95% CI [153; 529]) (data source: IQVIA (EMR)).
Subject to future data consolidation, this rate is stable (consolidated data for 2026w02: 440 [215; 665]) and corresponds to a low level of activity.

Covid-19: the incidence rate of Covid-19 cases seen in general practice for an ARI was estimated at 3 cases per 100,000 population (95% CI [2; 5]), corresponding to 2,223 [1,330; 3,116] new cases (data source: Sentinelles).
Subject to future data consolidation, this rate is stable (consolidated data for 2026w02: 5 [4; 7]) and corresponds to a low level of activity.

The purpose of acute diarrhea surveillance is to monitor gastroenteritis outbreaks.
 
In mainland France, last week (2026w03), the incidence rate of acute diarrhea cases seen in general practice was estimated at 89 cases per 100,000 population (95% CI [83; 95]). 
Subject to future data consolidation, this rate is increasing compared to the previous week but corresponds to a lower level of activity than those usually observed at this time of the year (consolidated data for 2026w02: 75 [69; 80]).

At the regional level, the highest incidence rates were noted in: Nouvelle-Aquitaine (146 [118; 175]), Provence-Alpes-Côte d’Azur (142 [114; 171]) and Bretagne (138 [107; 170]).

Data sources: Sentinelles and IQVIA (EMR)

In mainland France, last week (2026w03), the incidence rate of Chickenpox cases seen in general practice was estimated at 6 cases per 100,000 population (95% CI [4; 7]). 
Subject to future data consolidation, this rate is slightly decreasing for two weeks and corresponds to a lower level of activity than those usually observed at this time of the year (consolidated data for 2026w02: 9 [7; 11]).

At the regional level, the highest incidence rates were noted in: Corse (15 [0; 37]), Pays de la Loire (10 [0; 22]) and Ile-de-France (9 [5; 13]).

Data sources: Sentinelles and IQVIA (EMR)