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 virus.

In mainland France, last week (2026w11), the incidence rate of acute respiratory infection (ARI) cases consulting in general practice was estimated at 107 cases per 100,000 population (95% CI [92; 122]).
Subject to future data consolidation, this rate is still decreasing and corresponds to a lower activity level than those usually observed at this time of the year (consolidated data for 2026w10: 136 [128; 143]).

At the regional level, the highest incidence rates were noted in: Bretagne (236 [156 ; 317]), Grand Est (106 [60 ; 151]) and Nouvelle-Aquitaine (106 [64 ; 149]).

Influenza: the incidence rate of influenza cases seen in general practice for an ARI was estimated at 4 cases per 100,000 population (95% CI [1; 7]) (data sources: Sentinelles, SOS Médecins, DMGs Côte d’Azur, Rouen and Strasbourg).
Subject to future data consolidation, this rate is stable compared to the previous weeks (consolidated data for 2026w10: 3 [1; 6]) and corresponds to a low activity level.

RSV infection: the incidence rate of RSV infection cases seen in general practice for an ARI was estimated at 4 cases per 100,000 population (95% CI [1; 7]) (data sources: Sentinelles, SOS Médecins, DMGs Côte d’Azur, Rouen and Strasbourg).
Subject to future data consolidation, this rate is slightly decreasing compared to the previous week (consolidated data for 2026w10: 13 [8; 17]) and corresponds to a low activity level.

Bronchiolitis in children under one year old: Data for week 2026w11 are currently unavailable. Two weeks ago (2026w10), the incidence rate of bronchiolitis cases seen in general practice was estimated at 402 cases per 100,000 population (95% CI [180; 624]) (data source: IQVIA (EMR)).
Subject to future data consolidation, this rate was stable compared to the previous weeks (consolidated data for 2026w9: 364 [177; 551]) and was at a low activity level.

Covid-19: the incidence rate of Covid-19 cases seen in general practice for an ARI was estimated at 4 cases per 100,000 population (95% CI [1; 6]) (data source: Sentinelles).
Subject to future data consolidation, this rate is stable compared to the previous weeks (consolidated data for 2026w10: 2 [1; 3]) and corresponds to a low activity level.  

The purpose of acute diarrhea surveillance is to monitor gastroenteritis outbreaks.
 
In mainland France, last week (2026w11), the incidence rate of acute diarrhea cases seen in general practice was estimated at 85 cases per 100,000 population (95% CI [73; 98]). 
Subject to future data consolidation, this rate is slightly increasing compared to the previous week and corresponds to a similar activity level to those usually observed at this time of the year (consolidated data for 2026w10: 75 [70; 81]).

At the regional level, the highest incidence rates were noted in: Nouvelle-Aquitaine (140 [41; 240]), Grand Est (131 [77; 185]) and Bretagne (129 [69; 190]).

Data sources: Sentinelles and IQVIA (EMR)

In mainland France, last week (2026w11), the incidence rate of chickenpox cases seen in general practice was estimated at 9 cases per 100,000 population (95% CI [5; 13]). 
Subject to future data consolidation, this rate is stable compared to the previous week and corresponds to a lower level of activity than those usually observed at this time of the year (consolidated data for 2026w10: 11 [9; 13]).

At the regional level, the highest incidence rates were noted in: Centre-Val de Loire (41 [0; 111]), Corse (14 [0; 36]), Nouvelle-Aquitaine (14 [0; 29]) and Ile-de-France (13 [3; 23]).

Sata sources: Sentinelles and IQVIA (EMR)