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 (2025w46), the incidence rate of acute respiratory infection (ARI) cases consulting in general practice was estimated at 115 cases per 100,000 population (95% CI [108; 121]).
Subject to future data consolidation, this rate is decreasing over the past few weeks but corresponds to a similar level of activity to those usually observed at this time of the year (consolidated data for 2025w45: 137 [130; 144]).

At the regional level, the highest incidence rates were noted in: Bretagne (182 [146; 218]), Grand Est (175 [147; 202]) and Nouvelle-Aquitaine (166 [138; 194]). 

RSV infection: the incidence rate of RSV infection cases seen in general practice for an ARI was estimated at 17 cases per 100,000 population (95% CI [10; 23]), corresponding to 11,142 [6,973; 15,311] new cases (data sources: Sentinelles, SOS Médecins, Rouen and Côte d’Azur Universities).
Subject to future data consolidation, this rate is increasing compared to the previous week mainly in children (0-14 years) (consolidated data for 2025w45: 6 [3; 8]).

Bronchiolitis in children under one year old : the incidence rate of bronchiolitis cases in children under 1 seen in general practice was estimated at  210 cases per 100,000 population (95% CI [91; 329]) (Data source: IQVIA (EMR)).
Subject to future data consolidation, this rate is stable compared to the previous weeks (consolidated data for 2025w45: 265 [142; 388]).

Influenza: the incidence rate of influenza cases seen in general practice for an ARI was estimated at 9 cases per 100,000 population (95% CI [5; 14]), corresponding to 6,186 [3,080; 9,292] new cases (Data sources: Sentinelles, SOS Médecins, DUMG Rouen and DERMG Côte d’Azur).
Subject to future data consolidation, this rate was globally stable compared to the previous week, but we note a slight increase in activity among children (0-14 years) (consolidated data for 2025w45: 9 [6; 13]).

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; 9]), corresponding to 4,328 [2,941; 5,715] new cases (Data source: Sentinelles).
Subject to future data consolidation, this rate is still decreasing (consolidated data for 2025w45: 9 [7; 11]).

The purpose of acute diarrhea surveillance is to monitor gastroenteritis outbreaks.
 
In mainland France, last week (2025w46), the incidence rate of acute diarrhea cases seen in general practice was estimated at 41 cases per 100,000 population (95% CI [37; 45]). 
Subject to future data consolidation, this rate is decreasing 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 2025w45: 53 [49; 57]).

At the regional level, the highest incidence rates were noted in: Hauts-de-France (54 [39; 69]), Grand Est (52 [37; 67]) and Auvergne-Rhône-Alpes (50 [36; 63]).

Data sources: Sentinelles and Electronic Medical Records (EMR) IQVIA

In mainland France, last week (2025w46), the incidence rate of Chickenpox cases seen in general practice was estimated at 6 cases per 100,000 population (95% CI [5; 8]). 
Subject to future data consolidation, this rate is stable compared to the previous weeks and corresponds to a similar level of activity to those usually observed at this time of the year (consolidated data for 2025w45: 7 [5; 8]).

At the regional level, the highest incidence rates were noted in: Pays de la Loire (13 [2; 25]), Centre-Val de Loire (10 [0; 20]), Auvergne-Rhône-Alpes (9 [3; 15]) and Normandie (9 [0; 17]).

Data sources: Sentinelles and Electronic Medical Records (EMR) IQVIA