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 (2025w48), the incidence rate of acute respiratory infection (ARI) cases consulting in general practice was estimated at 191 cases per 100,000 population (95% CI [182; 199]).
Subject to future data consolidation, this rate is increasing compared to the previous week and corresponds to a similar level of activity to those usually observed at this time of the year (consolidated data for 2025w47: 160 [153; 168]).

At the regional level, the highest incidence rates were noted in: Bretagne (327 [278; 377]), Nouvelle-Aquitaine (285 [248; 322]) and Grand Est (256 [222; 289]). 

Influenza: the incidence rate of influenza cases seen in general practice for an ARI was estimated at 45 cases per 100,000 population (95% CI [34; 57]) (data sources: Sentinelles, SOS Médecins, DUMG Rouen and DERMG Côte d’Azur).
Subject to future data consolidation, this rate is increasing compared to the previous week (consolidated data for 2025w47:  16 [11; 21]), especially among children (0-14 years), but remains at a low level of activity. We are observing a circulation of influenza viruses similar to the past season (2024-2025) at the same period, but slightly higher than the previous ones at the same period of time.

RSV infection: the incidence rate of RSV infection cases seen in general practice for an ARI was estimated at 24 cases per 100,000 population (95% CI [16; 32]) (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 (consolidated data for 2025w47: 21 [15; 28]) and corresponds to a moderate level of activity.

Bronchiolitis in children under 1 year old: the incidence rate of bronchiolitis cases in children under 1 seen in general practice was estimated at 198 cases per 100,000 population (95% CI [94; 302]) (data source: IQVIA (EMR)).
Subject to future data consolidation, this rate is stable compared to the previous weeks (consolidated data for 2025w47: 345 [204; 486]) 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 10 cases per 100,000 population (95% CI [7; 12]) (data source: Sentinelles).
Subject to future data consolidation, this rate is slightly increasing compared to the previous weeks (consolidated data for 2025w47: 6 [5; 8]), but remains at a low level of activity (below the ones usually observed at this time of the year).

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

In mainland France, last week (2025w48), the incidence rate of acute diarrhea cases seen in general practice was estimated at 71 cases per 100,000 population (95% CI [66; 76]). 
Subject to future data consolidation, this rate is increasing compared to the previous week and corresponds to a similar level of activity to those usually observed at this time of the year (consolidated data for 2025w47: 58 [54; 63]).

At the regional level, the highest incidence rates were noted in: Grand Est (119 [95; 142]), Provence-Alpes-Côte d’Azur (96 [73; 119]) and Bretagne (94 [67; 121]).

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

In mainland France, last week (2025w48), the incidence rate of Chickenpox cases seen in general practice was estimated at 10 cases per 100,000 population (95% CI [8; 12]). 
Subject to future data consolidation, this rate is slightly increasing compared to the previous week and corresponds to a similar level of activity to those usually observed at this time of the year (consolidated data for 2025w47: 8 [7; 10]).

At the regional level, the highest incidence rates were noted in: Bretagne (15 [5; 25]), Provence-Alpes-Côte d’Azur (13 [4; 22]), Nouvelle-Aquitaine (13 [5; 22]) and Auvergne-Rhône-Alpes (11 [5; 16]).

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