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 (2025w02), the incidence rate of acute respiratory infection (ARI) cases consulting in general practice was estimated at 579 cases per 100,000 population (95% CI [548; 610]) (data source: Sentinelles).
Subject to future data consolidation, this rate is increasing compared to the previous week (consolidated data for 2025w01: 492 [462; 523]) and reaches a high level of intensity.

At the regional level, the highest incidence rates were noted in: Centre-Val de Loire (672 [507; 837]), Occitanie (641 [526; 757]) and Bretagne (617 [489; 744]).

Influenza: the incidence rate of influenza cases seen in general practice for an ARI was estimated at 296 influenza cases seen in general practice per 100,000 population (95% CI [266; 326]), corresponding to 197,507 [177,336; 217,648] new cases (sata 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 2025w01:  201 [168; 233], corresponding to 133,777 [111,844; 155,710] new cases).

RSV infection: the incidence rate of RSV infection cases seen in general practice for an ARI was estimated at 38 cases per 100,000 population (95% CI [26; 50]), corresponding to 25,390 [17,425; 33,355] 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 (consolidated data for 2025w01: 22 [12; 31], corresponding to 14,317 [7,929; 20,705] new cases).

Bronchiolitis in children < 2 years: data for weeks 2025w01 and 2025w02 are not available. In week 52 (2024w52), the decline in the incidence of bronchiolitis in children under 2 years of age observed since mid-December continued (source: IQVIA (EMR)).

Covid-19: the incidence rate of Covid-19 cases seen in general practice for acute respiratory infection was estimated at 12 cases per 100,000 population (95% CI [9; 14]), corresponding to 7,788 [5,934; 99,462] new cases (data source: Sentinelles).
Subject to future data consolidation, this rate is stable compared to the previous week (consolidated data for 2025w01: 12 [9; 15], corresponding to 8,074 [5,857; 10,291] new cases).

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

In mainland France, last week (2025w02), the incidence rate of acute diarrhea cases seen in general practice was estimated at 101 cases per 100,000 population (95% CI [88; 114]). 
Subject to future data consolidation, this rate is increasing compared to the previous week (consolidated data for 2025w01: 55 [46; 64]) but is at a lower level of activity than those usually observed during this period.

At the regional level, the highest incidence rates were noted in: Grand Est (158 [111; 204]), Occitanie (112 [69; 155]) and Hauts-de-France (110 [69; 150]).

Data sources: Sentinelles

In mainland France, last week (2025w02), the incidence rate of Chickenpox cases seen in general practice was estimated at 11 cases per 100,000 population (95% CI [4; 18]). 
Subject to future data consolidation, this rate is slightly increasing compared to the previous week (consolidated data for 2025w01: 9 [4; 15]) but is at a lower level of activity than those usually observed during this period.

At the regional level, the highest incidence rates were noted in: Corse (38 [0; 76]), Auvergne-Rhône-Alpes (29 [10; 47]) and Normandie (15 [0; 44]).

Data sources: Sentinelles