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 (2024w49), the incidence rate of acute respiratory infection (ARI) cases consulting in general practice was estimated at 276 cases per 100,000 population (95% CI [268; 284]) (Data sources: Sentinelles and Electronic Medical Records (EMR) IQVIA)).
Subject to future data consolidation, this rate continues the increase observed since the beginning of November (2024w45) (consolidated data for 2024w48: 220 [213; 227]).

At the regional level, the highest incidence rates were noted in: Normandie (408 [362; 455]), Provence-Alpes-Côte d’Azur (383 [347; 419]) and Bretagne (332 [285; 380]).

RSV infection: the incidence rate of RSV infection cases seen in general practice for an ARI was estimated at 49 cases per 100,000 population (95% CI [38; 59]), corresponding to 32 524 [25,376; 39,672] new cases (data sources: Sentinelles, SOS Médecins, Rouen and Côte d’Azur Universities). 
Subject to future data consolidation, this rate is strongly increasing compared to the previous week (consolidated data for 2024w48: 26 [18; 34]), in both age groups (0-14 and 15 and over).

Bronchiolitis in children under 2: the incidence rate of bronchiolitis cases in children under 2 seen in general practice was estimated at 478 cases per 100,000 population (95% CI [390; 566]) (Data source: IQVIA (EMR)).
Subject to future data consolidation, this rate continues the increase observed since mid-November (2024w46), even if this increase seems to slow down since two weeks (data consolidated for 2024w48: 419 [338; 500]).

Influenza: the incidence rate of influenza cases seen in general practice for an ARI was estimated at 77 cases per 100,000 population (95% CI [63; 91]), corresponding to 51,312 [42,182; 60,442] new cases (Data sources: Sentinelles, SOS Médecins, DUMG Rouen and DERMG Côte d’Azur).
Subject to future data consolidation, this rate is strongly increasing compared to the previous week (consolidated data for 2024w48:  37 [28; 46]), in both age groups (0-14 and 15 and over). This increase is more pronounced in children (0-14 years). A co-circulation of both influenza type A(H1N1)pdm09 and B (Victioria) is observed for now.

Covid-19: the incidence rate of Covid-19 cases seen in general practice for acute respiratory infection was estimated at 22 cases per 100,000 population (95% CI [18; 26]), corresponding to 14,633 [11,824; 17,442]] new cases (Data source: Sentinelles).
Subject to future data consolidation, this rate is slightly increasing compared to the previous week but remains at a low activity level (consolidated data for 2024w48: 18 [14; 21]).

In mainland France, last week (2024w49), the incidence rate of Chickenpox cases seen in general practice was estimated at 7 cases per 100,000 population (95% CI [6; 9]). 
Subject to future data consolidation, this rate is slightly increasing for the past three weeks (consolidated data for 2024w48: 6 [5; 7]), but remains 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 (17 [0; 38]), Hauts-de-France (12 [6  18]) and Nouvelle-Aquitaine (11 [3; 20]).

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

The purpose of acute diarrhea surveillance is to monitor gastroenteritis outbreaks.
 
In mainland France, last week (2024w49), the incidence rate of acute diarrhea cases seen in general practice was estimated at 69 cases per 100,000 population (95% CI [65; 73]). 
Subject to future data consolidation, this rate is slightly increasing since early November (2024w45) (consolidated data for 2024w48: 68 [64; 72]), but remains 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 (101 [83; 119]), Bretagne (100 [74; 126]) and Hauts-de-France (86 [71; 102]).

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