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Warning

COVID-19 and Influenza Surveillance : role of the Sentinelles network

In March 2020, following the emergence of SARS-CoV-2 (COVID-19), the “Sentinelles surveillance” evolved. The surveillance of  “influenza-like illness” (ILI, defined as sudden onset of fever above 39°C, accompanied by myalgia and respiratory signs) has been replaced by “acute respiratory infections” (ARI, defined as sudden onset of fever or feeling of fever and respiratory signs). This new surveillance enables both the monitoring of the COVID-19 pandemic and epidemics due to other respiratory viruses (influenza, respiratory syncytial virus, rhinovirus and metapneumovirus), based on patients consulting a general practitioner for an ARI. This surveillance is carried out with “Santé publique France” (the national agency for public health), the National Reference Center for respiratory infections (“Institut Pasteur” and “Hospices Civils de Lyon”) and the University of Corsica.

Data from the Sentinelles network are integrated into the overall national COVID-19 surveillance coordinated by “Santé publique France”. For more information, you can consult the weekly COVID-19 and influenza newsletters from “Santé publique France”

At the same time, the Sentinelles network is leading studies and research works on the COVID-19 presented in the “COVID-19” section of this website.

Observed situation in France for the week 47 of the year 2021, from 11/22/2021 to 11/28/2021 :

Published on 12-01-2021 17:12 - These news are updated on wednesday

Acute Respiratory Infection (ARI) (COVID-19, Influenza and other respiratory viruses)   Définition

  Moderate activity in general practice

Previously on sentiweb            

 
The purpose of ARI surveillance is to monitor outbreaks of influenza, COVID-19 and other seasonal respiratory viruses (RSV, rhinovirus and metapneumovirus).

In metropolitan France, last week (2021w47), the incidence rate of ARI consultating (or teleconsulting) in general practice was estimated at 164 cases per 100,000 inhabitants (95% CI [148 ; 180]). This rate is increasing compared to week 2021w46 (consolidated data: 130 [118 ; 142]).

At the regional level, the highest incidence rates were noted in: Provence-Alpes-Côte d’Azur (462 [346 ; 578]), Bretagne (208 [123 ; 293]) and Occitanie (206 [149 ; 263]). 

COVID-19 monitoring: Last week (2021w47), the SARS-CoV-2 positivity rate of patients consulting for ARI was 8%, 23% and 17%, respectively, in the 0-14, 15-64, and 65 and older age groups. These estimates are stable across all age groups.
The incidence rate of ARI cases due to SARS-CoV-2 (COVID-19) seen in general practice was estimated at 32 cases per 100,000 population (95% CI [26; 38]), corresponding to 20,868 [16,885; 24,851] new cases of COVID-19 seen in general practice. This rate is clearly increasing since two weeks

Influenza surveillance: twelve samples have been tested positive for type A influenza virus since the beginning of the surveillance early September. Eight of them were subtyped as A(H3N2), one as A(H1N1)pdm09 and three were non-subtyped influenza A viruses.

Surveillance of other respiratory viruses: circulation of RSV, rhinoviruses and metapneumoviruses observed in week 2021w47.
  Estimated weekly incidence rate Estimated weekly incidence
France 146 [133 ; 159] 96499 [87890 ; 105108]
Regions
Grand Est 187 [134 ; 240] 10560 [7573 ; 13547]
Nouvelle-Aquitaine 138 [97 ; 179] 8442 [5909 ; 10975]
Auvergne-Rhône-Alpes 118 [87 ; 149] 9659 [7157 ; 12161]
Bourgogne-Franche-Comté 76 [29 ; 123] 2198 [834 ; 3562]
Bretagne 164 [105 ; 223] 5620 [3602 ; 7638]
Centre-Val de Loire 104 [58 ; 150] 2737 [1523 ; 3951]
Corse 130 [55 ; 205] 448 [191 ; 705]
Ile-de-France 134 [93 ; 175] 16556 [11475 ; 21637]
Occitanie 181 [131 ; 231] 10859 [7836 ; 13882]
Hauts-de-France 58 [29 ; 87] 3532 [1781 ; 5283]
Normandie 59 [31 ; 87] 2014 [1071 ; 2957]
Pays de la Loire 140 [84 ; 196] 5424 [3267 ; 7581]
Provence-Alpes-Côte d'Azur 408 [311 ; 505] 20920 [15925 ; 25915]

Acute diarrhea   Définition

  Moderate activity in general practice

Previously on sentiweb            

 
The purpose of acute diarrhea surveillance is to monitor gastroenteritis outbreaks.
In metropolitan France, last week (2021w47), the incidence rate of acute diarrhea seen in general practice was estimated at 123 cases per 100,000 inhabitants (95% CI [109 ; 137]). This rate is slightly increasing compared to week 2021w46 (consolidated data: 115 [102 ; 128]) with an activity level below those usually observed in this period with an activity level below those usually observed in this period.​​​​​

At the regional level, the highest incidence rates were noted in: Hauts-de-France (183 [121 ; 245]), Nouvelle-Aquitaine (134 [90 ; 178]) and Grand Est (132 [77 ; 187]).
  Estimated weekly incidence rate Estimated weekly incidence
France 116 [104 ; 128] 76729 [68787 ; 84671]
Regions
Grand Est 117 [77 ; 157] 6642 [4354 ; 8930]
Nouvelle-Aquitaine 110 [74 ; 146] 6708 [4499 ; 8917]
Auvergne-Rhône-Alpes 81 [55 ; 107] 6643 [4480 ; 8806]
Bourgogne-Franche-Comté 109 [54 ; 164] 3150 [1567 ; 4733]
Bretagne 80 [42 ; 118] 2738 [1451 ; 4025]
Centre-Val de Loire 101 [54 ; 148] 2664 [1417 ; 3911]
Corse 68 [14 ; 122] 233 [48 ; 418]
Ile-de-France 96 [64 ; 128] 11877 [7877 ; 15877]
Occitanie 110 [68 ; 152] 6598 [4065 ; 9131]
Hauts-de-France 178 [129 ; 227] 10823 [7860 ; 13786]
Normandie 47 [19 ; 75] 1590 [635 ; 2545]
Pays de la Loire 123 [71 ; 175] 4746 [2725 ; 6767]
Provence-Alpes-Côte d'Azur 114 [65 ; 163] 5833 [3299 ; 8367]

Chickenpox   Définition

  Low to moderate activity in general practice

Previously on sentiweb            

 
In metropolitan France, last week (2021w47), the incidence rate of Chickenpox seen in general practice was estimated at 19 cases per 100,000 inhabitants (95% CI [14 ; 24]). This rate is increasing compared to week 2021w46 (consolidated data: 13 [9 ; 17]) and with an activity level close to those usually observed in this period.

At the regional level, the highest incidence rates were noted in: Nouvelle-Aquitaine (55 [26 ; 84]), Centre-Val de Loire (26 [0 ; 54]) and Grand Est (23 [3 ; 43]).
  Estimated weekly incidence rate Estimated weekly incidence
France 17 [12 ; 22] 11322 [8282 ; 14362]
Regions
Grand Est 19 [3 ; 35] 1079 [172 ; 1986]
Nouvelle-Aquitaine 50 [24 ; 76] 3081 [1461 ; 4701]
Auvergne-Rhône-Alpes 8 [1 ; 15] 649 [80 ; 1218]
Bourgogne-Franche-Comté 3 [0 ; 13] 94 [0 ; 375]
Bretagne 7 [0 ; 15] 239 [0 ; 509]
Centre-Val de Loire 18 [0 ; 37] 464 [0 ; 971]
Corse 0 [0 ; 0] 0 [0 ; 0]
Ile-de-France 21 [6 ; 36] 2581 [752 ; 4410]
Occitanie 15 [0 ; 34] 876 [0 ; 2038]
Hauts-de-France 23 [6 ; 40] 1406 [345 ; 2467]
Normandie 16 [0 ; 34] 551 [0 ; 1147]
Pays de la Loire 1 [0 ; 5] 52 [0 ; 210]
Provence-Alpes-Côte d'Azur 14 [0 ; 34] 712 [0 ; 1733]