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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illness” (ILI, defined as sudden onset of fever above 39°C, accompanied by myalgia and respiratory signs) has been replaced by “acute respiratory infections” (ARI, defined as sudden onset of fever or feeling of fever and respiratory signs).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 40 of the year 2021, from 10/04/2021 to 10/10/2021 :

Published on 10-13-2021 18:10 - 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 objective of ARI surveillance is to monitor epidemics of COVID-19, INFLUENZA as well as those due to other seasonal respiratory viruses (RSV, rhinovirus and metapneumovirus).

In metropolitan France, last week (2021w40), the incidence rate of ARI consultating (or teleconsulting) in general practice was estimated at 122 cases per 100,000 inhabitants (95% CI [108 ; 136]). This rate has been increasing since the beginning of September (consolidated data 2021s39: 97 [86; 108]).

At the regional level, the highest incidence rates were noted in: Bretagne (260 [169 ; 351]), Bourgogne-Franche-Comté (195 [86 ; 304]) and Provence-Alpes-Côte d’Azur (192 [120 ; 264]). 

COVID-19 monitoring: Last week (2021w40), the incidence rate of ARI cases due to SARS-CoV-2 (COVID-19) seen in general practice was estimated at 3 cases per 100,000 population (95% CI [2; 5]), corresponding to 2,181 [1,187; 3,175] new cases of COVID-19 seen in general practice. This rate is stable compared to those in recent weeks (consolidated data for 2021w39 : 3 [2; 5], representing 2,274 [1,425; 3,069] new cases of ARI due to COVID-19 seen in general practice).

Influenza surveillance: two samples have been tested positive for influenza viruses since the beginning of the surveillance. Both of them were detected for influenza A viruses and were isolated in week 2021w38 (mid-september).

Surveillance of other respiratory viruses: circulation of rhinoviruses, RSV and metapneumoviruses observed in week 2021w40.
  Estimated weekly incidence rate Estimated weekly incidence
France 122 [108 ; 136] 80663 [71290 ; 90036]
Regions
Grand Est 105 [49 ; 161] 5928 [2766 ; 9090]
Nouvelle-Aquitaine 98 [57 ; 139] 5975 [3485 ; 8465]
Auvergne-Rhône-Alpes 93 [56 ; 130] 7630 [4570 ; 10690]
Bourgogne-Franche-Comté 195 [86 ; 304] 5610 [2467 ; 8753]
Bretagne 260 [169 ; 351] 8894 [5793 ; 11995]
Centre-Val de Loire 151 [78 ; 224] 3971 [2047 ; 5895]
Corse 60 [0 ; 125] 206 [0 ; 428]
Ile-de-France 135 [97 ; 173] 16653 [11942 ; 21364]
Occitanie 147 [96 ; 198] 8807 [5723 ; 11891]
Hauts-de-France 81 [31 ; 131] 4908 [1858 ; 7958]
Normandie 38 [12 ; 64] 1298 [407 ; 2189]
Pays de la Loire 72 [16 ; 128] 2775 [626 ; 4924]
Provence-Alpes-Côte d'Azur 192 [120 ; 264] 9848 [6178 ; 13518]

Acute diarrhea   Définition

  Low to moderate activity in general practice

Previously on sentiweb            

 
In metropolitan France, last week (2021w40), the incidence rate of acute diarrhea seen in general practice was estimated at 107 cases per 100,000 inhabitants (95% CI [91 ; 123]). This rate is increasing compared to week 2021w39 (consolidated data: 88 [77 ; 99]) with low level of activity compared to those usually observed in this period.

At the regional level, the highest incidence rates were noted in: Provence-Alpes-Côte d’Azur (158 [94 ; 222]), Hauts-de-France (152 [94 ; 210]) and Auvergne-Rhône-Alpes (102 [66 ; 138]).
  Estimated weekly incidence rate Estimated weekly incidence
France 107 [91 ; 123] 70453 [60079 ; 80827]
Regions
Grand Est 100 [54 ; 146] 5659 [3066 ; 8252]
Nouvelle-Aquitaine 69 [32 ; 106] 4205 [1965 ; 6445]
Auvergne-Rhône-Alpes 102 [66 ; 138] 8337 [5427 ; 11247]
Bourgogne-Franche-Comté 36 [0 ; 73] 1027 [0 ; 2083]
Bretagne 57 [20 ; 94] 1958 [679 ; 3237]
Centre-Val de Loire 71 [24 ; 118] 1863 [626 ; 3100]
Corse 30 [0 ; 72] 104 [0 ; 247]
Ile-de-France 83 [59 ; 107] 10184 [7195 ; 13173]
Occitanie 64 [33 ; 95] 3859 [1977 ; 5741]
Hauts-de-France 152 [94 ; 210] 9271 [5720 ; 12822]
Normandie 89 [35 ; 143] 3013 [1186 ; 4840]
Pays de la Loire 46 [0 ; 96] 1794 [0 ; 3719]
Provence-Alpes-Côte d'Azur 158 [94 ; 222] 8101 [4797 ; 11405]

Chickenpox   Définition

  Low activity in general practice

Previously on sentiweb            

 
In metropolitan France, last week (2021w40), the incidence rate of Chickenpox seen in general practice was estimated at 8 cases per 100,000 inhabitants (95% CI [4 ; 12]). This rate is slightly increasing compared to week 2021w39 (consolidated data: 3 [1 ; 5]) and with an activity level close to those usually observed in this period. 

At the regional level, the highest incidence rates were noted in: Pays de la Loire (23 [1 ; 45]), Centre-Val de Loire (12 [0 ; 34]), Normandie (12 [0 ; 31]), Ile-de-France (9 [1 ; 17]), Grand Est (9 [0 ; 20]) and Bourgogne-Franche-Comté (9 [0 ; 27]).
 
  Estimated weekly incidence rate Estimated weekly incidence
France 8 [4 ; 12] 5027 [2208 ; 7846]
Regions
Grand Est 9 [0 ; 20] 514 [0 ; 1146]
Nouvelle-Aquitaine 0 [0 ; 0] 0 [0 ; 0]
Auvergne-Rhône-Alpes 0 [0 ; 2] 30 [0 ; 184]
Bourgogne-Franche-Comté 9 [0 ; 27] 262 [0 ; 776]
Bretagne 7 [0 ; 17] 236 [0 ; 581]
Centre-Val de Loire 12 [0 ; 34] 312 [0 ; 889]
Corse 0 [0 ; 0] 0 [0 ; 0]
Ile-de-France 9 [1 ; 17] 1051 [48 ; 2054]
Occitanie 2 [0 ; 7] 121 [0 ; 411]
Hauts-de-France 2 [0 ; 6] 133 [0 ; 394]
Normandie 12 [0 ; 31] 404 [0 ; 1047]
Pays de la Loire 23 [1 ; 45] 885 [40 ; 1730]
Provence-Alpes-Côte d'Azur 0 [0 ; 3] 23 [0 ; 175]