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Influenza activity in Switzerland : actual situation

 

Up-date 23 April 2014



Virological activity in Switzerland during the week 16/2014 

During the week 16, 99 practitioners of the Sentinel system reported 2.5 cases of influenza suspicion on 1'000 consultations. 

This rate is quite the same compared with the one reported previous week (1.7 cases for 1000 consultations).  

Table 1: Incidence of influenza-like illness consultations according to age and regions for 100'000 inhabitants during week 16/2014 

 
Grippebedingte Konsultationen
pro 100 000 Einwohner
Grippeaktivität
Klassierung, Trend
Inzidenz nach Altersklasse
0 - 4 Jahre
0
-
5 - 14 Jahre
7
-
15 - 29 Jahre
22
-
30 - 64 Jahre
22
-
>= 65 Jahre
18
-
Inzidenz nach Sentinella-Region
Region 1 (GE, NE, VD, VS)
0
keine, -
Region 2 (BE, FR, JU)
7
keine, -
Region 3 (AG, BL, BS, SO)
9
keine, -
Region 4 (LU, NW, OW, SZ, UR, ZG)
13
keine, -
Region 5 (AI, AR, GL, SG, SH, TG, ZH)
22
keine, -
Region 6 (GR, TI)
47
keine, -
Schweiz
17
-, -

Table 2: Influenza virus circulating in Switzerland and in Europe. Frequency of influenza types and subtypes isolated
during the current week and the cumulated weeks since the week 40/2013 
 
Aktuelle Woche
Kumulativ
Schweiz in Woche 16/2014
Anteil Influenza-positiver Proben
(Anzahl untersuchte Proben)
0%
(1)
33%
(578)
B
0%
2%
A(H3N2)
0%
55%
A(H1N1)pdm09
0%
41%
A nicht subtypisiert
0%
2%
Europa in Woche 15/2014
Anteil Influenza-positiver Proben
(Anzahl untersuchte Proben)
14%
(489)
27%
(33699)
B
10%
5%
A(H3N2)
34%
47%
A(H1N1)pdm09
24%
42%
A nicht subtypisiert
32%
6%
 
Influenza activity in Europe
 
Weekly bulletin of the EISN: click here

 

References
1. WHO / Europe influenza surveillance (EuroFlu.org), http://www.euroflu.org
2.
European Influenza Surveillance Network (EISN), European Center for Disease Prevention and Control ecdc, http://ecdc.europa.eu/en/Activities/Surveillance/EISN
3. Centers for Disease Control and Prevention (CDC), http://www.cdc.gov/flu/weekly/
4. World Health Organisation (WHO), Influenza update number 194, 2013; 1–8
5. World Health Organisation (WHO), Recommended viruses for influenza vaccines for use in the 2013–14 northern hemisphere influenza season,
6. World Health Organisation (WHO), Recommended composition of influenza virus vaccines for use in the 2014 southern hemisphere influenza season
http://www.who.int/influenza/vaccines/virus/recommendations/201309_recommendation.pdf

  

Links
 

An interesting and original study was conducted on influenza infection at the university hospital of Geneva. The article can be accessed here: Iten et al, 2012. « Prévention de la grippe dans les Hôpitaux, un défi à relever », Bulletin 41, p696-698

 

Influenza viruses detected per week and Cases are classified according to the date when the sample was taken and

proportion of medical contacts for influenza-like illness (ILI) for 1000 consultations
FluA undet.: influenza A virus that is under subtypisation analysis 
B: influenza B viruses
A (H3N2) seasonal: influenza A (H3N2) virus
A (H1N1) seasonal: influenza A (H1N1) virus
A (H1N1) 2009: influenza A (H1N1) pandemique 2009

‰ ILI : percentage of consultation for influenza-like illness per week reported to the Swiss Federal Office of Public Health by the Sentinella doctors.

 

Europe

WHO/Europe influenza surveillance

http://www.euroflu.org/html/maps.html

  Dernière modification le 23/04/2014

 

 

 

Demande d'analyses de routine disponible au laboratoire de virologie
Centre de référence pour les Infections Virales Emergentes (CRIVE)
Centre National de Référence de l'Influenza (CNRI)
Epidémiologie des virus respiratoires
Epidémiologie des gastro-entérites virales
Epidémiologie virale dans les liquides céphalo-rachidiens (LCR)
Réalisation d'un frottis nasopharyngé
Epidémiologie des déclarations des maladies infectieuses (OFSP)