Influenza

FluNet Summary

15 December 2014

Source: Laboratory confirmed data from the Global Influenza Surveillance and Response System (GISRS).

Based on FluNet reporting (as of 11 December 2014, 14:25 UTC), during weeks 47 to 48 (16 November 2014 to 29 November 2014), National Influenza Centres (NICs) and other national influenza laboratories from 49 countries, areas or territories reported data. The WHO GISRS laboratories tested more than 59 940 specimens. 7227 were positive for influenza viruses, of which 6603 (91.4%) were typed as influenza A and 624 (8.6%) as influenza B. Of the sub-typed influenza A viruses, 84 (2.4%) were influenza A(H1N1)pdm09 and 3472 (97.6%) were influenza A(H3N2). Of the characterized B viruses, 140 (97.2%) belonged to the B-Yamagata lineage and 4 (2.8%) to the B-Victoria lineage.

Due to changes in data collection platforms, data from the WHO Regional Office for Europe are temporarily not available at global level. Those data will be uploaded to FluNet and FluID as soon as possible. Information on European influenza activity can be found at http://www.flunewseurope.org/

Global circulation of influenza viruses
(GISRS-FluNet, snapshot 11 December 2014)

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