Influenza

FluNet Summary

06 February 2017

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

National Influenza Centres (NICs) and other national influenza laboratories from 81 countries, areas or territories reported data to FluNet for the time period from 09 January 2017 to 22 January 2017 a (data as of 2017-02-03 03:50:45 UTC). The WHO GISRS laboratories tested more than 159276 specimens during that time period. 40570 were positive for influenza viruses, of which 38581 (95.1%) were typed as influenza A and 1989 (4.9%) as influenza B. Of the sub-typed influenza A viruses, 294 (1.8%) were influenza A(H1N1)pdm09 and 16121 (98.2%) were influenza A(H3N2). Of the characterized B viruses, 186 (60.4%) belonged to the B-Yamagata lineage and 122 (39.6%) to the B-Victoria lineage.

Global circulation of influenza viruses
(GISRS-FluNet, snapshot 03 February 2017)

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aThe time period from 09 January 2017 to 22 January 2017 corresponds to

  • FluNet / American calendar / International standard ISO 8601: weeks 2 and 3

Other analyses