Influenza

FluNet Summary

12 June 2017

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

National Influenza Centres (NICs) and other national influenza laboratories from 75 countries, areas or territories reported data to FluNet for the time period from 15 May 2017 to 28 May 2017 a (data as of 2017-06-09 03:31:42 UTC).The WHO GISRS laboratories tested more than 69469 specimens during that time period. 5598 were positive for influenza viruses, of which 2798 (50%) were typed as influenza A and 2800 (50%) as influenza B. Of the sub-typed influenza A viruses, 897 (40.1%) were influenza A(H1N1)pdm09 and 1339 (59.9%) were influenza A(H3N2). Of the characterized B viruses, 216 (38.7%) belonged to the B-Yamagata lineage and 342 (61.3%) to the B-Victoria lineage.

Global circulation of influenza viruses
(GISRS-FluNet, snapshot 09 June 2017)

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aThe time period from 15 May 2017 to 28 May 2017 corresponds to

  • FluNet / American calendar / International standard ISO 8601: weeks 20 and 21

Other analyses