Influenza

FluNet Summary

02 May 2016

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

National Influenza Centres (NICs) and other national influenza laboratories from 90 countries, areas or territories reported data to FluNet for the time period from 04 April 2016 to 17 April 2016 a (data as of 2016-04-29 03:39:10 UTC).The WHO GISRS laboratories tested more than 105838 specimens during that time period. 20933 were positive for influenza viruses, of which 9821 (46.9%) were typed as influenza A and 11112 (53.1%) as influenza B. Of the sub-typed influenza A viruses, 3758 (84.8%) were influenza A(H1N1)pdm09 and 673 (15.2%) were influenza A(H3N2). Of the characterized B viruses, 481 (17.7%) belonged to the B-Yamagata lineage and 2231 (82.3%) to the B-Victoria lineage.

Global circulation of influenza viruses
(GISRS-FluNet, snapshot 29 April 2016)

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aThe time period from 04 April 2016 to 17 April 2016 corresponds to

  • FluNet / American calendar / International standard ISO 8601: weeks 14 and 15

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