Influenza

FluNet Summary

25 January 2016

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

National Influenza Centres (NICs) and other national influenza laboratories from 91 countries, areas or territories reported data to FluNet for the time period from 28 December 2015 to 10 January 2016a ((data as of 2016-01-22 11:40:20 UTC).The WHO GISRS laboratories tested more than 65 649 specimens during that time period. 10 502 were positive for influenza viruses, of which 8481 (80.8%) were typed as influenza A and 2021 (19.2%) as influenza B. Of the sub-typed influenza A viruses, 5506 (80.2%) were influenza A(H1N1)pdm09 and 1357 (19.8%) were influenza A(H3N2). Of the characterized B viruses, 460 (49.1%) belonged to the B-Yamagata lineage and 477 (50.9%) to the B-Victoria lineage.

Global circulation of influenza viruses
(GISRS-FluNet, snapshot 22 January 2016)

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aThe time period from 28 December 2015 to 10 January 2016 corresponds to

  • FluNet / American calendar: weeks 52 (2015) and 1 (2016)
  • International standard ISO 8601: weeks 53 (2015) and 1 (2016)

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