Influenza

FluNet Summary

18 April 2016

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

National Influenza Centres (NICs) and other national influenza laboratories from 92 countries, areas or territories reported data to FluNet for the time period from 21 March 2016 to 03 April 2016 a (data as of 2016-04-15 03:54:50 UTC).The WHO GISRS laboratories tested more than 101187 specimens during that time period. 24302 were positive for influenza viruses, of which 13251 (54.5%) were typed as influenza A and 11051 (45.5%) as influenza B. Of the sub-typed influenza A viruses, 4895 (85.8%) were influenza A(H1N1)pdm09 and 811 (14.2%) were influenza A(H3N2). Of the characterized B viruses, 473 (19.6%) belonged to the B-Yamagata lineage and 1936 (80.4%) to the B-Victoria lineage.

Global circulation of influenza viruses
(GISRS-FluNet, snapshot 15 April 2016)

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aThe time period from 21 March 2016 to 03 April 2016 corresponds to

  • FluNet / American calendar / International standard ISO 8601: weeks 12 and 13

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