Influenza

FluNet Summary

14 October 2019

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

National Influenza Centres (NICs) and other national influenza laboratories from 94 countries, areas or territories reported data to FluNet for the time period from 16 September 2019 to 29 September 2019a(data as of 2019-10-11 01:51:30 UTC). The WHO GISRS laboratories tested more than 63162 specimens during that time period. 3494 were positive for influenza viruses, of which 1946 (55.7%) were typed as influenza A and 1548 (44.3%) as influenza B. Of the sub-typed influenza A viruses, 447 (35.5%) were influenza A(H1N1)pdm09 and 813 (64.5%) were influenza A(H3N2). Of the characterized B viruses, 56 (14.3%) belonged to the B-Yamagata lineage and 336 (85.7%) to the B-Victoria lineage.

Global circulation of influenza viruses
(GISRS-FluNet, snapshot 11 October 2019)

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aThe time period from 16 September 2019 to 29 September 2019 corresponds to

  • FluNet / American calendar / International standard ISO 8601: weeks 38 and 39

Other analyses