Influenza

FluNet Summary

09 December 2019

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

National Influenza Centres (NICs) and other national influenza laboratories from 119 countries, areas or territories reported data to FluNet for the time period from 11 November 2019 to 24 November 2019a(data as of 2019-12-06 09:04:10 UTC). The WHO GISRS laboratories tested more than 92883 specimens during that time period. 7914 were positive for influenza viruses, of which 5629 (71.1%) were typed as influenza A and 2285 (28.9%) as influenza B. Of the sub-typed influenza A viruses, 1069 (28.5%) were influenza A(H1N1)pdm09 and 2682 (71.5%) were influenza A(H3N2). Of the characterized B viruses, 34 (3.2%) belonged to the B-Yamagata lineage and 1014 (96.8%) to the B-Victoria lineage.

Global circulation of influenza viruses
(GISRS-FluNet, snapshot 06 December 2019)

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aThe time period from 11 November 2019 to 24 November 2019 corresponds to

  • FluNet / American calendar / International standard ISO 8601: weeks 46 and 47

Other analyses