Influenza

FluNet Summary

09 January 2017

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

National Influenza Centres (NICs) and other national influenza laboratories from 74 countries, areas or territories reported data to FluNet for the time period 12 December 2016 to 25 December 2016 a (data as of 2017-01-06 04:12:46 UTC).The WHO GISRS laboratories tested more than 124657 specimens during that time period. Of these 25263 were positive for influenza viruses, of which 24223 (95.9%) were typed as influenza A and 1040 (4.1%) as influenza B. Of the sub-typed influenza A viruses, 159 (1.3%) were influenza A(H1N1)pdm09 and 11927 (98.7%) were influenza A(H3N2). Of the characterized B viruses, 67 (34.9%) belonged to the B-Yamagata lineage and 125 (65.1%) to the B-Victoria lineage.

Global circulation of influenza viruses
(GISRS-FluNet, snapshot 06 January 2017)

View full size chart
pdf, 366kb

aThe time period from 12 December 2016 to 25 December 2016 corresponds to

  • FluNet / American calendar / International standard ISO 8601: weeks 50 and 51

Other analyses