Within the reporting period, 354 455 influenza virus detections (sentinel and non-sentinel combined) were reported, of which 73% (257 761) were type A and 26% (90 873) were type B virus; another 1.6% (5 821) were reported untyped.
Of the 52 442subtyped influenza A viruses (20% of detected type A viruses), 31 638 (60%) were subtype A(H1)pdm09 and 20 804 (40%) were subtype A(H3). Of the 90 873 reported influenza type B viruses, the lineage for 9 279 (10%) was determined, with all except one virus falling into the B/Victoria/2/87 lineage. One
report on viral RNA belonging to the B/Yamagata/16/88 lineage was submitted. Attempts to culture or sequence this virus were unsuccessful due to a very low viral load.