Table 1. Number of laboratory tests, detections, and percentage positivity by influenza season, seasons 2014–2015 to 2022–2023, Canada.

Season	Influenza tests	Influenza detections	Cumulative percentage of tests positive	Influenza A detections	Influenza B detections	Total influenza A subtyped	Influenza A(H1N1) detections	Influenza A(H3N2) detections
2014–2015	246,930	42,976	17.4%	34,460 (80%)	8,516 (20%)	13,168	94 (1%)	13,074 (99%)
2015–2016	237,826	39,373	16.6%	28,422 (72%)	10,951 (28%)	12,345	11,168 (90%)	1,177 (10%)
2016–2017	267,827	39,365	14.7%	34,848 (89%)	4,517 (11%)	17,747	179 (1%)	17,568 (99%)
2017–2018	319,916	64,337	20.1%	36,103 (56%)	28,234 (44%)	12,443	1,280 (10%)	11,163 (90%)
2018–2019	310,462	49,037	15.8%	46,497 (95%)	2,540 (5%)	17,374	11,606 (67%)	5,768 (33%)
2019–2020	526,483	55,780	10.6%	32,891 (59%)	22,889 (41%)	7,246	4,985 (69%)	2,261 (31%)
2020–2021	666,576	71	0.0%	48 (68%)	23 (32%)	19	6 (32%)	13 (68%)
2021–2022	751,900	16,126	2.1%	15,894 (99%)	232 (1%)	4,734	83 (2%)	4,651 (98%)
2022–2023	1,188,962	74,344	6.3%	68,923 (93%)	5,421 (7%)	19,876	2,238 (11%)	17,638 (89%)