Estimating the burden of influenza-attributable severe acute respiratory infections on the hospital system in Metropolitan France, 2012–2018

Table 2 Estimated influenza-attributable SARI hospitalizations using periodic regression and GLM, per influenza epidemics, 2012–2018, metropolitan France

Influenza epidemic (Dominant influenza viruses*)	Periodic regression			GLM			Influenza***
Influenza epidemic (Dominant influenza viruses*)	H	H/100,000	95% CI	H	H/100,000	95% CI	H/100,000
2012–2013 (B-Yamagata)	32 790	50.9	[44.3–57.4]	NA	NA	NA	21.5
2013–2014 (A(H1N1) et A(H3N2))	8 964	13.9	[11.1–16.7]	10 964	17.0	[15.1–18.9]	12.7
2014–2015 (A(H3N2))	38 519	59.7	[55.4–64.1]	44 804	69.5	[66.3–72.7]	34.8
2015–2016 (B-Victoria)	24 921	38.7	[34.2–43.1]	29 430	45.6	[43.7–47.6]	27.7
2016–2017 (A(H3N2))	52 354	81.2	[75.4–87.0]	49 817	77.3	[73.7–80.9]	45.9
2017–2018 (A(H1N1) et B-Yamagata)	69 610	108.0	[99.9–116.0]	70 780	109.8	[106.2-113.3]	69.0
Average of five epidemics**	38 873	60.3	NC	41 159	63.8	NC	38.0

*Source CNR of influenza viruses **influenza epidemics 2013–2014 to 2017–2018; H = hospitalizations; NA = not available; *** with a principal, related or associated influenza diagnosis, results from previous studies [2, 10]; NC = not calculated

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