(C)
Season 2018/19	Controls	Cases	Adjusted IVE
	Vacc/unvacc	Vacc/unvacc	IVE (%)	CI (95%)
Any influenza, N = 1,166			adj. sex, (age), comorbidity
All patients	66/655	18/427	63	36 to 79
0–14	34/321	4/156	73	20 to 91
15–64	26/316	11/251	51	−2 to 76
65+	6/18	3/20	56	−105 to 90
A(H1N1)pdm09, N = 1,017			adj. sex, (age), comorbidity
All patients	66/655	11/285	65	32 to 82
0–14	34/321	4/111	64	−5 to 88
15–64	26/316	6/164	63	7 to 85
65+	6/18	1/10	69	−196 to 97
Influenza A(H3N2), N = 868			adj. sex, (age), comorbidity
All patients	66/655	7/140	58	4 to 81
0–14	34/321	0/44	82	−14 to 100
15–64	26/316	5/86	21	−115 to 71
65+	6/18	2/10	43	−244 to 91