Table 4.

 Influenza vaccinations in cases and controls according to timing of vaccination (≤6 weeks or >6 weeks) before onset of symptoms and brand. Figures are numbers (percentages)

	Netherlands			Sweden			UK			France			Denmark
	Control	Case		Control	Case		Control	Case		Control	Case		Control	Case
Pandemic influenza A (H1N1) 2009 vaccine
None	149 (66)	13 (52)		23 (38)	7 (39)		279 (93)	28 (93)		20 (95)	5 (71)		568 (96)	20 (83)
≤6 weeks*	33 (15)	6 (24)		11 (18)	6 (33)		16 (5)	2 (7)		0	1 (14)		6 (1)	2 (8)
Dose:
1 dose	26 (12)	2 (8)		11 (18)	6 (33)		16 (5)	2 (7)		0	0		6 (1)	2 (8)
2 doses	7 (3)	4 (16)		0	0		2 (2)	0		0	1 (14)		0	0
Brand:
Pandemrix	0	0		11 (18)	6 (33)		13 (4)	2 (7)		0	0		6 (1)	2 (8)
Focetria	33 (15)	6 (24)		0	0		0	0		0	0		0	0
Panenza	0	0		0	0		0	0		0	1 (14)		0	0
Unknown	0	0		0	0		3 (1)	0		0	0		0	0
>6 weeks†	42 (19)	6 (24)		14 (23)	4 (22)		5 (2)	0		0	0		16 (3)	2 (8)
Unknown timing	3 (1)	0		12 (20)	1 (6)		0	0		1 (5)	1 (14)		0	0
Seasonal influenza vaccination
None	145 (64)	13 (52)		53 (88)	18 (100)		222 (74)	19 (63)		0	0		NA	0
≤6 weeks*	24 (11)	2 (8)		2 (3)	0		28 (9)	7 (23)		0	0		NA	0
>6 weeks†	57 (25)	10 (40)		3 (5)	0		50 (17)	4 (13)		0	0		NA	0
Unknown timing	1 (0.4)	0		2 (3)	0		0	0		0	0		NA	0

NA=not available.

*Vaccine given ≤6 weeks before index date (earliest date of first symptoms or diagnosis of Guillain-Barré syndrome).

‡Vaccine given >6 weeks before index date.