Table 2.

ALRI episodes among infants (age < 12 months) of pregnancy vaccinees and controls

		ALRI hospitalisations		ALRI clinic presentations
		23vPPV in Pregnancy		23vPPV in Pregnancy
		Yes (n = 75)	No (n = 150)	Yes (n = 23)	No (n = 47)
Children	n (%)	6 (8)	19 (13)	18 (78)	34 (72)
Episodes	n	9	23	45	81
Episodes per child*	median (range)	1 (1–4)	1 (1–5)	2.5 (1–6)	2 (1–7)
Multiple episodes*	n (%)	1 (17)	1 (5)	13 (72)	18 (53)
Length of stay in days	median (range)	3 (1–7)	3 (1–39)	na	na
Days between episodes#	median (range)	28 (23–211)	66 (35–105)	64 (18–182)	46 (16–220)

*per presenting child. ^#Among children with multiple episodes. na: not applicable