Table 1. Distribution of RSV infection episodes among individuals during the 2009/2010 RSV season in a household cohort, coastal Kenya.

Characteristic	Categories	Individuals in study (n=493)	Individuals infected (n=179)		Infection episodes (n=208)		Total AUC a (n=7875.47)
		n	n	%	n	%	n	%
Age at infection	<1y	55	31	17.3	35	16.8	2424.1	30.7
	1-<5y	82	41	22.9	51	24.5	2011.8	25.5
	5-<15y	165	64	35.8	73	35.1	2241.7	28.4
	15-<40y	147	35	19.6	40	19.2	854.0	10.8
	> = 40y	44	8	4.5	9	4.3	366.9	4.6
Sex	Female	272	96	53.6	118	56.7	4392.4	55.6
	Male	221	83	46.4	90	43.3	3506.2	44.4
Symptomatic	No	87	71	39.7	90	43.3	2145.2	27.2
	Yes	406	108	60.3	118	56.7	5753.3	72.8
Participant in school b	No	259	101	56.4	119	57.2	5184.2	65.6
	Yes	204	78	43.6	89	42.8	2714.4	34.4
Living with smoker in household	No	389	155	86.6	181	87	7081.2	89.7
	Yes	104	24	13.4	27	13	817.3	10.3
Household size	< = 5	37	22	12.3	25	12	992.6	12.6
	6 to 10	180	52	29.1	61	29.3	2605.3	33.0
	11 to 15	101	35	19.6	40	19.2	1360.5	17.2
	>15	175	70	39.1	82	39.4	2940.1	37.2
Infection with other viruses	No	43	83	46.4	110	52.9	5054.6	64.0
	Yes	450	96	53.6	98	47.1	2844.0	36.0
In household with outbreak	No	162	14	7.8	192	92.3	7460.6	94.5
	Yes	331	165	92.2	16	7.7	438.0	5.5
Infecting RSV group c	RSV A		66	36.9	83	39.9	2838.1	35.9
	RSV B		91	50.8	111	53.4	4170.0	52.8
	RSV A & B		22	12.3	14	6.7	890.5	11.3
Order of the episode in individual	First		152	84.9	179	86.1	7130.3	90.3
	Subsequent		27	15.1	29	13.9	768.3	9.7
Introducer of RSV infection in household	Primary case		66	36.9	70	33.7	2372.7	30.0
	Others		113	63.1	138	66.4	5525.9	70.0

^aTotal amount of virus shed (log ₁₀ RNA copies * days). ^bIncludes some participants in the age groups 1-<5 years, 5-<15 years, and 15-<40 years only. ^cIndividuals could appear in one or more categories of this variable.