Table 1.

Baseline Clinical Measurements among Survivors and Close Contacts^*

Characteristic	<12 Yr of Age		12–17 Yr of Age		≥18 Yr of Age		Overall†
	Survivors (N = 106)	Contacts (N = 440)	Survivors (N = 99)	Contacts (N = 410)	Survivors (N = 761)	Contacts (N = 1500)	Survivors (N = 966)	Contacts (N = 2350)
Age (yr)
Median	8	7	14	14	33	31	29	23
IQR	6–9	5–9	13–16	13–16	25–42	24– 41	19–40	13–34
Female sex (%)	43.4	53.4	58.6	53.2	55.7	57.1	54.7	55.7
Pregnant at entry (%)	NA	NA	8.5	6.9	13.2	9.0	12.6	8.5
Body-mass index‡
Median	15.7	15.6	18.6	19.3	23.7	23.1	22.5	21.3
IQR	14.6–16.8	14.8–16.5	17.4–20.6	17.5–21.1	21.3–27.1	21–26.8	19.5–26.3	18.2–24.6
HIV infection (%)	NA	NA	0	0.5	1.6	3.3	1.4	2.7
Syphilis (%)	NA	NA	2.1	1.0	4.5	4.9	4.2	4.1
Antibody concentration (EU/ml)
Median	28,017	63	22,564	84	18,288	90	19,242	83
IQR	16,127–52,837	34–133	16,939–35,884	47–162	11,860–29,855	52–165	12,550–33,201	48–160
Time since symptom onset (days)
Median	410	NA	357	NA	351	NA	358	NA
IQR	378–438	NA	322–423.75	NA	303–398	NA	313–405	NA
Contact relationship to survivor (%)
Sexual contact	NA	NA	NA	1.2	NA	20.8	NA	13.5
Household member	NA	77.7	NA	73.9	NA	64.5	NA	68.6

^*EU denotes enzyme-linked immunosorbent assay units, HIV human immunodeficiency virus, IQR interquartile range, and NA not applicable.

^†Age, body-mass index, and frequency of pregnancy differed significantly between survivors and contacts (P<0.01).

^‡Body-mass index is the weight in kilograms divided by the square of the height in meters.