Table 1.

Characteristics of DENV-infected cohort and contact children, Thailand^*

Description	DENV-infected cohort children, n = 189	DENV-infected contacts, n = 126†
Median age (range)	9 (5–13)	9 (0–15)
Sex
M	92 (48.7)	68 (54.0)
F	97 (51.3)	58 (46.0)
Fever history	189 (100)	83 (65.9)
Serologic category
Primary	13 (6.9)	23 (18.3)‡
Secondary	176 (93.1)	103 (81.7)‡
Dengue PCR positive	147 (77.8)	43 (34.1)
Virus serotype
DENV-1	69 (46.9)	22 (51.1)
DENV-2	20 (13.6)	3 (7.0)
DENV-3	4 (2.7)	2 (4.7)
DENV-4	54 (36.7)	16 (37.2)

^*Values are no. (%) unless otherwise indicated. DENV = dengue virus; PCR = polymerase chain reaction.

^†Includes 119 contacts from positive clusters and 7 from negative clusters.

^‡Variable timing of blood collection after infection in contacts makes this categorization less certain.