CMV Seroprevalence by selected socio-demographics among children 3-5 years in the US About 1/3 of children in the study group were +ve for CMV. The highest prevalence rates were among children breastfed and the very low birthweight (P < 0.001). Marginally associated variables were age of the child and race.

Table 2: CMV Seroprevalence by selected socio-demographics among children 3-5 years in the US About 1/3 of children in the study group were +ve for CMV. The highest prevalence rates were among children breastfed and the very low birthweight (P < 0.001). Marginally associated variables were age of the child and race.

Variables (N=519)	% Weighted CMV seroprevalence (95% CI)	P Value
All	31.6 (26.2-37.5)	-
Breastfeeding
No	15.4 (9.9-23.1)
Yes (any)	34.9 (29.0-41.9)	< 0.001
Birthweight (g) *
< 1500	66.4 (50.5-79.3)
1500+	30.2 (24.8-36.4)	< 0.001
Race
White	26.0 (19.9-33.3)
Non-White	36.7 (29.2-44.9)	0.047
Age of Child (in Years)
3	22.8 (14.6-33.7)
4-5	35.9 (29.3-43.1)	0.049
Maternal Age (in Years)
< 28 (mean)	31.1 (22.8-38.5)
28+	32.6 (24.2-42.3)	NS
Day Care Attendance
Yes	37.1 (27.1-48.2)
No	35.0 (26.1-45.2)	NS
Gender
Male	29.2 (22.4-56.5)
Female	33.8 (26.1-42.5)	NS
Family Poverty Index category
1	31.4 (23.3-40.8)
2	32.5 (23.2-43.3)	NS