Table 1.

Measles Attack Rates in Infants, New Jersey and Texas, 1990–1992

CharacteristicTotalMeasles Attack Rate (%)PValue*
Maternal year of birth
 1948–19634012.02
 1964–19768833
Mother had measles after delivery
 No11822<.01
 Yes1080
Child age (mo)
 0–55315
 6–115235.047
 12–152335
Exposure duration (h)
 5–155114.01
 16–1687735
Exposure setting
 Day care5816.01
 Household7036
Exposure within 2 days of rash onset of exposing case
 No343<.01
 Yes9435
Breastfeeding at age when exposed
 Yes140.02
 No11430
Mother had measles before delivery
 Yes4719
 No6335.11
 Cannot recall1817
Mother received measles vaccine
 Yes10227
 No1436.26
 Cannot recall128
Mother's race/ethnicity
 White3418
 Black2114.07
 Hispanic7334
State of residence
 Texas9924.27
 New Jersey2934
Child's gender
 Male5621.25
 Female7231
Infant born >3 wk prematurely
 Yes1010.22
 No11828
Infant's birth weight (g)
 <25001520.54
 2500+11327
  • * χ2 test for difference in measles attack rates.

  • Exposed to a confirmed case during the period from 2 days before to 2 days after the rash onset of the confirmed case.