To assess immunization levels for children of employees of a large corporation.DESIGN
A mail survey of a random sample of employees on the immunization history of one child per family.SETTING
US employees of Johnson & Johnson.PARTICIPANTS
1500 employees with children born between 1984 and 1991.MAIN OUTCOME MEASURES
Coverage rates for recommended vaccines at different ages up to 6 years.CONCLUSION
Even in this relatively affluent group with good insurance (including immunizations), preschool immunization rates did not reach public health goals. Changing modifiable factors, such as knowing when to initiate immunization, enabling parents to leave work more easily, and improving provider access, might improve preschool immunization rates.