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A record audit of 254 children attending a public clinic in Los Angeles was conducted to assess immunization levels prior to a measles outbreak in the community. Coverage with all vaccines appropriate for age decreased from 67% at 3 months to 25% at 19 months. Delay in initiating vaccination was associated with increasing risk for delayed measles-mumps-rubella vaccine beyond age 2 years (P less than .05). In one third of children, health care providers missed an opportunity to administer measles-mumps-rubella vaccine. Recall systems and elimination of missed opportunities may increase vaccination levels in clinic populations. Record audits should be considered for use in guiding the management of immunization programs.
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Farizo et al. (1992) studied this question.
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