Abstract
Dr DiNicola raises several important points concerning the new varicella vaccine. He questions the reliability of a positive history of chickenpox to be used to exclude an adolescent from receiving the vaccine. Several studies in adults (who usually do not have the benefit of parents' memories) have documented that a positive history of chickenpox is highly predictive of serologic immunity (97% to 99%).1-5 Only 10% of varicella occurs in individuals over 15 years of age.
- Copyright © 1995 by the American Academy of Pediatrics
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