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Urticaria following varicella vaccine associated with gelatin allergy
S Singer1, C E Johnson, R Mohr
1Department of Pediatrics, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.
Vaccine
|February 13, 1999
Abstract:
An uncommon reaction to varicella vaccine has been urticaria. Based on two reports of urticaria believed to be due to gelatin in recipients of measles-mumps-rubella vaccine, we suspected gelatin as the cause of generalized urticaria in two children after varicella vaccination. Intradermal testing with gelatin yielded a wheal and flare reaction in both children. We conclude that children known to be allergic to gelatin should not receive Oka/Merck varicella vaccine (VARIVAX).