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Study: One Dose of Chicken Pox Vaccine Not Enough

A study in this week's New England Journal of Medicine finds that the chicken pox vaccine is less effective than previously thought. The results suggest that more than one dose of the vaccine may be needed. NPR's Patricia Neighmond reports.

Copyright 2002 NPR

Award-winning journalist Patti Neighmond is NPR's health policy correspondent. Her reports air regularly on NPR newsmagazines All Things Considered, Morning Edition, and Weekend Edition.