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Title
Chickenpox outbreak in a highly vaccinated school population.
Authors
Tugwell, Barna D; Lee, Lore E; Gillette, Hilary; Lorber, Eileen M; Hedberg, Katrina; Cieslak, Paul R
Abstract
We investigated a chickenpox outbreak that started in an Oregon elementary school in October 2001, after public schools began phasing in a varicella vaccination requirement for enrollment. We sought to determine the rate of varicella vaccination and effectiveness and risk factors for breakthrough disease.