What was the prevalence of pediatric chickenpox prior to widespread vaccination?

Updated: Nov 30, 2018
  • Author: Kirsten A Bechtel, MD; Chief Editor: Russell W Steele, MD  more...
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Before varicella vaccine use became widespread, 4 million cases of chickenpox were reported annually. National seroprevalence data for 1988-1994 indicated that 95.5% of adults aged 20-29 years, 98.9% of adults aged 30-39 years, and more than 99.6% of adults older than 40 years were immune to varicella. [4] The disease was responsible for 11,000 hospitalizations each year and approximately 50-100 deaths.

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