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  • Varicella (Chickenpox)
  • Vaccine Safety

An 8-month-old was erroneously given varicella vaccine. What might the consequences be? What should we do now?

An 8-month-old is likely to have residual passive varicella antibody from his or her mother. The vaccine probably will have no effect, and no action is necessary. The dose should not be counted, and the child should be revaccinated on schedule at 12 through 15 months of age.

Last reviewed: May 16, 2023

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