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If someone receives a dose of varicella vaccine and then develops a rash, does the person need the 2nd dose of vaccine?

April 26, 2017develops dose person rash vaccine varicella

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If someone receives a dose of varicella vaccine and then develops a rash, does the person need the 2nd dose of vaccine?

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A post-vaccination rash could be either vaccine-associated or the result of a pre-vaccination exposure to wild varicella virus. (Or it could be something else entirely.) Unless you are absolutely positive the rash was wild-virus related (i.e., a case of chickenpox), we recommend that you give the second dose on schedule. When in doubt, vaccinate.