A member asked:

Think it was safe to be given a shot of hep b vaccine that was not refrigerated for 2 hrs just prior to injection? can i get another shot right after?

A doctor has provided 1 answer

Yes,yes: There are studies showing that the vaccine retained its potency after more than a week at normal human body temperature. www.ncbi.nlm.nih.gov/pubmed1534639.the storage at 36f to 46f is recommended but warming to room temperature before use decreases the discomfort to many patients.

Answered 1/22/2014

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A member asked:

Should a hep b vaccine injection site yellow?

A doctor has provided 1 answer