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my 24 year old son had a hep A initial shot 8 years ago, but...
my 24 year old son had a hep A initial shot 8 years ago, but did not get the booster. does he need to get the initial shot again?
Interruption of a recommended vaccine series does not require starting the series over again, regardless of how much time has passed (with the exception of oral typhoid vaccine). However, the recommended number of doses are needed to ensure protection.
- Immunization Nurse