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A member asked:
How soon before travel should the hepatitis a vaccine be given?
A doctor has provided 1 answer
The HepA schedule.: Calls for two doses of vaccine separated i. Time. Immunity begins to develop 2-4 weeks after immunization. Therefore vaccination should be given at least this far in advance to confer protection. Once established, immunity is estimated to last 15-25 years.
Answered 9/14/2013
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