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A 27-year-old male asked:

How many days after the pneumovax vaccine are you safe from a severe allergic reaction?

1 doctor answer1 doctor weighed in
Dr. Kathy Robinson
Family Medicine 33 years experience
Hours not days: Any severe allergic reaction would happen within minutes to hours after an injection. More minor reactions like soreness or swelling at the site or a rash would happen within 2-3 days.
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Last updated Oct 19, 2016
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