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TheGermDoctor, Doctor
Category: Medical
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Experience:  17 years as a physician, Board Certified in both Internal Medicine and Infectious Diseases
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If a zostavax injection was given intramuscularly instead of

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If a zostavax injection was given intramuscularly instead of Subcutaneous what complications can occur and is the vaccination effective?



There should not be any unexpected complications from getting it IM- you may get fever, and potentially could get a rash similar to the regular dosing. But there is less evidence for efficacy by being given the vaccine IM- it potentially could have bypassed the cells needed to mount a sufficient response, so the efficacy could be lower...


I would be tempted to wait a couple months, then revaccinate properly.


Good luck.


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