Vaccination Information

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This information is about preventing or responding to smallpox. For the latest information about the current mpox outbreak, including information on symptoms, prevention, and vaccines, please visit CDC’s Mpox site.

Vaccines
Contraindications to Vaccination
Vaccine Administration
Expected Vaccine Reactions
Vaccine “Take” Evaluation
Vaccine Adverse Events
Medical Management of Adverse Reactions
Comparison of Reactions for First-Time Vaccinees and Revaccinees
Examples of Major or “Take” Reactions to Smallpox Vaccination
Vaccine Adverse Reaction Images