Expiration Dates

Determining when a vaccine or diluent expires is an essential step in the vaccine preparation process. 

Always verify the vaccine’s and diluent’s expiration dates before beginning the preparation process. NEVER administer expired vaccine or diluent. 

Follow the manufacturer’s guidance to determine the expiration date. 

  • Expiration dates may be updated based on additional data from vaccine stability studies. 
  • Expiration date is on the vaccine vial.
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CDC COVID-19 Vaccine Expiration Date Tracking Tool

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Page last reviewed: October 8, 2021