This market will resolve to "Yes" if any vaccine has its Biologics License Application (BLA) approval or Emergency Use Authorization (EUA) revoked by the FDA or is voluntarily withdrawn for reasons related to health, safety, or efficacy by December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to “No”.

Withdrawing approval solely due to seasonality, low demand, or an emergency ending will not be sufficient for a "Yes" resolution. Similarly, a reduction in the scope of approved recipients, without fully eliminating the approval will not be sufficient for a "Yes" resolution."

The resolution source will be official FDA announcements and guidance published on the FDA website (see: https://www.cdc.gov/acip-recs/hcp/vaccine-specific/).