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J&J (Janssen) COVID-19 Vaccine Stability Update

J&J (Janssen) COVID-19 Vaccine Stability Update

J&J/Janssen has determined that at proper refrigerated storage conditions, the vaccine appears to be very stable across all the lots tested. The company is cautiously optimistic that 6 months total refrigerated storage will be authorized.

The company is hoping to have an extension of the expiration for refrigerated storage of the vaccine to 6 months by early August. PDPH will communicate any updates regarding J&J expiration dates once additional guidance is available.

We ask that you do the following:

  • Continue to use the inventory you have to prevent loss of vaccine
  • Quarantine expired doses as new stability data may become available in the near future
  • Reach out to the health department for J&J ordering in order to optimize vaccine use. Sites are still unable to place orders for J&J directly into PhilaVax at this time.

If you have any questions, please email Thank you for keeping Philadelphia safe and healthy.