F.D.A. Agrees Moderna Can Increase Vaccine Supply in Each Vial – The New York Times (specialized needle may be in short supply)

Regulators allowed Pfizer to relabel its vials as containing six doses instead of five, so Pfizer is now getting credit for delivering more doses than before, though the amount has not changed. Six doses can be extracted if health practitioners use specialized syringes, and federal and state officials say that equipment is now included in each shipment of Pfizer vaccine.

Some health practitioners say the same ambiguity exists with Moderna’s product. While the vials are labeled for 10 doses, they have sometimes been able to draw out an 11th dose using specialized syringes.