Health Canada expected to change Pfizer doses from 5 to 6 — but is that reasonable?

Facing a vaccine shortage, Health Canada is expected to change the number of doses in a vial of Pfizer-BioNTech vaccine from five to six — but that comes with some logistical challenges. Julia Wong explains.

• Pfizer expects US$15 billion in sales from coronavirus vaccine this year
• Pfizer vaccine label changes could force Canada into global syringe race
• Pfizer’s vaccine shipments to Canada already based on 6 doses per vial