Limited Supply of Pfizer COVID-19 Vaccine


Due to a delay in shipment, the Pfizer-BioNTech COVID-19 vaccine is in limited supply in Ontario.

As a result of the limited supply, clients 30 years and older will receive the Moderna COVID-19 vaccine. Pfizer vaccines will be reserved for individuals 12-29 years, for its lower risk for pericarditis or myocarditis. Both vaccines are safe and effective to receive as a third dose, regardless of what the first or second doses may have been, and clinics will continue to vaccinate all eligible individuals with appointments. The pediatric Pfizer dose supplies are not affected by this shortage.

“Especially with the Omicron variant spreading rapidly in communities, the best option for your third dose is the first one available to you.” reminds Dr. Paul Roumeliotis, Medical Officer of Health at the EOHU. “No matter what your first and second doses were, a third dose of any mRNA vaccine will increase protection from the virus.”

Eligible clients can book a first, second or third dose appointment through the Provincial Booking System at or by calling 1 833 943 3900. Appointments are added as vaccine supply becomes available, and clients are asked to check the booking system regularly for available appointments. Participating pharmacies and healthcare practitioners are also offering COVID-19 vaccination.