The Pfizer vaccine is in short supply in Ontario and is being reserved for individuals aged 12 to 29. If you are older than 29 years, you will very likely be given the Moderna vaccine. The clinical advice to everyone is to take Moderna now as your third shot since the shortage of Pfizer may last until at least the end of January. Please see Toronto Public Health’s information sheet on the Benefits of the Moderna Spikevax mRNA Vaccine for People Age 30 and over.
If you have any questions, please talk to your healthcare provider.