In addition to Pfizer and Moderna's new formulas, Novavax's protein-based shot is an option for COVID vaccination this season.

With the approval of Moderna's updated COVID-19 vaccine, doctors are hoping the shots will be available soon and Albertans will opt to roll up their sleeves to get one.

Pfizer and Moderna's legal battle over their rival COVID-19 vaccines will continue after London's High Court on Wednesday gave Pfizer permission to take the case to the Court of Appeal.

Novavax uses a protein-based vaccine strategy, which means people getting the vaccine receive a protein made by the virus that their body’s immune systems then see as foreign and mount responses against. mRNA vaccines, by contrast, include snippets of mRNA genetic material from the COVID-19 virus’ spike protein.

Pfizer Canada says Health Canada has approved its updated COVID-19 vaccine that protects against one of the most recently circulating variants of the virus.