NACI added that anyone above 6 months of age who isn't considered high risk "may receive the most recently updated vaccine in the fall of 2024." The organization recommends a six-month interval between COVID vaccines, "with a minimum of three months from the last dose."

Health Canada has authorized Moderna's updated COVID-19 vaccine to roll out in fall immunization campaigns. The new Spikevax formula targets the KP.2 subvariant, one of the latest offshoots of the Omicron variant of the virus that causes COVID-19.