Health Canada has authorized the use of the country’s first variant-targeting COVID booster shot.

The federal health regular today has given the green light to Moderna’s Omicron-targeting vaccine.

Until now, COVID-19 vaccines approved in Canada were for only the original strain of COVID-19.

The new shots, called bivalent vaccines, are designed to recognize specific mutations in the spike protein of the Omicron BA.1 subvariant.

The United Kingdom approved Moderna’s bivalent vaccine two weeks ago, and the United States Food and Drug Administration gave Moderna and Pfizer-BioNTech’s Omicron-fighting shots the green light earlier this week.

Canada has already purchased 12 million doses of Moderna’s version of the Omicron vaccine.

The National Advisory Committee on Immunization recommends that people over the age of 18 should be offered the Omicron booster, but if one is not available they should still get boosted with an original COVID-19 vaccine.