Those who had an allergic reaction to their first shot of an mRNA COVID-19 vaccine can safely receive future doses of the same product or a different mRNA vaccine, says Canada’s vaccine advisory committee.

While rare, there have been reported cases of individuals experiencing severe and immediate allergic reactions to a first dose, said the National Advisory Committee on Immunization (NACI).

After reviewing evidence from recent studies, NACI said it found that most people who experienced an immediate allergic reaction did not have a similar reaction when receiving a second dose.

Previously, NACI had been recommending against “routinely” offering second doses to those who had severe allergic reactions after their first