Health Canada approved use of the Pfizer\u002DBioNTech COVID\u002D19 booster vaccine that targets the BA.4 and BA.5 strains of the Omicron variant.
Dr. Supriya Sharma, the chief medical adviser, said the combination vaccine from Pfizer-BioNTech that targets both the original coronavirus and the BA.4 and BA.5 strains of Omicron can now be offered to Canadians who at least 12 years old.Sign up to receive daily headline news from the Ottawa SUN, a division of Postmedia Network Inc.By clicking on the sign up button you consent to receive the above newsletter from Postmedia Network Inc.
Canadians can get the shot as early as three months after their most recent booster, but Sharma said she wouldn’t recommend doing it sooner than that. She said doses too close together can limit the effectiveness of the extra dose. While 81 per cent of all Canadians have the first two doses of a vaccine, only 49 per cent followed advice to get a third dose, and 13 per cent followed up with the recommendation to get a fourth dose.Article content
Sharma said there isn’t a lot of difference between the results of being boosted with one or the other, even though BA.4 and BA.5 are the dominant strains in circulation now. Sharma said it’s not really clear yet how infection rates will be affected as the new booster rolls out because there are so many different strains circulating.We apologize, but this video has failed to load.“I think it’s really an interesting kind of place in the pandemic, where we haven’t been before there’s a bit of a variant soup out there,” said Sharma.
“Evidence continues to show that original mRNA vaccines provide good protection against serious illness and hospitalization,” he said.
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