This is an improved version of the COVID vaccine originally offered by Moderna.
This new version contains the genetic information needed to produce two different types of spike proteins, which are components of either the original coronavirus or its BA1 Omicron variant. In turn, relevant antibodies that fights both types of viral spike proteins are produced by our immune system.
Although the bivalent vaccine offers better protection for Omicron variants, it is not yet approved in Canada and the US. So if you are in North America and in need of a booster, you have to think about whether you want to wait, or to get the older jab right away – it’s a hard decision.
Currently, Pfizer is also in the process of developing an improved version, but AstraZeneca has no plans to do so yet.
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