How can scientists update coronavirus vaccines for omicron?

Medical Xpress December 3, 2021
Deborah Fuller, The Conversation

If the omicron variant of the coronavirus is different enough from the original variant, it’s possible that existing vaccines won’t be as effective as they have been. If so, it’s likely that companies will need to update their vaccines to better fight omicron. Deborah Fuller is a microbiologist who has been studying mRNA and DNA vaccines for over two decades. Here she explains why vaccines might need to be updated and what that process would look like.

1. Why might vaccines need to be updated?

Basically, it’s a question of whether a virus has changed enough so that antibodies created by the original vaccine are no longer able to recognize and fend off the new mutated variant.

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