Moderna and Pfizer/BioNTech are working on “bivalent” vaccines that combine original COVID spike proteins with those from Omicron. These will help remedy the structurally silly situation that prevails today, where we’re vaccinating people with a COVID variant that was outcompeted a long time ago (early 2021). While there are nuances (Omicron appears to generate less cross-immunity than the original strain), updating the spikes as is currently proposed will almost certainly yield better immunity against current COVID variants.

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