WASHINGTON (AP) - How would COVID-19 vaccine makers adapt to variants?By tweaking their vaccines, a process that should be easier than coming up with the original shots.Viruses constantly mutate as they spread, and most changes aren't significant.
First-generation COVID-19 vaccines appear to be working against today's variants, but makers already are taking steps to update their recipes if health authorities decide that's needed.RELATED: Booster shots, second-generation vaccines: COVID-19 vaccine makers rush to adapt to coronavirus variantsCOVID-19 vaccines by Pfizer and Moderna are made with new technology that's easy to update.