https://apnews.com/ea635d3e28d208ab1e4083537506bb99

Vaccine makers are racing to update their COVID-19 shots against the newest coronavirus threat even before it’s clear a change is needed, just in case.

Experts doubt today’s shots will become useless but say it’s critical to see how fast companies could produce a reformulated dose and prove it works -- because whatever happens with omicron, this newest mutant won’t be the last.