What you need to know about the new omicron booster shots

Revamped COVID-19 vaccines are poised to do battle with the super-contagious omicron variant.

On September 1, U.S. health officials greenlit the first major update of the mRNA-based shots, reformulated to recognize both the original version of SARS-CoV-2 and the recently circulating versions of omicron. Those mRNA vaccine boosters could start going into arms within days.

“They can help restore protection that has waned since previous vaccination and were designed to provide broader protection against newer variants,” Rochelle Walensky, director of the U.S. Centers for Disease Control and Prevention, said in a statement after endorsing a vaccine advisory committee’s approval of the shots. 

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