Coronavirus booster shots may have to be taken annually: Dr. Marc Siegel
Fox News medical contributor Dr. Marc Siegel provides insight into coronavirus booster shots.
Centers for Disease Control and Prevention Director Rochelle Walensky gave the final sign off for updated COVID-19 vaccines targeting the omicron strain on Thursday.
BA.5, a subvariant of omicron, is responsible for about 89% of new coronavirus infections, according to CDC data.
The new shots, made by Pfizer and Moderna, are tweaked versions that offer half the original concoction and half to target BA.5 and BA.4.
"They can help restore protection that has waned since previous vaccination and were designed to provide broader protection against newer variants," Walensky said in a statement Thursday.