In a trial involving 13 000 adults, the vaccine demonstrated an efficacy rate of 64.7% against symptomatic COVID-19, and 72% efficacy against infections specifically caused by the Omicron variant.
“Sanofi-GSK’s vaccine is the first candidate to demonstrate efficacy in a placebo-controlled trial in an environment of high Omicron variant circulation,” Sanofi said in a statement. Earlier this month, the bivalent vaccine showed potential in two trials to protect against the virus’ main variants of concern – the Omicron BA.1 and BA.2 strains – when used as a booster shot.
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