Moderna is struggling to recruit older children for a study to determine whether its COVID-19 vaccine is safe for them, a top health official said Tuesday.
Dr. Moncef Slaoui, who is an advisor of the Trump administration’s Operation Warp Speed, said only around 800 kids have signed up for the clinical trials for ages 12 to 18.
“It’s a real challenge. It’s been already four weeks ongoing,” Slaoui said at a press conference.
He said that it’s “really very…
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