?:abstract
|
-
Less than 8 months after establishing a collaboration to develop a vaccine for COVID-19 , Pfizer and BioNTech have declared success An ongoing Phase 3 study of more than 43,500 people showed that the vaccine was more than 90% effective at preventing COVID-19—significantly exceeding the US Food and Drug Administration’s approval requirement that any vaccine be at least 50% effective It’s the first announcement of a successful late-stage trial from hundreds of groups racing to develop a vaccine “This is great news,” says Norbert Pardi, a messenger RNA (mRNA) vaccine scientist at the University of Pennsylvania “We need to see more data, but we definitely have reason to be optimistic ” The news comes amid record-breaking numbers of daily cases of COVID-19 in the US, which has already seen more than 230,000 deaths from the virus But the results carry several important caveats Because the announcement was made in a press [ ]
|