 "A sign reading 'Stay safe' in Regent Street, in London, November 26, 2021. A slew of nations moved to stop air travel from southern Africa on Friday, and stocks plunged in Asia and Europe in reaction to news of a new, potentially more transmissible C")
The head of drugmaker Moderna said COVID-19 vaccines are unlikely to be as effective against the Omicron variant of the coronavirus as they have been against the Delta variant.
"There is no world, I think, where (the effectiveness) is the same level we had with Delta," Moderna Chief Executive Stephane Bancel told the Financial Times in an interview.
"I think it's going to be a material drop. I just don't know how much because we need to wait for the data. But all the scientists I've talked to . . . are like 'this is not going to be good.'"
Vaccine resistance could
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