Merck CEO says Covid vaccine won't be a 'silver bullet,' predicts mask use for the 'foreseeable future'

Merck CEO Kenneth Frazier told CNBC on Thursday that drugs to treat or prevent Covid-19 aren’t a “silver bullet” solution to the pandemic. People will need to wear masks and practice social distancing measures well into 2021, he predicted. Frazier said “he’s very optimistic that in the near future” there will be positive results coming from late-stage clinical trials for coronavirus vaccines and therapeutics.