NIH Director 'Guardedly Optimistic' About Vaccine Approval By End Of 2020

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Dr. Francis Collins, director of the National Institutes of Health, is pictured on Sept. 9 on Capitol Hill. Collins says a vaccine would not be approved for emergency use before late November at the earliest.

But Dr. Francis Collins says it's unlikely a vaccine will be approved before late November. He also urges people to trust health experts like Anthony Fauci who "don't really have an ax to grind."

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