Linda Lew And Michelle Fay Cortez Bloomberg

The disclosure of new Covid variants emerging in China and the rise of a potentially more transmissible strain in the U.K. has recast the spotlight on the ongoing risk of the virus, even as health experts say there's no reason to panic.

The disclosure of new Covid variants emerging in China and the rise of a potentially more transmissible strain in the U.K. has recast the spotlight on the ongoing risk of the virus, even as health experts say there's no reason to panic.