Dr. Anthony Fauci is speaking about the new BA.2 variant, emphasizing just how transmissible it is.

"It has a degree of transmission advantage over the original Omicron, but not multifold advantage," says Fauci. "So, it's about 50 to 60% or so more transmissible, which means ultimately, over time, it might take over as the dominant variant."

Fauci adds he's watching the spike of COVID-19 cases in Europe, and while it is spreading fast there, cases do not appear to be as severe.