'This is monumental'—Cramer on the U.K. approving Pfizer's Covid vaccine for general use

The U.K. on Wednesday authorized the Pfizer-BioNTech vaccine for emergency use, marking another step in the global battle against the pandemic. The vaccine will now be rolled out in the country next week, with elderly people in care homes and medical workers first in line. CNBC's Jim Cramer and David Faber discuss the news and how the rollout of a vaccine might work.