CNN CNN Newsroom With Jim Acosta November 27, 2021 22:07:00
Infection, at preventing spread, and honestly at preventing further mutations. it's a no-brainer to require vaccines for air travel. >> and the prime minister in the uk, boris johnson, says it appears omicron spreads very rapidly, can be spread between people who are double vaccinated, implying that it may evade our vaccines. is it your understanding that that is the case, or do you think it's too early to make those kinds of conclusions at this point? >> i think it's too early. the analogy that i'm using is that we have a smoke alarm that has gone off. there's clearly a fire. but how big of a...