time for the airline industry. >> it's a bad look and i think it's going to be hard to convince customers on the fence anyway that, yeah, you can come back to the sky and not worry about it. >> reporter: in the meantime, aviation analyst david slotnick has good advice for passengers. constantly check your reservations. be almost obsessive about it. get as much early notice of a cancellation as you can so you can act on it very quickly. >> good advice. brian todd reporting live from dca, thank you. u.s. health officials are scrambling to respond to the omicron variant's fast-moving spread across the country. the cdc notably issuing new guidelines for how long infected health care workers should stay isolated at home. cnn's senior medical correspondent elizabeth cohen joins us now. elizabeth, what more are you learning about these new cdc isolation guidelines for health care workers and why they don't apply them to the entire