You should stay close to only the family members or group that you’ve been in contact with for the past 10 days, he said in an interview on CNN.
“We are looking much worse than what we were at Thanksgiving, much worse. And so now the risk is much higher,” Bromage said. “And you got away with it at Thanksgiving because you were lucky it didn't come into your home. If you do this again…you're chancing too much fate at this stage bringing it into your house.”
Bromage also explained the “Swiss cheese model” of protection from the coronavirus.
“No one protective layer is 100% effective,” he said. “Masks plus distance is additive in regards to its safety. If we're in well-ventilated spaces, that adds another layer of safety. … We make sure that we put as many layers as possible between each person in order to stop the spread of infection.”