KGO ABC World News Tonight With David Muir December 24, 2020 01:36:00
You for having me on. you know, one of the reasons we're discovering these in the uk is because they're doing really extensive testing of their viruses in a way that we are not. so, we don't know if it's in the u.s. or not. it is concerning that we have now several variants that seem to be spreading more easily. but we do need to start looking for it more aggressively here in the united states. >> and are children more susceptible to infection from these mutations that we're seeing? >> there's a lot we're still learning about this. it does appear from preliminary data that kids may be more sus...