irvin redlenner with us. he advises us on public health, and he's a professor at albert einstein college of medicine. how concerning is the increase among children as a subgroup. and my second part of my question, i thought this would be the safe thanksgiving. >> well, brian, this is really interesting and not totally safe. this is not 2018, when things were all just hunky dory, and it's not three or four years from now, when everything will be pretty much back to normal. we're seeing many more cases happening during this winter season. a massive outbreak and problems