the spread, washington, d.c.' mayor is reinstating an indoor citywide mask order after lifting it only a few weeks ago. the district is seeing its highest daily count since it began. this new measure goes into effect tuesday and lasts until the end of january. cnn, new york. >> so let's bring in a cardiologist and professor of molecular meds at scripps research. he joins me now from la jolla, california. thank you for all you do and for talking with us. >> good to be with you again. >> thank you. the omicron is now the dominant variant making up 73% of all new cases. what does that tell but this variant? and what lies ahead considering less than 20% of americans have that third covid shot to protect them. >> that's right. so this shot up exceptionally