donald berwick.nk you for joining us this morning. >> thank you for having me. >> i want to talk to you about the health care workers. many of them have started testing positive for covid-19. how is this impact affecting the actual containment or the ability to combat the disease as it spreads? >> well, our health care workforce deserves great thanks. they're being courageous and sticking with their duties. i admire them imminently. but, yes, there are problems of exposure. they're vulnerable just like any human beings are and we have a shortage of the masks, the downs and other protective equipment that would protect them. in order to take care of the very sick people that fall victim to this disease, we need people very skilled in doing the supportive care that allows people to survive and get through this disease. >> talk to us about this new study from the cdc showing millennials are at a higher risk than actually thought. there was a report from the "new york times" yesterday talking about a stu