dr. andrew berman, a pulmonologist and critical care doctor we just spoke with moments ago. take a listen to what he told me. >> of our sickest patients, most of them are unvaccinated or unknown vaccinated status. it's really clear, the message is get your covid vaccines, get your booster shots. wear your masks, treat this like it was the first wave. don't get comfortable. even healthy people can get very sick. >> reporter: and katy, they're emphasizing those measures, those tools we have in the tool kit even more now because this hospital is getting hit with a one-two punch, more people in their beds, but fewer staff members to care for them because staff themselves are getting sick. they're getting exposed. they're having to isolate, and so that is really putting that strain on the hospital system, and they don't want it to get overwhelmed, really emphasizing those measures more than ever. >> with me now is dr. ezekiel