sensitivity. you can have a false negative that can give you a false sense of confidence. >> joining us now, assistant professor of emergency medicine at st. joseph's regional medical center and merge medicine doctor dr. nathan swanson. thank you so much for joining us here. we've heard the nation is seeing record covid cases. there's a question of the effectiveness of tests and the availability of tests and new concerns concerning the emergency guidelines. tell us what you're seeing at the hospital in terms of the surges. how are you preparing for the spike that's come and perhaps a bigger one that's ahead? >> it's a bit of a bleak picture right now especially where the surge has already hit. we are quite overwhelmed in general, and it's a combination of patients who are very sick from covid, patients who are