michael minna, assistant professor at harvard school of public health and a core member of the harvard center for communicable disease dynamics. doctor, because of all the bona fides i just read aloud, i'd like to begin with you and specifically your reaction to this stay-at-home order for 40 million souls in the state of california. >> i think that it's the right thing to do at this point in time, in particular in the absence of good testing and widescale testing. we don't really know where we are in the course of this epidemic, so these what seem like somewhat extreme measures are actually the one way that we really know we can stop the fast transmission of this virus that seems to be really sweeping across the globe. >> people are already asking questions as people are eager to do. if california is doing this, does that mean almost by association that new york city, such a dense, concentrated, urban center, should be doing that same thing at minimum? >> i think new york city probably should be. i mean it's an extraordinarily dense city as you say, and this virus is very likely to tr