On Thursday of last week, this hospital had their first several confirmed positive cases. Keep in mind that in the early days of this, the criteria for testing in the US has been "you are already very sick and you require hospitalization for something with similar symptoms"
On Tuesday of this week, as tests became more available, that hospital had ~20 suspected and confirmed cases.
On Wednesday they were at 22 confirmed cases and 22 suspected cases where people are sick enough to require hospitalization but test results haven't come back yet.
Last week, the hospital was dealing with normal load and on standby should this become a problem. In the space of a little over a week, they now have a floor devoted to patients who are a) sick enough to require hospitalization and b) have tested positive and another floor devoted to patients who are a) sick enough to require hospitalization and b) are presumed to have this based on symptoms presented, pending test results.
It's just one facility, but I personally cannot look at a single hospital that had zero known cases last week, which now has two floors devoted to active cases this week and comfort myself with, "It's fine, this is just the flu."