Covid 19 stats website.

Hope that makes sense.
Yes it does. But it is still the internet, and I don't personally know the nurse.
More wild speculation from me:

In a few weeks you will be hard pressed to find anyone in ER who doesn't say those exact things.
There are certain stages people go through when dealing with crap like this. That last is when it becomes self evident.
As in "We hold these truths to be self evident."
In other words, no need at all for proof.