If you extrapolate from the 5 or so ambulance guys, with the 26th Presbyterian visit, there are probably 50 health care workers in isolation right now because of this guy.
Nobody's in isolation.
The contacts should be in quarantine, but, if they are, I bet it's "voluntary home quarantine".
IF - and I should emphasize, NOBODY knows what's about to happen, but IF cases start popping up among HCWs and their families in Texas, then the s*** is most definitely going to hit the fan.