At least one hospital ER locked the front door and set up a tent triage just for that purpose. It does seem to be the only way to avoid all hospitals from becoming contaminated.
No kidding? I hadn’t read that. For most health care facilities, the main protection is Thou Shall Not Pass into the interior.
Getting your facility shut down, people avoiding your facility, decontamination, health care workers quarantined etc. etc. Many facilities simply couldn’t survive the hit.