So - I really don't see how we need to be "trained" to screen people.
We already do that. We already triage people.
-"You're fine, go back to class"
-"You should go home and let mom and dad take care of you at home"
-"You are sick and need to be seen by a doctor"
- "You are really sick and need to go to the hospital"
OR we provide necessary interventions until EMS arrives
We already do this people and this situation is really not any different. I can't tell someone if they have strep but I can tell them if it's something that should be checked into further.
In this case we just add a few extra questions:
Where have you traveled in the last 14 days?
Have you been in close contact who has tested positive?
Other than that we are all still checking the same things: temperature, respiratory status, symptoms, medical history
From there, we already know how to shuttle them in the right direction.