Looking at the time frame of how long to wait incubation is 14 days no signs for 7 or so days. The minimum safe time after last known case is 3x the incubation time of 14 so 42 days. This does not count of the virus/ bacteria can live outside a host body for longer.
Problem will become and always is news real reliable news not the shit spoon fed us by propaganda macHines. Without proper info you can not make sound decisions. I think 100 miles is too close because that means it had 10 days to get the 100 miles to you. You are reacting to a too late scenario. Also doctors are not gods they fuck up all.the time so misediagnosis is a very real issue.
Now add to that this stupid mix of sjw woke and cancel idiots and pressure some fear like too white a group fighting virus and let’s say a migrant group has infections that either go un reported due to their fear of going to hospital until desparate and doctor not wanting to be called a ist or ism for pointing out the obvious.
Now add the open sewer of LA and sanfransico and massive homeless people who are already not in best health mix and you will get a nasty nasty surprise.