Fast local quarantines and such as you are describing are great, if you catch it early. If strong measures are taken before it spreads, it is reasonable to quarantine all sick and people in contact with the sick. Taiwan was able to do this, and has had only minimal cases and minimal disruption. There is community spread basically everywhere now, so it is too late for local measures. It's almost as if people should have been listening to public health experts in January when it was clear where this was heading.
