Agreed, when a new novel virus comes out, it's prudent to minimize spreading it early on through locking down the impacted regions as needed.  At least until its virulence can be determined, if it turns out to be like airborne Ebola where anyone getting it, where even surviving the person needs medical assistance for life. Once it was found to be little more than the flu, there's no more reason to keep much of anything locked down, especially after it's already spread world wide.