re: Louisiana COVID-19 - November 13, 2020 Update: +3492 cases; +24 deaths; +16 hospitalized

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I feel like after this spike, we are going to be nearing heard immunity.

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The questions I have yet to see answered is:

Will heard immunity mean the stop of the spread; or people will still be carriers, but will just have no (to little) symptoms

Is it possible to catch this 2-3 times if it keeps mutating? And why aren't mutations considered a new virus?