Regardless of the test accuracy and pts selection, it is obvious that a large percentage of people who are "asymptotic" and are walking around and infecting other people.
As Boston survey indicates, some of these infecting people are working in hospitals, nursing homes, food establishments, etc.,
So far, we know/understand very poorly COVID19. Some "recovered" pts are becoming COVID19 positive again. It appears that it is not clear what does it mean being cured?
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