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kboy-
Sorry. Virus RNA (its structural molecules) are detected by a method called PCR. But the fact that the virus building blocks are present doesn't automatically mean that there are actual viruses capable of infecting another person there. When they went through the diamond princess cruise ship they found virus RNA on surfaces in the ship's cabins almost a month after all the passengers had left, for instance.
russmeyer
Well, there is the occasional cough still. So not completely. But I feel fine and any other time in history I wouldn't have thought anything of it. Also, detecting virus RNA isn't the same as me having viable viruses in my nose, it's impossible to know.