Addendum

Sigh, I’m going to keep my mouth shut for the rest of this pandemic. A customer wrote upset that my post would cause people to be cavalier in their behavior, and that my post could be deadly, literally.

He  sent me this quote which you should take to heart more than my summary of the Science article! (I am not an expert and don’t want to be responsible for any cavalier behavior!)  “I don’t think there’s any question that someone who is without symptoms and carrying the virus can transmit the virus to somebody else,” said Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases.

Social distancing works because it takes the guess work out of whether the people you are around are carriers or not. Be safe.