I'm not certain of the December 2019 date as the earliest time it was traced to either. I was told by a healthcare tech, that critical care people (like me) were testing negative for the flue back in November. Even though they had flue symptoms. I'm a little nobody. She had no reason to lie to me...and is not a dummy either.I saw this too, and this is one of the many things that makes me wonder how many people all over the world have been exposed. Actually, a better question might be how many people world wide have NOT been exposed. Probably an easier number to count.
5 million people in and out of ground zero over 6 weeks after this bug is known to have been out and circulating around the population. I'm pretty certain that a large number of those people brought some hitchhikers home with them.