I really think it was in the US before December. Between the 2nd week of December and the end of January, my family of 4 had NINE illnesses (2 each for me and the 2 kids, 3 for hubby). One of those had a very distinct dry cough and fever and we were extraordinarily tired, and it didn't seem to affect the kids at all...we commented on how much fun they were having taking advantage of us being so run down. If memory serves, that particular illness was around the 2nd week of January and lasted about a week. (ETA: We've NEVER had that much illness in a single year, let alone all clumped together like that.)
Also, (and I don't want to scare you
@21stamps) her post about her pneumonia reads suspiciously like Covid-19...and she's still recovering.
Google and Reddit apparently teamed up for their Covid-19 map...you can zoom in to particular buildings.
https://www.google.com/maps/d/u/0/viewer?mid=1yCPR-ukAgE55sROnmBUFmtLN6riVLTu3&ll=42.16063711438743,-70.7910235392497&z=18&fbclid=IwAR1iTWJsaM1bfh5k6PqFQ_dF1Rv-AZ3xL_8PeY111GxIqT_mIEFTX1Of2KA
That Dr. Burke (who appears with the president and his cohorts during the task force updates) and the governor of MA both felt it was necessary to mention millennials and young people when discussing how important it is to cancel play dates and get-togethers was both terrifying and hilarious at the same time.