I think with cell phone location tracking? They can tell who was in those locations within that timeframe. Ahem, that would include me, which is why I got the message.
That’s my guess, anyway. I didn’t go to a doctor, but I did check my temperature… I started to get a mild fever by Wednesday, but it went down after taking antibiotics for an infected cyst.
I have concluded that if antibiotics brought down my fever, then the fever wasn’t from a virus. Yay?!