Never left home. Why did you receive the track crossing information from the epidemic prevention center?

As long as you are sure that you have no epidemic area, but you still keep sending you messages, there are only two possibilities.

First, it was sent wrong.

One is that the system sends these messages to everyone to remind them.

Or someone stole your number. This is the result of large-scale system analysis.

Although you haven't been directly to the place mentioned by the CDC, you have an intersection with people who have been there. The big system will automatically determine that you are a close contact with this epidemic and contact you. The CDC says you've been to a place you haven't been to. Maybe your relatives went out with your mobile phone, so it shows that your action track has been to that place.