I have never been to Changzhou. How to receive the information from Changzhou epidemic prevention headquarters?

In order to prevent and control diseases, health and epidemic prevention departments at all levels in China often use mobile phones and other communication tools to inform people to pay attention to disease prevention and control. If I get to the area covered by the signal, I may receive a short message from a foreign CDC.

If you receive a call from the CDC, it may be that you have had close contact with a confirmed case or asymptomatic infected person recently, or have had close contact with the case.