When a train passes through an epidemic area, it means that it passes directly through the epidemic area without stopping, getting on or off the bus in the epidemic area, and there is no process of contact and exposure with possible locals or articles. It is not a road, but just a passer-by. If you get on or off the bus and have contact and exposure with local people or articles, you need to conduct self-isolation and nucleic acid detection during this period.
It will take 4 hours to record in the epidemic area, and the health code will be marked with an asterisk. Even if the health code does not change color, it is necessary to detect isolation. If the health code has turned yellow or orange, it should be isolated for 7 days or 14 days. During this period, two nucleic acid tests should be carried out, and the time interval between them should be more than 72 hours, and both times are negative, so that the health code will return to its original green color.
"Communication Big Data Travel Card" analyzes the signaling data of the mobile phone and obtains it through the location of the base station where the user's mobile phone is located. The collection, transmission and processing of signaling data are highly automated, with extremely strict security and privacy protection mechanisms and high authenticity and accuracy.
The "Communication Big Data Travel Card" service uses base station data. In order to ensure continuous communication and achieve no blind area coverage, the signals of base stations in the two places at the junction of administrative divisions may cross-cover, resulting in deviation of results. In addition, staying in a city for less than 4 hours will not be recorded. Overseas travel records require you to use international roaming service when you are abroad. If the result is seriously deviated, please contact customer service in time.