Can the health code of epidemic area change color by train?
The green code will not change color when passing through the epidemic area by train. Health code password does not collect personal location information, but identifies health status according to the data of authoritative departments. If you just pass through the epidemic area, the health code will not change color.
The discoloration of the health code is based on the physical condition of the holder, whether he is a close contact of COVID-19, a confirmed patient, a suspected COVID-19 patient and an asymptomatic infected person.
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