What does health code mean?
Wuhan will give gray code management to the health code of the person who should be tested for nucleic acid. At present, two types of people will be given "Gray code": one is from other provinces (back to Han) and has not carried out nucleic acid testing twice every three days in time; The other is people who have not carried out nucleic acid testing within 48 hours.
The above is an introduction about the meaning of health code Gray code. This is the latest color health code recently launched in Wuhan. When other provinces come to Wuhan, if they don't do nucleic acid in time, it becomes a gray code.