Health code is positive for a month, how to become negative?

One month after the health code is positive, the nucleic acid can be turned negative. Do two nucleic acid tests within 3 days after being positive, and it will be fine after being negative. If the health code still cannot be changed back to the green code, it is recommended that you contact the CDC in your area to see if there is any problem with the health code system. Yellow code personnel need to complete two nucleic acid tests within three days, and the interval between two nucleic acid tests must be more than 24 hours.