According to the "Changtong Code" identification code red and yellow code classification" developed by the Nanchang Epidemic Prevention and Control Emergency Response Command, people who meet the following conditions will apply for the Changtong Code " is a red code after the analysis of big data comparison.

Confirmed cases, suspected cases and asymptomatic infected persons.

Close contacts.

Confirmed cases within 14 days after discharge from hospital.

Fever outpatient observation sampling for nucleic acid test results are not available and other need to stay under observation.

People from Hubei and other heavily infected areas who come to Changchang and return to Changchang (including those who need to be preset as likely to come to Changchang and return to Changchang)