After receiving the short message from Shanghai CDC, the nucleic acid was negative. Can I take public transportation?

It is recommended not to take public transport as much as possible.

Under normal circumstances, negative nucleic acid means that the patient is not infected, but it is necessary to follow the arrangement of the local department, and the possibility of infection can be completely ruled out after many negative nucleic acid tests.

Nucleic acid detection is a method to judge whether a patient is infected by virus by finding out whether there is DNA and RNA of invasive virus in respiratory tract samples, blood or feces of the patient, and it is a new standard for infection diagnosis in novel coronavirus.