A yellow code is a health condition in which the NGS vaccination data verifies that there is no abnormality, but the field temperature measurement is abnormal, meaning that the body temperature is over 37.3. This condition usually requires a 7-day quarantine.

During the epidemic, "red code" and "yellow code" personnel cannot pass, and should be medically treated or observed according to the requirements of the epidemic prevention and control department; "green code" personnel with normal body temperature can pass. The "green code" personnel can pass.

Since 2020, the Health Code has been more accurate and scientific about returning to work and returning workers back to work. Online self-declaration, the background audit, you can generate belong to the personal two-dimensional code. "Code" travel has become a national **** knowledge, green QR code has become a necessity for people to travel.

Generally the following: body temperature of 37.3 ℃ and above or respiratory symptoms (dry cough, cough phlegm, nasal congestion, sore throat, shortness of breath, dyspnea), physical discomfort (fatigue, muscle aches, headache, joint pain), digestive symptoms (abdominal pain, diarrhea, nausea, vomiting), conjunctival hemorrhage and other one of the clinical manifestations. People from areas at high risk of outbreak. 14 days may have close contact with confirmed patients, suspected patients and asymptomatic infected people, such as riding the same public **** transportation, living in the same building unit; other people who need to be included in the yellow code management.