Due to the new change of health code, the sampling sign of Shandong health code is not displayed. The original "4d" and "7d" marks in the column of "nucleic acid detection" in the lower left corner are missing, and "negative X days" and "X days" are directly displayed as the days after the last nucleic acid detection.
"Health Code" is a tracking and judging system for personal health information and activity information used for epidemic prevention and control in COVID-19. Individuals declare online by themselves, and generate a personal QR code after background audit, which can be declared once as an individual in a certain area of the electronic certificate.