The reasons for not displaying are as follows:
Information delay: At present, booster shots of COVID-19 vaccine are being inoculated all over the country, and the number of people vaccinated is relatively large. After vaccination, the working population needs to upload the information to the health code. This process will take some time. If the booster injection of COVID-19 vaccine is not displayed on the health code, the information may be delayed. I suggest waiting for a while.
Incorrect information input: All vaccinations are carried out in the real-name registration system, so it is convenient to input personal information in the system to find vaccination records in COVID-19. If the information is entered incorrectly during vaccination, the vaccination information may not be displayed on the health code. At this time, it is recommended to contact the relevant staff for handling.