People who hold the yellow code of the health code cannot be vaccinated, because at this time you may be infected by a confirmed case or asymptomatic infected person, and you need to hold a green code to be vaccinated. At this time, vaccination may have adverse phenomena. The bivalent vaccine needs to wear a mask correctly throughout the whole process. People with unhealthy code yellow and red, people in closed control areas, people in medium and high risk areas and people in medium and high risk positions are advised to abide by epidemic prevention and control regulations and do personal protection.