The health code can only be obtained through vaccination and comprehensive indicators after adding one's daily itinerary. Having a health code and printing it just shows that a person is healthy at this stage, and the health code itself has nothing to do with anyone. For students, unified management by schools and educational institutions has nothing to do with parents' health codes.
Strengthening physical fitness and improving one's strong resistance can protect the body from diseases to some extent. Specific measures should not only enhance health awareness, but also pay attention to the rules of work and rest and strengthen exercise. The main transmission ways to reduce outdoor activities in novel coronavirus are droplet transmission and contact transmission. Therefore, it is a very important link in the process of epidemic prevention and control to minimize outdoor activities during the high-incidence period.