Generally speaking, contact with yellow code will not become yellow code. The health code does not change after exposure, but changes according to the time limit. Residents in low-risk areas go to medium-high-risk areas and stay for an hour. Their mobile phones are turned on, and then the health code will turn red or yellow.
Among residents in fixed risk areas, the health code of residents in high risk areas is red, the health code of residents in medium risk areas is yellow, and the health code of residents in low risk areas is green.
Matters needing attention in home isolation
Users are advised to live alone, but if they need to share with people without relevant conditions, it is recommended to live alone in a well-ventilated bedroom and close the door. If the conditions do not allow, other family members should keep a distance of at least 1 m from the segregator and try to avoid close contact.
It should be noted that the isolator needs to prepare a special trash can to store discarded paper towels and masks. Before discarding, they need to spray disinfectant until the garbage bag becomes wet, then tie it up and throw it into the trash can.
The above contents refer to Baidu Encyclopedia-Health Code.