The yellow code of health code is only a risk warning to people related to the epidemic situation, and people with yellow health code need not be too nervous. The yellow code doesn't mean they will be infected. At this time, they only need to complete the nucleic acid detection and turn it into a green code as soon as possible, so as to reduce unnecessary going out and waiting for the negative result to turn green.
Whether the family members of the yellow code personnel need to be isolated depends on the situation. If the family members of the yellow code live with themselves and do have high-risk contact, it is better to suggest that the family members be isolated together, especially when they have symptoms such as fever, because the family members will also be at risk of infection at this time.
However, if the yellow-coded personnel have not been in contact with people suspected to be diagnosed with COVID-19, have not been to areas with high epidemic risk and have no fever symptoms, then there is no need to isolate them at this time, and their families will not be affected.
Just because the health code is yellow doesn't mean you are infected with COVID-19 virus.
If the yellow-coded personnel who are personally contacted are not infected with COVID-19 virus and have no symptoms such as fever and cough, there is generally no danger. At this time, the personal health code will not turn yellow, so don't worry too much.
However, if the person who comes into contact with the yellow code has fever or has been diagnosed, then the person who comes into contact with it also needs to be observed in isolation.