People who have had chickenpox are not normally contagious, but those who are immunocompromised and have a weak body resistance may still be contagious. Chickenpox is caused by varicella zoster virus infection, for normal people, chickenpox will form a long-term immunity, usually lifelong, will not be infected again, and will not appear again chickenpox symptoms. If a person’s body resistance is weak, or immunocompromised patients, the immune function is affected, this time if the person who has had chickenpox contact with the chickenpox patient, there is a possibility of being infected. After having chickenpox, it is necessary to pay attention to rest, strengthen nutrition, improve immunity, in order to promote the body to produce protective antibodies. If any discomfort occurs, it is recommended to consult a doctor in time and actively cooperate with the doctor for treatment.