After having chickenpox, there is usually no need to get vaccinated again for chickenpox. Chickenpox is a contagious disease caused by varicella zoster virus infection, the patient is the only source of infection, mainly through respiratory droplets, direct contact, indirect contact caused by infection. After infection, the clinical manifestations are mainly herpes, crusts and blisters that appear all over the body at the same time. The prognosis is very good with timely isolation, antiviral and supportive treatment. The actual fact is that you can get a long-lasting immunity after getting chickenpox, and generally will not get sick for the first time, even if you come in contact with a certain amount of virus will not be infected. The vaccination is not necessary after chickenpox. As the chickenpox vaccination has been included in the basic prevention program, children have been vaccinated at a relatively young age, so there is no need to repeat the vaccination after getting chickenpox.