How long can the second dose of the attenuated Japanese encephalitis vaccine be postponed?
Disease description:
My child is about to turn two years old and is due for the second dose of the live attenuated Japanese encephalitis vaccine. However, due to recent physical discomfort and epidemic control measures preventing us from going out, I would like to ask how long the second dose of the attenuated Japanese encephalitis vaccine can be postponed.
Doctor's answer (1)
Dr. Zhou Xiaofeng
In certain special circumstances, such as when a child develops fever or infectious diseases, the administration of the second dose of the attenuated Japanese encephalitis vaccine can be appropriately postponed. The following guidelines for postponement are recommended:
1. Short-term postponement: Generally, if postponement is needed due to temporary physical discomfort, it can be delayed for 1 to 4 weeks upon a doctor's advice.
2. Long-term postponement: If a longer postponement is required due to chronic illness or special circumstances, although there is no strict maximum limit, it is advised not to exceed six months. Excessively long delays may affect the vaccine's protective effectiveness, leading to low antibody levels in the child's body and thereby increasing the risk of Japanese encephalitis virus infection.
During the postponed vaccination period, parents should closely monitor the child's health condition and administer the vaccine promptly once conditions allow.
