What disease does the attenuated Japanese encephalitis vaccine prevent?

Japanese encephalitis live attenuated vaccine is a specific immunization method used for the prevention of Japanese encephalitis (also known as epidemic encephalitis B). Japanese encephalitis is an acute infectious disease of the central nervous system caused by the Japanese encephalitis virus. It is primarily transmitted through mosquito bites, especially prevalent during the summer and autumn seasons. This disease can cause severe damage to the body and may lead to central nervous system infection. Early symptoms include fever, poor mental status, seizures, and impaired consciousness, potentially resulting even in paralysis or intellectual disability. The Japanese encephalitis live attenuated vaccine produces immunological memory against the Japanese encephalitis virus in the body through injection of the attenuated live vaccine, thereby reducing the incidence of Japanese encephalitis. It is generally recommended to administer the Japanese encephalitis live attenuated vaccine at around 8 months to 1 year of age, at 2 years of age, and again around 6 years of age, in order to achieve effective reinforcement and prevention.