welcome to HCM
thanks for the query
its not compulsory.
is recommended for travelers who plan to spend a month or longer in areas where JEV infection of pigs occurs during the time of year when they will be travelling
risk of JE varies based on destination, duration of visit, season of the year, and planned activities, travelers and their healthcare providers will need to weigh the overall risk for travel-associated JE, the high morbidity and mortality when JE occurs, and the low probability of vaccine-associated adverse effects