経けい口こう免めん疫えきけいこうめんえきMeanings1nounoral immunizationMedical term for immunization via the oral route, such as oral vaccines.経けい口こう免めん疫えきは、ポリオワクチンなどで用もちいられる方ほう法ほうです。Oral immunization is a method used for vaccines such as the polio vaccine.