The present invention relates to an attenuated strain of a porcine epidemic diarrhea virus, and a porcine epidemic diarrhea vaccine composition comprising the same. Specifically, the present invention relates to an attenuated strain of a porcine epidemic diarrhea virus (accession number: KCTC 12886BP), a vaccine composition and a vaccine comprising the same, a dispenser to administer the vaccine to a pig, a kit comprising the same and a composition for preventing a porcine epidemic diarrhea virus infection, and a method for inducing a protective immune response against the porcine epidemic diarrhea. The live attenuated vaccine and the inactivated vaccine of the present invention are superior in safety and immunogenicity compared to conventional vaccines and are more effective in preventing infections of new strains caused by the genetic variations of the porcine epidemic diarrhea virus, and thus can be used for the purposes of preventing infections of porcine epidemic diarrhea and inducing protective immune responses. In addition, the live attenuated vaccine and the inactivated vaccine of the present invention can effectively reduce the mortality rate of the recent epidemic of the porcine epidemic diarrhea virus, and also can significantly alleviate diarrhea symptoms, thereby minimizing the damage of loss in economic value due to weight loss during recovery from a PED infection which is a concern in swine farms, and thus is highly likely to be industrially applicable since both producers and consumers can be satisfied by the induced stabilization of pork prices.La présente invention concerne une souche atténuée dun virus de la diarrhée épidémique porcine, et une composition vaccinale contre la diarrhée épidémique porcine comprenant cette dernière. Plus précisément, la présente invention concerne une souche atténuée dun virus de la diarrhée épidémique porcine (numéro dordre : KCTC 12886 BP), une composition vaccinale et un vaccin contenant cette dernière, un distribu
