The present invention relates to a vaccine for protecting a pig against diseases associated with porcine epidemic diarrhea virus. The vaccine commonly includes inactivated/killed PEDV (e.g., chemically inactivated PED virus), and/or recombinant PEDV antigen and an adjuvant. Methods for protecting pigs against diseases associated with PEDV and methods of producing the porcine epidemic diarrhea virus vaccine are also provided.