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논문 기본 정보

자료유형
학술저널
저자정보
Mi-Yeon Park (Jeonbuk Veterinary Service Laboratory) Bo-Mi Moon (Jeonbuk Veterinary Service Laboratory) Su-Jin Gang (Jeonbuk Veterinary Service Laboratory) Jong-Ha Lee (Jeonbuk Veterinary Service Laboratory) Jin-Woo Park (Jeonbuk Veterinary Service Laboratory) Sung-Woo Cho (Jeonbuk Veterinary Service Laboratory) Cheol-Ho Her (Jeonbuk Veterinary Service Laboratory)
저널정보
한국동물위생학회(구 한국가축위생학회) 한국가축위생학회지 한국가축위생학회지 제44권 제2호
발행연도
2021.1
수록면
73 - 83 (11page)

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초록· 키워드

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Although many swine farms continuously vaccinated to sow to prevent Porcine epidemic diarrhea(PED), PED has occurred annually in swine herds in Jeonbuk province, Korea. In the present study, the small intestine and feces samples from 17 farms where severe watery diarrhea and death of newborn piglets occurred in 2019 were collected, amplified by RT-PCR and determined the complete nucleotide sequences of the spike (S) glycoprotein genes of nine Jeonbuk PEDV isolates. The spike (S) glycoprotein is an important determinant for molecular characterization and genetic relationship of PEDV. These nine complete S gene isolates were compared with other PEDV reference strains to identify the molecular diversity, phylogenetic relationships and antigenicity analysis. 9 field strains share 98.5∼100% homologies with each other at the nucleotide sequence level and 97.3∼100% homologies with each other at the amino acid level. The nine Jeonbuk PEDV isolates were classified into G2b group including a genetic specific signal, S-indels (insertion and deletion of S gene). In addition, comparisons the neutralizing epitopes of S gene between 9 field strains and domestic vaccine strains of Korea mutated 12-15 amino acids with SM-98-1 (G1a group) and mutated 0-3 amino acids with QIAP1401 (G2b group). Therefore, the development of G2b-based live vaccines will have to be expedited to ensure effective prevention of endemic PED in Korea. In addition, we will need to be prepared with periodic updates of preventive vaccines based on the PEDV variants for the re-emergence of a virulent strain.

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