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. 2016 Aug 30:192:90-94.
doi: 10.1016/j.vetmic.2016.07.003. Epub 2016 Jul 7.

Wild boars harboring porcine epidemic diarrhea virus (PEDV) may play an important role as a PEDV reservoir

Dong Uk Lee  1 , Taeyong Kwon  1 , Sang H Je  1 , Sung J Yoo  1 , Sang Won Seo  2 , Sun Young Sunwoo  3 , Young S Lyoo  4
Affiliations

Wild boars harboring porcine epidemic diarrhea virus (PEDV) may play an important role as a PEDV reservoir

Dong Uk Lee et al. Vet Microbiol. .

Abstract

Porcine epidemic diarrhea virus (PEDV) is a burdensome pathogen in the swine industry. Wild boar population poses a high risk for reservoir of viral pathogen. Two hundred eighty seven samples from wild boar (Sus scrofa) collected in South Korea during 2010/11 were analyzed using RT-PCR, revealing a PEDV infection rate of 9.75% (28/287). PEDV positive samples were distributed throughout the mainland of South Korea, clustering at the northern border adjacent to the Demilitarized Zone (DMZ) and in mountainous regions. PEDV in wild boar was genetically similar to Chinese PEDV strains in phylogenetic investigations. Our results indicated that PEDV is circulating in the wild boar and provided a novel knowledge into epidemiology of PEDV infection.

Keywords: PEDV; Porcine epidemic diarrhea virus; South Korea; Sus scrofa; Wild boar.

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Figures

Fig. 1
Fig. 1
Geographical distribution of porcine epidemic diarrhea virus (PEDV) in wild boar in South Korea (a) and topographic relation with location of PEDV positive wild boar in Korea (b). Regions of PEDV positive samples are indicated as stars. The major mountains near where positive samples were collected are indicated as green triangles. Each province where PEDV were detected is labeled as follows: A: Yeoncheon-gun, Gyeonggi Province; B: Pocheon-si, Gyeonggi Province; C: Gapyeong-gun, Gyeonggi Province; D: Paju-si, Gyeonggi Province; E: Namyangju-si, Gyeonggi Province; F: Eunpyeong-gu, Seoul; G: Yanggu-gun, Gangwon Province; H: Cheorwon-gun, Gangwon Province; I: Gangneung-si, Gangwon Province; J: Seo-gu, Daejun; K: Asan-si, Chungnam Province; L: Youngdong-gun, Chungbuk Province; M: Kimcheon-si, Gyeongbuk Province; N: Buk-gu, Daegu; O: Hamyang-gun, Gyeongnam Province; P: Jinju-si, Gyeongnam Province; Q: Suncheon-si, Jeonnam Province.
Fig. 2
Fig. 2
Phylogenetic tree of PEDV partial spike sequences of wild boar strains (gray shadow and diamonds) and GenBank available sequences. Reference strains were indicated as follows; strain (country/year/accession number). Bootstrap replication values using from 1000 replicates are listed as percentages at branch nodes. Bootstrap support values above 70% are shown. Subgroups of the phylogenetic tree were divided as G1, G2, and G3. G1 was further subdivided into G1-1, G1-2, and G1-3 (Park et al., 2007).
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