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SURVEILLANCE AND CHARACTERIZATION OF <i>RIEMERELLA ANATIPESTIFER</i> FROM WILD BIRDS IN SOUTH KOREA
Cha, Se-Yeoun,Seo, Hye-Suk,Wei, Bai,Kang, Min,Roh, Jae-Hee,Yoon, Ran-Hee,Kim, Ji-Hyuk,Jang, Hyung-Kwan Wildlife Disease Association 2015 JOURNAL OF WILDLIFE DISEASES Vol.51 No.2
<P>We conducted surveillance for Riemerella anatipestifer (RA) in wild birds along the East Asian-Australasian flyway in South Korea. Detected RA were characterized by serotype, antibiotic susceptibility, and sequence analysis of the 16S rRNA gene. We collected 944 wild birds of 34 species from 19 of South Korea's major migratory wild bird habitats between 2011 and 2012. We identified RA by PCR and rRNA gene sequence in 71/102 (69.6%) pharyngeal swabs and 19/944 (2.0%) cloacal swabs of wild birds. Most RA positives (71/75 [95%] pharyngeal and 19/704 [(2.6%] cloacal) were from three duck species (family Anatidae): Mallard Duck (Anas platyrhynchos), Northern Pintail (Anas acuta), and Spot-billed Duck (Anas poecilorhyncha). Thirty-three RA isolates obtained and examined were highly resistant to aminoglycosides: kanamycin (100%), gentamicin (94%), amikacin (91%), neomycin (88%), and streptomycin (82%). Six isolates were identified as serotype 4 by agar gel precipitation. Serotypes 1 and 7, which are known virulent serotypes, were also identified in three isolates from wild duck species.</P>
Cha, Se-Yeoun,Seo, Hye-Suk,Kang, Min,Jang, Hyung-Kwan Wildlife Disease Association 2013 Journal of wildlife diseases Vol.49 No.1
<P>Sera from 102 wild raccoon dogs (Nyctereutes procyonoides) were screened for antibodies to canine parvovirus (CPV) and influenza A virus (IAV) in South Korea. Sixteen samples were antibody positive for CPV and all samples were negative for IAV antibodies.</P>
Prevalence of Duck Circovirus Infection of Subclinical Pekin Ducks in South Korea
CHA, Se-Yeoun,SONG, Eu-Tteum,KANG, Min,WEI, Bai,SEO, Hye-Suk,ROH, Jae-Hee,YOON, Ran-Hee,MOON, Oun-Kyoung,JANG, Hyung-Kwan The Japanese Society of Veterinary Science 2014 The Journal of veterinary medical science Vol.76 No.4
<P><B>ABSTRACT</B></P><P>An investigation was carried out to determine the prevalence and infection pattern of duck circovirus (DuCV) in subclinical Pekin ducks on South Korean duck farms. A total of 147 samples collected from 92 duck farms in five provinces were examined from 2011 to 2012. The overall prevalence of DuCV PCR-positive pooled bursa of Fabricius and liver samples was 21.8% (32/147). The prevalence of DuCV PCR-positive samples increased significantly in 3-week-old ducks compared with that in 1-week-old ducks (<I>P</I><0.05). DuCV in association with <I>Riemerella</I> and <I>Salmonella</I> infections (10.9%; 16/147) occurred at the same level as infection with DuCV alone (10.9%; 16/147). In comparison of the relationship between bacterial diseases (salmonellosis, <I>Riemerella</I> infection) and morbidity in farms with and without DuCV, morbidity was higher in circovirus-positive farms (50%; 16/32) than in circovirus-negative farms (26.1%; 30/115). Our findings provide baseline information on the degree of DuCV infection and distribution and pattern of DuCV in ducks, and it is evident that DuCV can be associated with subclinical diseases and that subclinical infection could be economically important.</P>