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관악산에서 참진드기 조사 및 중증열성혈소판감소증후군 바이러스 검출
채정병,김태희,정지호,박윤지,박진호,최경성,유도현,박배근,채준석,Chae, Jeong-Byoung,Kim, Tae-Hee,Jung, Jee-Ho,Park, Yoon-Ji,Park, Jin-Ho,Choi, Kyoung-Seong,Yu, Do-Hyeon,Park, Bae-Keun,Chae, Joon-Seok 대한수의학회 2017 大韓獸醫學會誌 Vol.57 No.3
This study was performed to investigate the distribution of ticks and the rate of infection with severe fever with thrombocytopenia syndrome (SFTS) virus in ticks collected at Mt. Gwanak and the Seoul National University campus, Korea. Ticks (n = 273) were collected from May to October and included 76 Haemaphysalis longicornis (4 adult females, 72 nymphs), 49 Haemaphysalis flava (9 adult females, 3 adult males, 37 nymphs), and 148 Haemaphysalis spp. larvae. SFTS virus detection was performed by using one-step RT PCR and nested PCR. The SFTS virus was detected in 7 samples (1 Haemaphysalis longicornis nymph, 3 Haemaphysalis flava nymphs, and 3 Haemaphysalis spp. larva). The overall minimum field infection rate was 2.6%, whereas the minimum field infection rates of adult, nymphal, and larval ticks were 0%, 3.2%, and 2.0%, respectively. For a more accurate indication of the prevalence of SFTS virus in Korea, further in-depth investigations of tick species and SFTS virus occurrence over a larger area and longer period are needed.
국내 송아지 분변 내 설사병 병원체 검출과 설사 발병율 조사
김수희 ( Suhee Kim ),강진희 ( Jin-hee Kang ),이창준 ( Chang-joon Lee ),이영성 ( Young-sung Lee ),채정병 ( Jeong-byoung Chae ),강성우 ( Sung-woo Kang ),정숙한 ( Suck-han Jeong ),유도현 ( Do-hyeon Yu ),조아라 ( Ara Jo ),류재규 ( Jae 한국가축위생학회 2016 韓國家畜衛生學會誌 Vol.39 No.3
Diarrhea is reported as one of the most common diseases in calves. It is thought to be a major cause of productivity and economic loss to cattle producers. The aim of this study is to provide a better under-standing of well-known diarrheagenic pathogens and incidence of diarrhea in Korean calves. In this study, the relationship of calf diarrhea and pathogens were investigated from calves under 60 days of age in five areas of Korea from April to July, 2016. Of examined fecal samples, 38.3% was positive for any pathogens, and Giardia was the most common pathogen (25.5%). The incidence of diarrhea was 31% from pathogen-negative fecal samples whereas 61.1% from pathogen-positive fecal samples, sug-gesting high correlation between pathogenic factor and diarrhea. In addition, 80% of E. coli (K99) pos-itive calves showed diarrhea, suggesting E. coli (K99) could be highly pathogenic. The incidence of diarrhea and infection rate increased with age. Rotavirus was revealed as a major pathogen in calves under 20 days of age, and the infection rate of Giardia increased rapidly in calves 20 to 39 days of age. The information on interconnections between clinical diarrhea and pathogens would contribute to developing strategies for treatment of calf diarrhea.