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Original Article An Epidemiologic Study on Sudden Deaths of Cattle Occurred in Kyongju.
Hyun Sul Lim, Hae Kwan Cheong, Jung Ran Kim, Ik Jung Kim, Gyoung Yim Ha
Epidemiol Health 2001;23(1):59-68
DOI: https://doi.org/
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1Department of Preventive Medicine, Dongguk UniversityCollege of Medicine.
2Department of Pathology, Dongguk University College ofMedicine.
3Department of Microbiology, Dongguk University College ofMedicine.
4Department of Clinical Pathology, Dongguk University Collegeof Medicine.

PURPOSE
This study was conducted to provide the baseline data for the epidemiologic and microbiologic investigation for the etiology of sudden deaths of cattle in Sara-Ri, Seo Myun, Kyongju.
METHODS
This survey was performed between April 11 and 22, 1994. Epidemiologic investigation consisted of interview of the residents, as well as pathologic and microbiologic test on tissues and blood samples from cardiac puncture.
RESULTS
The dead numbers of cattle were 149 in 35 households during about 20 years. The cows(63.9%) were more than bulls(36.1%) and most of them were raised in playpen(95.7%). The first death occurred in 1974, and then number of deaths increased until 1994. Besides the age of cattle at death was over two years old (88.3%), most of them(69.4%) died within one hour after onset of noticeable symptom by the farmers. The most common symptom of cattle at death was 'sudden death after screaming(71.1%)' and 'seizure (33.3%)'. Colonies from blood of case 3 showed double hemolysis in blood agar plate. The microbiologic test results in the culture of Clostridium perfringens. The pathological features were characterized as most of renal tubules revealed coagulative necrosis. Some gram-positive bacilli are scattered in interstitium.
CONCLUSIONS
Above results suggest C. perfringens as a possible pathogen of this ourbreak in livestock. The possibility of human infection, although nonfatal, and lack of vaccination against C. perfringens raises a need for stronger preventive action toward this communicable disease of cattle on this village.


Epidemiol Health : Epidemiology and Health