• Parasites, Hosts and Diseases
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• 제56권6호
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• pp.597-602
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• 2018

Histomonas meleagridis is a facultative anaerobic parasite, which can cause a common poultry disease known as histomoniasis. The species and age of the birds impacts on the susceptibility, with turkey being the most susceptible species. Chickens are less susceptible to H. meleagridis than turkeys and usually serve as reservoir hosts. Here, the diagnosis of an outbreak of histomoniasis in backyard Sanhuang chickens is described. The primary diagnosis was made based on clinical symptoms, general changes at necropsy, histopathology, and the isolation and cultivation of parasites. The pathogen was further confirmed by cloning, PCR identification, and animal inoculation tests. A strain of H. meleagridis, named HM-JSYZ-C, with a higher pathogenicity level in chickens was obtained. The study lays a foundation for further investigations into H. meleagridis and histomoniasis in chickens.

• Safety and Health at Work
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• 제3권1호
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• pp.77-83
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• 2012

Zoonoses represent a public health risk recently pointed out by the spreading of previously unknown human infectious diseases emerging from animal reservoirs such as severe acute respiratory syndrome and avian influenza caused by H5N1-virus. These outbreaks have shown that animal breeding activities can pose a significant public health risk. Until now, the risk of zoonoses has probably been underestimated, particularly in occupational settings. The emergence or re-emergence of bacterial (Mycobacterium bovis and Brucella spp) or viral (hepatitis E virus) infections shows that zoonoses should be considered as emerging risks in agricultural and animal breeding and should be addressed by specific preventive interventions. Close cooperation and interaction between veterinarians, occupational health physicians and public health operators is necessary, for a worldwide strategy to expand interdisciplinary collaborations and communications in all aspects of health care for humans, animals and the environment. This is what the One Health Approach was intended to be.

• Journal of Microbiology and Biotechnology
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• 제24권12호
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• pp.1728-1735
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• 2014

Scrub typhus, caused by infection with Orientia tsutsugamushi, is a mite-borne zoonotic disease endemic to the Asian-Pacific region. In Korea, the incidence of this disease has increased with climate changes, and over 10,000 cases of infection were reported in 2013. Although this infection is treatable with antibiotics such as doxycycline and azithromycin, an effective prophylactic vaccine against O. tsutsugamushi would be more desirable for preventing scrub typhus in endemic areas. In this study, we investigated the 56-kDa type-specific antigen (TSA56), which is a major outer membrane protein of O. tsutsugamushi, as a vaccine candidate. Intranasal immunization of recombinant TSA56 (rec56) induced a higher level of TSA56-specific IgG than that induced by intramuscular immunization of tsa56-expressing DNA (p56). Both types of immunization induced a cell-mediated immune response to TSA56, as demonstrated by the splenic cell proliferation assay. Mice immunized with p56, followed by rec56 plus heat-labile enterotoxin B subunit from E. coli, had a stronger protection from a homologous challenge with the O. tsutsugamushi Boryong strain than with other combinations. Our preliminary results suggest that an effective human vaccine for scrub typhus can include either recombinant TSA56 protein or tsa56-expressing DNA, and provide the basis for further studies to optimize vaccine performance using additional antigens or different adjuvants.

• 농촌의학ㆍ지역보건
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• 제34권1호
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• pp.101-112
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• 2009

2007년 11월 현재 운영 중인 전국 73개 도축장 및 62개 부산물처리장에서 근무하고 있는 소 도축 관련 종사자 1,503명(도축작업자 859명, 부산물처리자 358명, 검사관 및 검사보조원 191명, 등급판정사 및 보조원 95명)을 대상으로 3가지 인수공통감염증(브루셀라증, 큐열, 장출혈성대장균감염증)에 대한 인지도 및 전파경로, 예방법 등에 대한 설문조사를 실시하여 각 직종별로 인수공통감염증에 대한 인지도를 성별, 연령대별, 학력별로 분석하였다. 각 인수공통감염증의 인지율은 브루셀라증이 83.9%로 높은데 비해, 장출혈성대장균감염증은 62.1%이었고, 큐열은 18.5%이었다. 큐열의 경우, 도축작업자와 부산물처리자, 등급판정사 및 보조원의 인지율이 각각 6.6%, 10.3%, 18.9%에 불과했다. 직종별로는 도축작업자와 부산물처리자의 인지율이 검사관 및 검사보조원이나 등급판정사 및 보조원에 비하여 낮고, 같은 직종 내에서는 브루셀라증과 장출혈성대장균감염증의 인지율이 학력이 증가함에 따라 유의미하게 높아지는 경향을 보였다. 또한 다항로지스틱 회귀분석 결과 학력이 유의미하게 인지도에 영향을 주는 요인으로 밝혀져 고위험군을 대상으로 인수공통감염증 전반에 대한 기초적인 교육의 중요성이 강조된다. 각 인수공통감염증의 전파경로로 대부분의 종사자들이 경구를 통한 감염에 대해서는 올바르게 인지하고 있었지만, 그 외의 감염경로에 대해서는 모르거나 잘못 알고 있는 경우가 많았다. 인수공통감염증의 예방이 어려운 이유를 묻는 질문에서 도축작업자와 부산물처리자는 ‘예방법을 몰라서’가, 검사관 및 검사보조원과 등급판정사 및 보조원은 ‘보호구는 있는데 착용하면 불편하고 거추장스러워서’가 가장 많은 답변이었다. 이번 연구의 결과를 토대로 큐열에 대한 홍보교육을 강화하여야 할 것이며, 도축작업자와 부산물처리자에 대해서는 인수공통전염병 전반에 대한 기초교육과 함께 예방법에 대한 교육을 실시해야 할 것이다.

• 한국동물위생학회지
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• 제31권3호
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• pp.331-338
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• 2008

The study was carried out to evaluate the diagnostic efficacy of the tube agglutination test (TAT), enzyme-linked immunosorbent assay (ELISA) and the 2-Mercaptoethanol agglutination test (2-MAT) to detect human brucellosis patients in Korea. We examined 87 serum samples of people in the rural farm areas where bovine brucellosis had been reported. People in this study were divided into seven groups- farmers and their families, veterinarians, veterinary quarantine workers, livestock health control officers, artificial inseminators, livestock traders and healthy control individuals. Among 87 people, 65 were males and 22 were females ranging in age from 13 to 72 years. Of 87 serum samples, ELISA detected 21.84%, TAT detected 11.50% and 2-MAT detected 8.05% Brucella positive sera. Brucella specific IgG ELISA antibody titer was recorder higher in the individuals between the ages of 50 and 65 years. The highest prevalence rate of brucellosis(29.4%) was recorded in the cattle farmers and their family members followed by quarantine veterinary office workers (25%) and practicing veterinarians 01.1%). The majority of the Brucella sero-positive individuals in this study had a history of direct contact with animals.

• 농촌의학ㆍ지역보건
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• 제15권1호
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• pp.49-55
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• 1990

Zoonoses are those diseases and infections that are naturally transmitted between vertebrate animals and man. At present, approximately 175 diseases caused by virus, rickettsia, bacteria, protozoa and helminthes as well as some of arthropods and the number is continually increasing. Although zoonoses are generally recognized as significant health problems, the actual prevalence and incidence of zoonotic infections is difficult to determine. Medical services in a rural area are scarce and ill persons may have little chance to see a physician. Furthermore, a lack of physician awareness and of appropriate diagnostic support is made often misdiagnosis. In rural Korea, parasitic disease is still important subject in the field of zoonotic infections considering its number and morbidity. Recently there was conspicuous reduction of soil-transmitted parasitic diseases (i.e. ascariasis. hookworms, trichuriasis), but clonorchiasis. intestinal trematodiases and taeniasis are a considerable problem. This is often significantly related to human behavioral patterns based on socio-economic and cultural conditions and linked with the local biologic and physical environment. The most of all parasitic zoonoses to man and animals are the food-transmitted parasitic diseases, and domestic animals such as dog, cat, pig, as well as fat and some mammals, ruminants and birds are act as reservoir hosts. In the present topics, current problems of parasitic zoonoses caused by protozoan infections (i. e. toxoplasmosis, pneumocystosis and cryptosporidiosis) which are the most common opportunistic in AIDS or immunocompromised persons, trematode infections (i.e. clonorchiasis, paragonimiasis and some intestinal tremadodiases). cestode infections such as cysticercosis and sparganosis, and some nematode infections of anisakiasis, thelaziasis and strongyloidiasis, are discussed here those on the occurrence in man and animals and the source of transmission as well as prevention and control measures in Korea.

• 한국임상수의학회지
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• 제27권1호
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• pp.6-10
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• 2010

2003년부터 2009년까지 서울 지역 동물병원에 의뢰된 세균성 요로 감염증 개의 병소에서 세균의 분리빈도와 항생제 감수성을 조사한 결과는 다음과 같다. 세균성 요로 감염증 개의 뇨에서 Escherchia coli 27주, Streptoococcus spp. 7주, Staphylococcus spp. 5주, Enterobacter spp. 3주, Proteus spp. 2주, 그리고 기타 세균 3주, 총 47주의 세균이 분리되었다. 이 중 분리 빈도가 높은 E. coli, Streptoococcus spp. 및 Staphylococcus spp.를 대상으로 항생제 감수성을 조사하였다. E. coli의 항생제 감수성은 imimpenem, polymyxin B, amikacin, cephalosporins, aztreonam, amoxicillin clavulate, cephalosporins, tricarcillin, amoxicillin clavulate 순으로 나타난 반면 bacitracin, erythromycin, lincomycin, oxacillin, penicillin, novobiocin 등에 대해서는 높은 내성을 나타내었다. Streptoococcus spp.의 항생제 감수성은 bacitracin, imimpenem, trimethoprime-sulfa 순이었고 amikacin, cefotaxim, cefoxitin, cloxacillin, gentamicin, lincomycin, oxacillin, penicillin, streptomycin, tobramycin에는 매우 높은 내성을 나타내었다. Staphylococcus spp.의 항생제 감수성은 cefoxitin, doxycycline, enrofloxacin, imimpenem, tobramycin에 매우 높았고 aztreonam, tetracycline에 내성을 나타내었다.

• 농촌의학ㆍ지역보건
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• 제44권2호
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• pp.90-93
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• 2019

브루셀라증은 인수공통감염병 중의 하나이며, 우리나라에서는 과거에 비해 거의 근절된 질병이다. 또한 브루셀라증은 우리나라에서 원헬스로 대표되는 상징적인 질병이기도 하다. 이 연구는 민간(경북농업안전보건센터), 가축방역(동물위생시험소) 및 보건당국(보건소) 간의 상호 협력체계를 구축하여 가축전염병 발생 농장 농장주와 가족을 대상으로 브루셀라증 환자 1례를 발견한 사례이다. 이 사례를 통해 인수공통감염병 예방과 관리에 부문간의 협력이 중요함을 다시 인식하는 계기가 되었다.

• 한국환경보건학회지
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• 제15권2호
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• pp.117-121
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• 1989

An observation on the outbreak patterns of zoonoses was carried out on 261,862 cattle, 1,967 swine, 91,500 fowl samples in Chronnam Province. And it was classified by ppsitive.reaction from numbers of request examined and diagnosis to Animal Health Center of Chonnam Province from 1983 to 1988. The results are summarized as follows: Incidence rate of zoonoses in Chonnam area was observed in the order of alveolar sarcoma of fowl (75.0%), bovine facioliasis (47.6%), bovine mastitis (19.0%), bovine salmonellosis (12.6%), salmonellosis of swine (11.0%), salmonellosis of fowl (8.9%), bovine streptogenes (6.7%), tetanus of bovine (2.0%), streptogenes of swine (1.7%), pullorum disease (0.6%), bovine tubercullosis (0.02%), and bovine brucellosis (0.01%). And, especially bovine facioliasis was observed highest outbreaks (89.4%).

• 한국동물위생학회지
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• 제31권3호
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• pp.425-431
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• 2008

A strategic national plan to control of zoonoses is currently somewhat insufficient. Government should extensively assign all case reports of zoonotic disease outbreaks and needs to control them in the context of other decrees. Additionally capacity of veterinarian needs to he increased to control zoonotic diseases efficiently. Namely, veterinarian is responsible for reporting to health authorities if any of zoonotic diseases are diagnosed. Furthermore, government should deploy the veterinarian's resources for prompt epidemiological investigation and for taking countermeasures against zoonotic diseases.