• Title, Summary, Keyword: zoonoses

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Genotypic characterization of fluoroquinolone-resistant Escherichia coli isolates from edible offal

  • Son, Se Hyun;Seo, Kwang Won;Kim, Yeong Bin;Noh, Eun Bi;Lee, Keun-Woo;Oh, Tae-Ho;Kim, Seung-Joon;Song, Jae-Chan;Kim, Tae-Wan;Lee, Young Ju
    • Korean Journal of Veterinary Research
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    • v.60 no.3
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    • pp.173-177
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    • 2020
  • Edible offal is easily contaminated by Escherichia coli (E. coli) and fluoroquinolone (FQ)-resistant E. coli is considered a serious public health problem, thus, this study investigated the genetic characteristics of FQ-resistant E. coli from edible offal. A total of 22 FQ-resistant E. coli isolates were tested. A double mutation in each gyrA and parC led the highest MIC. Four (18.2%) isolates carried plasmid-mediated quinolone resistance genes. The fimH, eaeA, escV, astA, and iucC genes were confirmed. Seventeen isolates (77.3%) were positive for plasmid replicons. The isolates showed high genetic heterogeneity based on pulsed-field gel electrophoresis patterns.

Zoonoses for Pig Farmers in Rural Communities in Korea (농촌지역 양돈 종사자의 인수공통감염병)

  • Lee, Kwan;Lim, Hyun-Sul;Min, Young-Sun;Kim, Byoung-Seok
    • The Korean Journal of Community Living Science
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    • v.23 no.4
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    • pp.383-397
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    • 2012
  • The incidence of zoonoses in Korea has recently increased. But the study for high risk group such as pig farmers to zoonoses has not been conducted in Korea. Thus we reviewed the articles in order to obtain basic data for zoonoses among pig farmers, especially in rural communities. Pigs are one of the most important domestic livestock in Korea not only from economic standpoint but also from standpoint of food. Pigs also represent a potential reservoir for many novel pathogens, therefore may transmit these to humans via direct contact, vectors such as mosquitos, or contaminated meat. The zoonoses associated with pigs can be classified into bacterial pathogen, viruses and so on. Bacterial zoonoses include brucellosis, leptospirosis, listeriosis, enterohemorrhagic Escherichia coli infection, pasteurellosis, salmonellosis, yersiniosis, tuberculosis, anthrax, necrobacillosis, swine erysipelas, erysipeloid, melioidosis, Streptococcus suis infection, Clostrium difficile infection, and campylobactor infection. Viral zoonoses consist of Japanese encephalitis, swine influenza, Nipah virus, Reston ebolavirus, and hepatitis E virus infection. Other type of zoonoses include actinomycosis, toxoplasmosis and Taenia solium infection. These zoonoses were important in Korean health policy but lately they have been overlooked. For effective health policy, we need to study zoonoses associated with pigs, and clinicians and veterinarians must care deeply about these zoonoses.

Complete Genome Sequence of Salmonella enterica Serovar Pullorum Multidrug Resistance Strain S06004 from China

  • Li, Qiuchun;Hu, Yachen;Wu, Yinfei;Wang, Xiaochun;Xie, Xiaolei;Tao, Mingxin;Yin, Junlei;Lin, Zhijie;Jiao, Yang;Xu, Lijuan;Jiao, Xinan
    • Journal of Microbiology and Biotechnology
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    • v.25 no.5
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    • pp.606-611
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    • 2015
  • As Salmonella enterica serovar Pullorum remains a major economic problem for the poultry industries of countries with no efficient control measures, we presented a multidrug resistance strain S06004 (isolated from a clinically sick chicken in China in 2006) for genome sequencing. The genome comparison showed that the strain contained two prophages, the ST104 and prophage-4 (Fels2) of E. coli LF82, which were not detected in the only published genomes of S. Pullorum RKS5078 and CDC1983-67. In addition, the GyrA Ser83 point mutation, drugresistant genes, and many antibiotic pump systems that are present in S06004 may be contributing to the multidrug resistance of this strain.

Awareness on Zoonoses among Livestock(Korean Native Cattle) Farmers in Gyeongsangbuk-do (경북 일부지역 축산(한우) 농업인의 인수공통감염병 인지도)

  • Park, Sung-Jun;Yoo, Seok-Ju;Lee, Kwan;Lim, Hyun-Sul
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.26 no.4
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    • pp.418-425
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    • 2016
  • Objectives: General livestock farmers are known as a high riskgroup for zoonoses, but studies of general livestock farmers in regard tozoonoses have been rare in Korea. We surveyed awareness of zoonoses amonggeneral livestock farmers to suggest directions for education. Methods: A questionnaire was developed examining the workbehaviors and risk factors of general livestock farmers. We conducted a questionnairesurvey on awareness on zoonoses among 265 general livestock farmers. Results: The awareness rates for zoonosis itself,brucellosis, and q-fever were 13.0%, 65.0%, and 2.3%, respectively. The awarenessrate of zoonoses and brucellosis tended to increase with sex. Conclusions: Livestock is the principal reservoir ofzoonoses. Therefore, effective working guidelines for preventing zoonoses amonggeneral livestock farmers must be developed and an educational program onzoonoses is needed for general livestock farmers. Furthermore, publicityactivities on the prevention of zoonoses are needed for high-risk groups.

A Study on the Principal Zoonoses for Food Sanitation (식품위생학상(食品衛生學上) 중요(重要) Zoonoses 에 관(關)한 조사연구(調査硏究))

  • Lee, Yong-Wook
    • Korean Journal of Food Science and Technology
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    • v.5 no.2
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    • pp.108-112
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    • 1973
  • Zoonoses are very important disease. But little attention has been given to the study of zoonoses in Korea. The author reviewed publications about zoonoses outbreakings in Korea and evaluated and analyzed the data available. It is hoped that the information will be use for reference in future endeavors of study in the field of zoonoses in Korea. The information obtained are as follows: 1) From 1962 to 1966. there have been 3 cases of anthrax. 2 cases of brucellosis and 140 cases of erysipeloid. 2) Throughout Korea, there are 670 slaughther houses and for last ten years cows and swines were condemned by the inspection before slaugter the ranges were as follows: cows : $0.45{\sim}0.98%$ swines : $0.005{\sim}0.05%$ 3) Epidemiological pattern of zoonoses in animals: a) Direct zoonoses are anthrax brucellosis and erysipelos. Encidence rate of anthrax 1.7 per 100,000 in 1964, burcellosis 1338.4 in 1960, erysipelos of swine 1897.2 in 1962. b) It is noticed that $1.0{\sim}2.7%$ of swine in mainland and $3.8{\sim}8.5%$ in Chechu island were infected by cysticercus cellulose.

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Effects of Proanthocyanidin-rich Extract from Pinus radiata Bark on Immune Responses of Broiler Chickens

  • Park, In-Jae;Cha, Se-Yeoun;Kang, Min;So, Yang-Seop;Go, Hiw-Gon;Son, Young-Ho;Mun, Sung-Phil;Ryu, Kyung-Seon;Jang, Hyung-Kwan
    • Korean Journal of Poultry Science
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    • v.37 no.4
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    • pp.331-336
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    • 2010
  • We evaluated the immunomodulatory effects of proanthocyanidin-rich extract (PAE) from Pinus radiata bark in broiler. Proliferation of peripheral blood mononuclear cells and thymocytes was significantly enhanced in 2.5, 5, 10 mg/kg PAE-treated broiler chickens. Proliferation of splenocytes was significantly enhanced in 1.25, 2.5, 5, 10 mg/kg PAE-treated broiler chickens. These effects were markedly enhanced by the presence of LPS, which acts on B cells responsible for humoral immunity, and Con A, which acts directly on T cells involved in cell mediated immunity. PAE significantly promoted the expression of interleukin-18 and interleukin-$1\beta$. Thus, PAE from P. radiata possesses immunomodulatory effects in broiler chickens.

Future Management Strategies for Zoonoses Based on One Health (원헬스 기반 인수공통감염병의 미래 관리 전략)

  • Lee, Kwan
    • Journal of agricultural medicine and community health
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    • v.44 no.1
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    • pp.39-42
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    • 2019
  • Zoonoses are the diseases that are transmitted to human being from vertebrate animals either from livestock animals or from wildlife. Recently, zoonoses are increasingly common as a result of incremental human-animal contact. Propagative infections in wild animals and livestock are transmitted to human beings who are encountered with them. In general, wild animals can transmit infectious agents to livestock, and then livestock further transmit them to human being is a simple model of on how zoonotic diseases get transmitted to human being. This model emphasizes the importance of early detection of zoonoses by surveillance at its incipient stage. Cooperation between the respective ministries plays an important role in the identification of zoonoses and planning for the formulation of better preventive and control policy and strategy. We will be able to predict the occurrence of zoonotic diseases in human on the basis of disease trends in wildlife and livestock once when we obtain the surveillance data and data generated by respective ministries through sound cooperation and collaboration.

Use of In Vivo-Induced Antigen Technology to Identify In Vivo-Expressed Genes of Campylobacter jejuni During Human Infection

  • Hu, Yuanqing;Huang, Jinlin;Li, Qiuchun;Shang, Yuwei;Ren, Fangzhe;Jiao, Yang;Liu, Zhicheng;Pan, Zhiming;Jiao, Xin-An
    • Journal of Microbiology and Biotechnology
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    • v.24 no.3
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    • pp.363-370
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    • 2014
  • Campylobacter jejuni is a prevalent foodborne pathogen worldwide. Human infection by C. jejuni primarily arises from contaminated poultry meats. Genes expressed in vivo may play an important role in the pathogenicity of C. jejuni. We applied an immunoscreening method, in vivo-induced antigen technology (IVIAT), to identify in vivo-induced genes during human infection by C. jejuni. An inducible expression library of genomic proteins was constructed from sequenced C. jejuni NCTC 11168 and was then screened using adsorbed, pooled human sera obtained from clinical patients. We successfully identified 24 unique genes expressed in vivo. These genes were implicated in metabolism, molecular biosynthesis, genetic information processing, transport, and other processes. We selected six genes with different functions to compare their expression levels in vivo and in vitro using real-time RT-PCR. The results showed that the selected six genes were significantly upregulated in vivo but not in vitro. In short, these identified in vivo-induced genes may contribute to human infection of C. jejuni, some of which may be meaningful vaccine candidate antigens or diagnosis serologic markers for campylobacteriosis. IVIAT may present a significant and efficient method for understanding the pathogenicity mechanism of Campylobacter and for finding targets for its prevention and control.

Awareness on Zoonoses among Pig Farmers in Korea (양돈 종사자의 인수공통감염병 인지도)

  • Yoo, Seok-Ju;Lim, Hyun-Sul;Lee, Kwan
    • Journal of agricultural medicine and community health
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    • v.39 no.4
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    • pp.222-229
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    • 2014
  • Objectives: Pig farmers are known as the high risk group for the zoonoses, but the study for pig farmers to zoonoses has been rare in Korea. So we surveyed the awareness on zoonoses among pig farmers to suggest directions for education. Methods: We visited four regional spots (Gyeongsangnam-do, Gyeongsangbuk-do, Jeollanam-do, and Chungcheongnam-do) where the self education programs of Korea pork producers were convened. We conducted a questionnaire survey of the general, work-related characteristics and the awareness on zoonoses among 278 pig farmers. Results: The awareness rate of zoonoses itself, brucellosis, tuberculosis and salmonellosis were 52.9%, 85.6%, 87.8%, 89.6%, respectively. The awareness rate of the content related to zoonoses, "Human can be infected by the disease of pig", was 46.9%. Awareness rate of zoonoses tended to increase as the school career, and awareness rate of salmonellosis tended to increase as working duration of pig raising. Conclusions: The pig is the principal reservoir of zoonoses. Therefore, effective working guidelines to prevent zoonoses for pig farmers must be developed and an educational program on zoonoses is needed for pig farmers. Furthermore, publicity activities about the prevention of zoonoses are needed for high-risk groups.

Molecular Identification of Adenocephalus pacificus (Cestoda) from Three Human Cases in Lima Province, Peru

  • Mondragon-Martinez, Aaron;Martinez-Rojas, Rosa;Garcia-Candela, Enrique;Delgado-Escalante, Abraham;Tantalean-Vidaurre, Manuel;Cruz-Neyra, Lidia
    • The Korean Journal of Parasitology
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    • v.58 no.4
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    • pp.457-460
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    • 2020
  • The Pacific tapeworm Adenocephalus pacifcus (syn. Diphyllobothrium pacificum) is a causative agent of diphyllobothriosis occurred in Pacific coast of South America, mainly in Peru. Source of infections are traditional meal from raw or undercooked marine fish such as "cebiche". We confirmed 3 new cases, one including scolex and the other two headless. A strobila 46 cm long without scolex was discharged from an 8-year-old boy before treatment. Specimens were confirmed morphologically by presence of tegumental protuberances on proglottids and small sized eggs. Partial sequence of cytochrome c oxidase subunit 1 gene was congruent with A. pacificus sequences.