| Postweaning multisystemic wasting syndrome of pigs in Korea: prevalence, microscopic lesions and coexisting microorganisms. | |
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MedLine Citation:
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PMID: 11853147 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A retrospective study was performed on natural cases of postweaning multisystemic wasting syndrome (PMWS), recorded from January 1999 to December 2000, to determine the prevalence, microscopic lesions, and other coexisting pathogens associated with PMWS. PMWS is diagnosed based on three criteria: the presence of clinical signs (retardation of growth), characteristic microscopic lesions (granulomatous inflammation and inclusion body), and the presence of porcine circovirus (PCV)-2 within these lesions. One hundred and thirty three (8.1%) of the 1634 pigs submitted from 1243 pig farms were diagnosed for PMWS. The affected pigs were from 25 to 120 days old, the majority (78 cases, 58.6%) being 60 to 80 days old. PMWS occurred each month during the two-year study period, but the incidence peaked in May (38 cases, 28.6%), followed by April (18 cases, 13.5%) and June (13 cases, 9.8%). The most consistent and characteristic lesions were multifocal, granulomatous inflammation in lymph nodes, liver and spleen, characterized by infiltration of epithelioid macrophages and multinucleated giant cells. The majority of cases (113 cases, 85.0%) was dual infection with other pathogens. The combination of PCV-2 and Hemophilus parasuis (43 cases, 32.3%) was shown to be the most prevalent followed by PCV-2 and porcine reproductive and respiratory syndrome virus (39 cases, 29.3%). The consistent presence of PCV-2, but lower prevalence of other viral and bacterial pathogens in all pigs examined with PMWS, has led to the speculation that PCV-2 is the etiological agent causing PMWS. |
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Authors:
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Junghyun Kim; Han-Kook Chung; Taewon Jung; Wan-Seob Cho; Changsun Choi; Chanhee Chae |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of veterinary medical science / the Japanese Society of Veterinary Science Volume: 64 ISSN: 0916-7250 ISO Abbreviation: J. Vet. Med. Sci. Publication Date: 2002 Jan |
Date Detail:
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Created Date: 2002-02-20 Completed Date: 2002-07-25 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9105360 Medline TA: J Vet Med Sci Country: Japan |
Other Details:
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Languages: eng Pagination: 57-62 Citation Subset: IM |
Affiliation:
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Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Kyouggi-Do, Republic of Korea. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Circoviridae Infections / epidemiology, microbiology, pathology, veterinary* Circovirus / genetics, growth & development* DNA, Viral / chemistry, genetics Fluorescent Antibody Technique / veterinary Immunohistochemistry / veterinary In Situ Hybridization / veterinary Korea / epidemiology Lung / pathology, virology Lymph Nodes / pathology, virology Palatine Tonsil / pathology, virology Polymerase Chain Reaction / veterinary Prevalence Seasons Spleen / pathology, virology Swine Swine Diseases / microbiology, pathology*, virology Wasting Syndrome / epidemiology, microbiology, pathology, veterinary* |
| Chemical | |
Reg. No./Substance:
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0/DNA, Viral |
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