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{{Podcasts
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|link = http://media.bloomsburymediacloud.org/podcasts/wikivet-english/enzootic-pneumonia-in-pigs
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Also Known As: '''''EP — Mycoplasma hyopneumoniae infection'''''
 
Also Known As: '''''EP — Mycoplasma hyopneumoniae infection'''''
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==Introduction==
 
==Introduction==
[[Image:Enzootic pneumonia of pigs.jpg|right|thumb|200px|Enzootic pneumonia of pigs (Image sourced from Bristol Biomed Image Archive with permission)]]
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[[Image:Enzootic Pneumonia Lesion1.jpg|right|thumb|200px|Lesions of uncomplicated enzootic pneumonia in the cardiac lobes of pig lungs at slaughter. (Source: Prof Andrew Rycroft)]]
 
Enzootic pneumonia in pigs is a '''[[:Category:Respiratory Diseases - Pig|respiratory disease]]''' caused by '''''[[Mycoplasma hyopneumoniae]]'''''. The disease is associated with a significant loss of production in intensively reared pigs. The organism alone causes a mild disease with characteristic lesions but it also enables other pathogens , particularly '''''[[Pasteurella multocida]]''''' to cause secondary pneumonia which can be more severe. '''''[[Streptococcus suis]]'', ''[[Haemophilus parasuis]]'' and ''[[Actinobacillus pleuropneumoniae]]''''' are other pathogens that may be more likely to cause disease when enzootic pneumonia is present. Enzootic pneumonia is frequently a component of '''Porcine Respiratory Disease Complex''', when combined with other agents such as [[PRRS]], '''[[Porcine Circoviruses|Porcine Circovirus 2]] and/or [[Swine Influenza]]''' and bacteria.
 
Enzootic pneumonia in pigs is a '''[[:Category:Respiratory Diseases - Pig|respiratory disease]]''' caused by '''''[[Mycoplasma hyopneumoniae]]'''''. The disease is associated with a significant loss of production in intensively reared pigs. The organism alone causes a mild disease with characteristic lesions but it also enables other pathogens , particularly '''''[[Pasteurella multocida]]''''' to cause secondary pneumonia which can be more severe. '''''[[Streptococcus suis]]'', ''[[Haemophilus parasuis]]'' and ''[[Actinobacillus pleuropneumoniae]]''''' are other pathogens that may be more likely to cause disease when enzootic pneumonia is present. Enzootic pneumonia is frequently a component of '''Porcine Respiratory Disease Complex''', when combined with other agents such as [[PRRS]], '''[[Porcine Circoviruses|Porcine Circovirus 2]] and/or [[Swine Influenza]]''' and bacteria.
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==Clinical Signs==
 
==Clinical Signs==
Enzootic pneumonia causes '''coughing''' which may last several weeks. When secondary bacterial infection complicates the mycoplasma infection, there is often other respiratory signs such as raised respiratory rate.
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Enzootic pneumonia causes '''coughing''' which may last several weeks. When secondary bacterial infection complicates the mycoplasma infection, there are often other respiratory signs such as raised respiratory rate.
    
Although signs are unusual in pigs <6-8 weeks of age, concurrent infection with [[Porcine Reproductive and Respiratory Syndrome|PRRS]] can cause earlier clinical disease.
 
Although signs are unusual in pigs <6-8 weeks of age, concurrent infection with [[Porcine Reproductive and Respiratory Syndrome|PRRS]] can cause earlier clinical disease.
    
==Diagnosis==
 
==Diagnosis==
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[[Image:Peribronchiolar Cuffing Enzootic Pneumonia1.jpg|right|thumb|200px|Peribronchiolar cuffing in enzootic pneumonia.  The lymphoid cells with dark blue nuclei surround the bronchiole.  This is an alveolitis.  A lymphoid follicle is developing in the upper right of the picture.  The alveoli contain cells which have infiltrated the pulmonary tissues.  Inflammatory cells are also crossing the bronchiolar epithelium and the lumen of the bronchiole contains inflammatory cells indicating a bronchopneumonia.  The ''Mycoplasma hyopneumoniae'' organisms cannot be seen but would be located on the epithelial surface of the bronchiole. (Source: Prof Andrew Rycroft)]]
 
EP is often suspected if coughing pigs are present at the appropriate age.
 
EP is often suspected if coughing pigs are present at the appropriate age.
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'''Eradication strategies''' have been employed using partial depopulation and preventing entry of animals under 10 months of age. These have been successful in various European countries. <ref name="Rautiainen" /> Even after successful eradication, reinfection is still common.
 
'''Eradication strategies''' have been employed using partial depopulation and preventing entry of animals under 10 months of age. These have been successful in various European countries. <ref name="Rautiainen" /> Even after successful eradication, reinfection is still common.
      
{{Learning
 
{{Learning
 
|flashcards = [[Enzootic Pneumonia  -  Pigs Flashcards|Enzootic Pneumonia in Pigs Flashcards]]
 
|flashcards = [[Enzootic Pneumonia  -  Pigs Flashcards|Enzootic Pneumonia in Pigs Flashcards]]
 
}}
 
}}
      
==References==
 
==References==
 
<references/>
 
<references/>
Animal Health & Production Compendium, '''Enzootic Pneumonia of pigs datasheet''', accessed 25/06/2011 @ http://www.cabi.org/ahpc/
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Animal Health & Production Compendium, '''''Mycoplasma hyopneumoniae'' datasheet''', accessed 25/06/2011 @ http://www.cabi.org/ahpc/
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{{CABI source
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|datasheet = [http://www.cabi.org/ahpc/?compid=3&dsid=74527&loadmodule=datasheet&page=2144&site=160 ''Mycoplasma hyopneumoniae'', porcine enzootic pneumonia] and [http://www.cabi.org/ahpc/?compid=3&dsid=74491&loadmodule=datasheet&page=2144&site=160 ''Mycoplasma hyopneumoniae'' infections]
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|date = 25/06/2011
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}}
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<br><br><br>
       
{{Andrew Rycroft
 
{{Andrew Rycroft
 
|date = August, 03 2011}}
 
|date = August, 03 2011}}
[[Category:CABI Expert Review Completed]]
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{{OpenPages}}
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[[Category:CABI Expert Review Completed]][[Category:CABI AHPC Pages]]
 
[[Category:Respiratory Diseases - Pig]]
 
[[Category:Respiratory Diseases - Pig]]
Author, Donkey, Bureaucrats, Administrators
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