no edit summary
Line 1: Line 1: −
<big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big>
  −
<big><center>[[Bacteria|'''BACK TO BACTERIA''']]</center></big>
  −
  −
  −
*Causes [[Joints - inflammatory#In Sheep|arthritis in sheep]] and [[Joints - inflammatory#In Pigs|arthritis and discospondylitis in pigs]]
  −
*May be involved in [[Bacterial skin infections#Systemic bacterial infections|cutaneous lesions]]
  −
   
===Overview===
 
===Overview===
    
*Causes erysipelas in pigs and turkeys worldwide
 
*Causes erysipelas in pigs and turkeys worldwide
*Occasionally infects sheep and other animals
+
*[[Infectious Arthritis#In Pigs|Arthritis and discospondylitis in pigs]] as well as [[Bacterial skin infections - Pathology#Systemic bacterial infections|cutaneous lesions]]
 +
*Occasionally causes [[Infectious Arthritis#In Sheep|arthritis in sheep]] and disease in other animals
 
*Causes erysipeloid, a localised cellulitis in humans
 
*Causes erysipeloid, a localised cellulitis in humans
 
*Found in porcine tonsils - 50% of pigs are thought to be carriers
 
*Found in porcine tonsils - 50% of pigs are thought to be carriers
Line 52: Line 46:       −
===Swine erysipelas===
+
===[[Swine Erysipelas]]===
 +
 
 +
 
 +
===[[Turkey erysipelas]]===
 +
 
 +
 
 +
 
 +
===Sheep infections===
 +
 
 +
*Non-suppurative polyarthritis of lambs from contamination of navel or tail-docking/castration wounds
 +
*Cellulitis and laminitis in older lambs and ewes causing post-dipping lameness - entry through skin abrasions in hoof from contaminated dip
 +
*Valvular endocarditis and pneumonia in ewes reported
 +
**Clinical sighns:
 +
***Cutaneous erysipelas
 +
***Polyarthritis in lambs
 +
***Rarely fatal septicaemia
 +
**Enters via:
 +
***Cuts, abrasions
 +
***Castration or docking wounds
 +
***Haematogenous spread -> subacute or chronic '''fibrinopurulent polyarthritis'''
 +
**Morbidity up tp 50%
 +
**Affects mostly unthrifty lmbs
 +
**Fibrosis and [[Musculoskeletal Terminology - Pathology|osteophyte]] formation in later stages -> persistent lameness
 +
 
 +
=== Human erysipeloid ===
 +
 
 +
*Infection through skin wounds from fish and poultry
 +
*Localised cellulitis
 +
*Occasional joint and heart disease after haematogenous spread if untreated
 +
 
   −
*Carrier pigs act as reservoir of infection
+
[[Category:Bacteria_miscellaneous]] [[Category:Gram_positive_bacteria]] [[Category:Rods]] [[Category:Sheep_Bacteria]] [[Category:Pig_Bacteria]] [[Category:Avian Bacteria]] [[Category:To_Do_-_Bacteria]][[Category:To Do - Major]]
*Organisms excreted in faeces of acutely-affected pigs
  −
*Ingestion of contaminated food and water, or via skin abrasions
  −
*Clinical outcome depends on susceptibility of pigs and virulence of strain
  −
*Pigs susceptible after maternal antibody waned (after 3 months) and before protective immunity acquired (3 years)
  −
*Change in diet, extremes of temperature and fatigue thought to predispose to infection
  −
*Septicaemic form:
  −
**Acute; incubation period 2-3 days
  −
**Pigs found dead, febrile, depressed, recumbent or with stilted gait
  −
**Mortality high
  −
**Pregant sows abort
  −
*Cutaneous form:
  −
**Diamond skin lesions
  −
**Fewer systemic signs, mortality rates lower
  −
**Pigs febrile with small, pink/purple raised areas or extensive diamond-shaped plaques over skin
  −
**Lesions may resolve within a week, or become necrotic and slough
  −
*Arthritis:
  −
**Older pigs, chronic
  −
**Stiffness, lameness, non-weight bearing on affected limbs
  −
**Joint lesions with erosion of articular cartilage, fibrosis and ankylosis
  −
**Strong impact on productivity
  −
*Vegetative endocarditis:
  −
**Thrombus on mitral valves
  −
**Asymptomatic or congestive heart failure and sudden death with stress
  −
*Diagnosis:
 
Author, Donkey, Bureaucrats, Administrators
53,803

edits