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==Description==
 
==Description==
====Antigenicity====
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A progressive disease of the cat caused by feline[[Coronaviridae|coronavirus]]. Occurs in 5-10% of cats infected with Feline Enteric Coronavirus (FECoV)which is characterised by a variety of clinical signs, including weight loss, fever and vasculitis. Two forms of the disease exist the wet form and the dry form.
*FIP occurs in 5-10% of cats infected with Feline Enteric Coronavirus (FECoV), which is quite common
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*It is therefore antigenically indistinguishable from FECoV
      
==Signalment==
 
==Signalment==
*Domestic and wild cats
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Domestic and wild cats
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==Diagnosis==
 
==Diagnosis==
*Clinical signs
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FIP should be suspected in all cases of chronic weight loss or recurrent fever unresponsive to antibiotics, particularly in multiple cat situations.
**FIP should be suspect in all cases of chronic weight loss or recurrent fever unresponsive to antibiotics, particularly in multiple cat situations
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Simple serology is impossible as most cats will have antibody to FECoV
*Simple serology is impossible as most cats will have antibody to FECoV
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However, 4 indicators can be used to cross reference:
*However, 4 indicators can be used to cross reference:
   
**High FECoV Ab titres
 
**High FECoV Ab titres
 
**Low albumin:globulin ratio in plasma/ascites (globulin levels rise in FIP)
 
**Low albumin:globulin ratio in plasma/ascites (globulin levels rise in FIP)
 
**High levels of glycoprotein alpha 1-acid glycoprotein (AGP)
 
**High levels of glycoprotein alpha 1-acid glycoprotein (AGP)
 
**Low white cell counts
 
**Low white cell counts
*FIP antigen detection by '''immunofluorescence''' in macrophages gives a definite positive diagnosis
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FIP antigen detection by '''immunofluorescence''' in macrophages gives a definite positive diagnosis
*PM: look for characteristic lesions in vascular immune complex disease and lymphoid infiltration
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==Pathogenesis==
 
==Pathogenesis==
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==Granulomatous Enteritis==
 
==Granulomatous Enteritis==
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*Caused by feline [[Coronaviridae|coronavirus]]
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*Caused by feline  
    
===Pathology===
 
===Pathology===
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