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==Introduction==
 
==Introduction==
Infectious Pancreatic Necrosis (IPN) is a '''fish disease caused by an unenveloped icosahedral [[Birnaviridae|birnavirus]] '''. It is '''highly contagious''' and mainly affects '''intensively reared salmonid species of fish''' although it has a wide host range.  
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Infectious Pancreatic Necrosis (IPN) is a '''fish disease caused by an unenveloped icosahedral birnavirus'''. It is '''highly contagious''' and mainly affects '''intensively reared salmonid species of fish''' although it has a wide host range.  
    
The '''virulence of IPNV isolates varies massively'''; while most are isolated from subclinical cases, some can produce very high mortality.
 
The '''virulence of IPNV isolates varies massively'''; while most are isolated from subclinical cases, some can produce very high mortality.
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