Difference between revisions of "Picornaviridae"

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#REDIRECT[[:Category:Picornaviridae]]
 
 
{{toplink
 
|linkpage =Viruses
 
|linktext =VIRUSES
 
|pagetype=Bugs
 
}}
 
<br>
 
 
 
=Introduction=
 
 
 
 
 
=Morphology=
 
*Very small RNA viruses
 
*Much antigenic variation
 
*Subtypes evolve and do not cross-protect
 
*4 capsid proteins (VP1-VP4), with VP1 providing neutralizing target
 
 
 
=Virulence and Pathogenesis=
 
*Cytopathic effect of all viruses is an overnight '''cell rounding''' and '''pyknosis'''
 
 
 
=Epidemiology=
 
*Very resistant
 
*Can survive several months on '''fomites'''
 
*Infect via upper respiratory tract or buccal cavity and spread to target organs after viremia
 
 
 
=Types and Subtypes=
 
3 Main Genera:
 
===Enteroviruses===
 
*[[Swine Vesicular Disease]]
 
*[[Porcine Enterovirus]]
 
===Apthoviruses===
 
*[[Foot and Mouth Disease (FMDV)]]
 
===Rhinoviruses===
 
*Subclinical cold viruses
 
*Equine rhinovirus (picornavirus type 1 and 2) in [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|rhinitis]], see [[Respiratory Viral Infections - Pathology#Equine rhinovirus|respiratory infections]]
 
*Bovine rhinovirus may cause mild [[Respiratory Viral Infections - Pathology#Bovine rhinovirus|respiratory infections]]
 
 
 
 
 
==Aphthoviruses==
 
*[[Cavity & Gingiva - Pathology#Foot and Mouth disease|Foot and Mouth Disease Virus]]
 
**May also involve [[Muscles Inflammatory - Pathology#Foot and Mouth disease|muscles]]
 
**May cause [[Viral skin infections - Pathology#Other viruses|skin lesions]]
 
 
 
==Enteroviruses==
 
*[[Cavity & Gingiva - Pathology#Swine Vesicular Disease|Swine Vesicular Disease Virus]]
 
**May cause [[Viral skin infections - Pathology#Other viruses|skin lesions]]
 

Latest revision as of 11:22, 23 May 2010