Changes

==Description==

==Description==

A highly contagious acute respiratory disease spread by close contact causing larngitis, *[[Trachea Inflammatory - Pathology#Infectious causes of tracheitis|tracheitis]], [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchitis]] and in some cases a [[Nasal Cavity Inflammatory - Pathology#Rhinitis|rhinitis]].

A highly contagious acute respiratory disease spread by close contact causing larngitis, [[Trachea Inflammatory - Pathology#Infectious causes of tracheitis|tracheitis]], [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchitis]] and in some cases a [[Nasal Cavity Inflammatory - Pathology#Rhinitis|rhinitis]].

Multiple agents are implicated in the disease including [[Canine Adenovirus 1|Canine ''Adenovirus'' 1 ]],[[Canine Adenovirus 2|Canine ''Adenovirus'' 2]],[[Canine Herpesvirus 1|Canine ''herpes'' virus]],[[Canine Parainfluenza - 2|Canine Parainfluenza - 2]],[[Canine Distemper Virus|Canine Distemper Virus]], [[Category:Mycoplasmas|Mycoplasma species]] and [[Bordetella bronchiseptica|''Bordetella bronchoseptica'']]. Most cases involve a primry viral infection and sometimes with secondary bacterial involvement. ''B.bronchoseptica'' adheres to ciliated epithelial cells in the trachea where it proliferates and releases toxins causing epithelial necrosis and prevents[[Diseases of the nasal cavity and sinuses#Mucociliary escalator| ciliary clearance]].  Mortality rates are very low and it is a common disease in dogs that are housed in groups.

Multiple agents are implicated in the disease including [[Canine Adenovirus 1|Canine Adenovirus 1 ]],[[Canine Adenovirus 2|Canine Adenovirus 2]],[[Canine Herpesvirus 1|Canine herpes virus]],[[Canine Parainfluenza - 2|Canine Parainfluenza - 2]],[[Canine Distemper Virus|Canine Distemper Virus]], [[Category:Mycoplasmas|Mycoplasma species]] and [[Bordetella bronchiseptica|''Bordetella bronchoseptica'']]. Most cases involve a primry viral infection and sometimes with secondary bacterial involvement. ''B.bronchoseptica'' adheres to ciliated epithelial cells in the trachea where it proliferates and releases toxins causing epithelial necrosis and prevents[[Diseases of the nasal cavity and sinuses#Mucociliary escalator| ciliary clearance]].  Mortality rates are very low and it is a common disease in dogs that are housed in groups.

==Signalment==

==Signalment==