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First Described: Respiratory disease in dogs due to canine adenovirus-2 was first described in in Canada. Proposed Causes: Canine adenovirus, canine influenza virus, parainfluenza virus, canine respiratory coronavirus, canine herpesvirus, possibly reoviruses and canine pneumovirus. Major Clinical Signs: Harsh or honking cough, serous nasal discharge, conjunctivitis, fever uncomplicated disease.
Fever, lethargy, inappetence, tachypnea, productive cough, mucopurulent nasal and ocular discharge, rarely death complicated disease. Differential Diagnoses: Upper and lower respiratory diseases such as airway collapse, bordetellosis, Streptococcus equi subsp.
Human Health Significance: Viruses that cause canine infectious respiratory disease generally are not considered zoonotic. Canine parainfluenza and reoviruses represent potential zoonoses, but the significance of this is unknown. Canine viral respiratory disease is a widespread problem where large numbers of dogs are housed indoors together, such as in shelters, commercial dog colonies, and breeding facilities.
The longer dogs are housed in a shelter situation, the greater the risk that respiratory illness will occur. Transmissible respiratory disease occasionally occurs in owned dogs after a period of contact with large numbers of other dogs at dog parks, dog sporting events such as fly ball, or dog behavior classes.
