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Coronavirus infection in dogs
Last reviewed: 08.07.2025
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Canine coronavirus infection is a contagious intestinal infection that usually causes mild illness. However, it can be severe in young puppies and dogs with underlying infectious diseases. The infection is common worldwide and affects dogs of all ages.
The coronavirus is transmitted through contact with infected oral or fecal secretions. Once infected, the virus continues to be excreted in feces for several months.
[ Symptoms of coronavirus infection in dogs
Symptoms of the disease can range from no symptoms at all (the most common form) to sudden onset of severe diarrhea, which usually occurs in community dogs. Dehydration may develop with severe diarrhea.
Early signs of the disease include depression with loss of appetite, followed by vomiting and foul-smelling yellow or orange diarrhea that ranges from soft to runny. The stool may contain blood. Unlike parvovirus, fever is rare.
There are currently no tests that can diagnose coronavirus infection during the acute phase of the disease. Retrospective diagnosis is established based on an increase in the antibody titer in the blood serum 2-6 weeks after the first test performed during the disease.
Treatment of coronavirus infection in dogs
Treatment should be supportive and include hydration and control of vomiting and diarrhea as described for parvovirus infection. Because the disease is mild, antibiotics are not prescribed in most cases.
Prevention of coronavirus infection in dogs
A vaccine has been developed to control coronavirus infection. However, since coronavirus rarely causes fatal cases and responds well to treatment, vaccination is not recommended.