Canine coronavirus disease (CCoV) is a highly infectious intestinal infection in dogs, especially puppies¹. Most CCoV infections are sub-clinical and produce few clinical signs in dogs. Occasionally an infection may cause more severe symptoms, particularly in young puppies. The most typical sign associated with CCoV is diarrhea, typically sudden in onset, which may be accompanied by lethargy and decreased appetite¹. There is no specific treatment for CCoV, but antibiotics may be useful in controlling secondary bacterial infections¹.
To answer your question, yes, CCoV is more dangerous to puppies than adult dogs. Puppies are more susceptible to the virus and are more likely to develop severe symptoms than adult dogs¹. The virus is usually short-lived but may cause considerable abdominal discomfort for a few days in infected dogs¹. It is important to note that CCoV is not the same virus as SARS-CoV-2 that causes the novel coronavirus (COVID-19)¹. CCoV does not affect people and causes gastrointestinal problems in dogs, as opposed to respiratory disease¹.
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Source: Conversation with Bing, 1/3/2024
(1) Canine Coronavirus Disease | VCA Animal Hospitals. https://vcahospitals.com/know-your-pet/coronavirus-disease-in-dogs.
(2) Canine Coronavirus: Understanding Coronavirus in Dogs. https://www.akc.org/expert-advice/news/canine-coronavirus-coronaviruses-dogs/.
(3) COVID-19 and pets: Can dogs and cats get COVID-19 …. https://www.mayoclinic.org/diseases-conditions/coronavirus/expert-answers/can-pets-get-coronavirus/faq-20486391.
(4) en.wikipedia.org. https://en.wikipedia.org/wiki/Canine_coronavirus.