Dog parvo symptoms

Symptoms of parvo in dogs

There are two types of parvoviruses that infect dogs. Canine parvovirus-1 (CPV-1), also known as "minute virus of canines", is a relatively nonpathogenic virus that sometimes is associated with gastroenteritis pneumonitis, and/or myocarditis in very young puppies. Canine parvovirus-2 (CPV-2) is responsible for classic parvoviral enteritis. CPV-2 usually causes signs 5 to 12 days after the dog is infected via the fecal-oral route, and it preferentially invades and destroys rapidly dividing cells (i.e., bone marrow progenitors, intestinal crypt epithelium).

Doberman Pinschers, Rottweilers, Pit Bulls, and Labrador Retrievers may be more ar risk than other breeds. The parvo destruction of intestinal crypts may produce villus collapse, diarrhea, vomiting, intestinal bleeding, and subsequent bacterial invasion; however, some animals have mild or even subclinical disease. Many dogs are initially presented because of depression, anorexia, and/or vomiting not diarrhea. Diarrhea is often absent for the first 24 or 48 of illness and may not be bloody if and when it does occur. Vomiting is usually a prominent finding and may be severe enough to cause esophagitis. Also, puppies that are infected in utero or before 8 weeks of age may develop myocarditis.

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