Canine coronavirus infection is an acute gastrointestinal infectious disease, and its clinical features are diarrhea and vomiting. This disease can occur alone and is often mixed with canine parvovirus, which aggravates the course of the disease.
【Pathogens and Epidemiology】
1. Pathogen: Canine coronavirus (CCV), which is a member of the genus Coronavirus. The virus mainly exists in the gastrointestinal tract of the sick dog and is excreted with feces. The transmission route is mainly through contaminated feed and drinking water, which is mainly through the digestive tract infection.
2. Source of infection: Sick dogs and poisoned dogs are the main sources of infection. The virus is highly resistant to the external environment. The virus in feces can survive for 6 to 9 days, and the pollutants can remain contagious in water for several days. Once this disease occurs, it is difficult to control its spread and epidemic within a certain period of time.
3. Susceptible animals: Canines are susceptible, and some can infect pigs and cats. Dogs of all ages, breeds and genders are sensitive to CCV, with the highest incidence rate at 2 to 4 months.
4. Epidemic characteristics: The incidence of CCV infection is very low, about 30%. It is distributed worldwide. It is often caused by the cold winter and spreads rapidly, and it often affects all the dogs within a few days.
【Symptoms】
The symptoms of puppies are severe after infection, mainly manifested as gastroenteritis.
The initial vomiting lasts for several days, and the symptoms of vomiting are not relieved or stopped after diarrhea. The diarrhea feces are pasty, semi-pashy or even watery, orange or green, and watery stools often contain mucus and blood.
Depressed, like to lie down, and feel anorexia, but the body temperature is not high. The sick dog quickly develops symptoms of dehydration and loses weight. Especially if the puppies are not treated in time, they often die within 1 to 2 days. Adult dogs have mild symptoms.
【Diagnosis】
The clinical symptoms and epidemiology of this disease are similar to those of canine parvovirus and rotavirus infections, and they are often mixed infections, making it difficult to distinguish them. Feces of sick dogs should be collected for electron microscopy, virus isolation or fluorescent antibody examination, which is conducive to the diagnosis of the disease.
【Prognosis】
There are more puppies than morbidity, and the mortality rate of adult dogs is relatively low.
【Prevention and Treatment】
Special treatment uses serum, domestic five- and six-collateral serum. Supportive therapy maintains electrolyte and acid-base dysbalancing, while applying broad-spectrum antibiotics to prevent secondary infections. The focus is on prevention.