Labrador
Coronatte virus mainly threatens dogs without injection of vaccine, and the incidence of puppies is higher than adult dogs. This kind of virus is available throughout the country, because the treatment effect of the disease is not very ideal, so it is mainly for prevention.
1. Popular disease
This disease can be infected with dogs such as dogs, minks (details) and foxes. Different varieties, gender and age dogs can be infected, but puppies are the most vulnerable to infection, with almost 100%of the incidence, and the mortality rate is 50%. Disease dogs and bands Poison dogs are the main source of infection. The virus is transmitted to health dogs and other susceptible animals through direct contact and indirect contact through the respiratory tract and digestive tract. This disease can occur all year round, but it occurs mostly in winter. Climate mutations, poor sanitary conditions, large density of dog clusters, weaning and long -distance transportation can induce the disease.
2. Symptoms and pathological changes
The incubation period is 1 to 8 days. This disease is infected rapidly, which can spread the whole group within a few days. Generally, let's show drowsiness, weakness, and vomiting repeatedly. Later, the stool is passed from paste, semi -paste to water, orange or green, mucus or blood, fever or no fever, reduced white blood cells, rapid dehydration, death. As the age increases, the mortality rate decreases. Some cases do not show clinical symptoms. Coronatte virus is often mixed with small viruses, which constitutes the popularity of dog diarrhea.
The lesions of the dissection are mainly gastroenteritis. The intestinal wall is thin, the intestinal tube is full of white or yellow -green, purple -red blood -like liquid, the gastrointestinal mucosa is congested, bleeding and shed, and there is mucus in the stomach. Others such as gaunting lymph nodes and gallbladder cysts. The tissue inspection mainly shows that the small intestinal velvet is shorter, fused, and deep in hidden nests. The ratio of the length of the fluff to the depth of the hidden nest has changed significantly. Epithelium cell degeneration, empty bubbles appear in cytoplasm, inherent layer of edema of mucosa, inflammatory cells infiltration, flat epithelial cells, and cup -shaped cells to empty.