The dog may experience a sudden improvement in mental state or appetite, and a slight rebound in white blood cells, but the dog may die suddenly the next day. Because dogs usually suffer from severe vomiting and diarrhea after being infected with parvovirus. In the later stage, due to damage to the intestinal mucosa, blood in the stool may occur. In rare cases, myocarditis may occur. The microscopic treatment cycle is usually 7-10 days, and the microscopic danger period is on the 3rd to 5th day after starting treatment. In the early stage of treatment, laboratory indicators show a rapid decrease in white blood cells, and in the later stage, a rapid increase in white blood cells.

Symptoms of parvovirus in dogs:

1. Symptoms of vomiting and diarrhea

Parvovirus in dogs is mainly reflected in the gastrointestinal aspect. The initial symptoms will be When a high fever begins, the gastrointestinal tract is affected by the increase in temperature and cannot regulate normally, so symptoms of vomiting and diarrhea with a very strong smell will occur, and sometimes blood in the stool will occur.

2. Reduced physical fitness

Due to the infection of parvovirus, the dog will not be able to eat, resulting in the loss of nutrients in the dog's body, reduced immunity, and gradually become thin, trance-like, and have no strength. , sometimes neurological convulsions occur. The occurrence of these symptoms may be due to carelessness in daily diet, so during daily feeding, be careful not to feed your dog irritating foods such as high sugar content.

3. Heart failure

When the parvovirus attack is severe, the dog will have irregular heartbeat, atrial fibrillation and murmur, and the heart function will begin to fail, which will then lead to difficulty breathing and lack of oxygen. die. If it is a chronic infection with small bacteria, no abnormality will be seen in a short period of time, but if it is not treated in time, it may endanger the dog's life.