Common viral diseases and their harm in dogs

With the improvement of people’s living standards, keeping dogs has become a fashion and spiritual refuge, and dogs have gradually become friends and close companions of humans. However, some viral diseases have serious harm to dogs, seriously affecting their growth, development, and reproduction, and sometimes even endangering their lives. The pathogenic factors of canine viral diseases are different, and their clinical symptoms and hazards also vary greatly. This article mainly introduces canine distemper, canine parvovirus disease Several common viral diseases and hazards, such as canine parainfluenza, provide reference for pet care and disease prevention and control.

1.Canine distemper

Canine distemper is caused by the big distemper virus of the measles virus genus of the Paramyxoviridae. The viral genome is negative strand RNA. Canine distemper virus has only one serotype. The sick dog is the main source of infection. There are a large number of viruses in the nose, eye secretions and saliva of the sick dog. There are also some viruses in the blood and urine of the sick dog. Direct contact between healthy dogs and sick dogs will cause virus infection, The virus is mainly transmitted through the respiratory tract and digestive tract, and the disease can also be vertical transmission through fetal scraping. Dogs of all ages, genders, and breeds are susceptible, with puppies under 2 months old.

It can be protected by maternal antibodies, with the highest infection rate occurring at the age of 2 to 12 months. Dogs infected with canine distemper virus can receive lifelong immune protection after recovery. After infection, the main manifestation of the infected dog is a temperature increase of over 39%. The dog is mentally depressed, with decreased appetite, purulent secretions flowing from the eyes and nose, and a foul smell. The sick dog can present a biphasic heat reaction, with an initial increase in temperature, which drops to normal after 2 days. After 2 to 3 days, the temperature rises again, and the condition gradually worsens. The sick dog generally has symptoms of vomiting and pneumonia, and may develop diarrhea, showing neurological symptoms. In severe illness, it eventually dies due to extreme emaciation. Sick dogs should be promptly isolated and treated, and early infection should be treated with antiserum. At the same time, antiviral drugs and immune enhancers should be used, and targeted treatment should be taken. Vaccines can be used for immune prevention of this disease.

2. Canine parvovirus disease

Canine parvovirus is a member of the parvovirus genus of the parvoviridae family. Its genome is a single strand DNA virus. Dogs are the natural host of the disease. The disease is highly susceptible, with a fatality rate of 10%~50%. Most of them can be infected. The incidence rate of the young is higher. The disease is short in duration, high in mortality, and has serious harm to the dog industry. The disease can be transmitted through direct contact and indirect contact transmission. The infected secretion and excreta can spread the virus, The urine of rehabilitation dogs also contains viruses that can be detoxified for a long time. This disease is mainly transmitted through the digestive tract, and can worsen the condition and increase mortality due to cold and crowded weather, poor hygiene conditions, and other conditions. Infected dogs can manifest as acute myocarditis and enteritis, with sudden onset of myocarditis and rapid death. Death can occur within a few hours after onset, with diarrhea, vomiting, and increased body temperature, Rapid heartbeat and difficulty breathing. The enteritis type first presents with vomiting, followed by diarrhea, bloody stools, foul odor, mental depression, increased body temperature by more than 40 colors, dehydration, and acute exhaustion leading to death. This disease can be prevented by immunization with vaccines.

3. Canine parainfluenza

Canine parainfluenza is an infectious disease caused by parainfluenza virus type 5. The pathogen is a member of the Paramyxoviridae paramyxovirus. This virus only has! 1 serotype of canine parainfluenza, which can be infected by various ages and breeds. In young dogs, the condition is severe, and the disease spreads quickly with a short incubation period. The onset of the disease in dogs is characterized by sudden onset, increased body temperature, decreased eating, mental depression, catarrhal rhinitis and bronchitis, a large amount of purulent secretions in the nasal cavity, coughing and breathing difficulties, high mortality rate in young dogs, low mortality rate in adult dogs, and severe illness in young dogs after infection, Some sick dogs can experience nerve numbness and motor disorders. Sick dogs are the main source of infection, and the virus mainly exists in the respiratory system. Through respiratory infections, this disease can also be vaccinated for immune prevention.


Post time: May-24-2023