Diagnostic Reagents, Animal Diseases, Medical Equipments

Feline Calicivirus

Jun 23,2023
What is FCV?

FCVis a virus that causes upper respiratory infections (URIs) in cats.

FCV is a highly contagious virus that causes mild to severe respiratory infections and oral disease in cats. It is especially common in shelters and breeding areas, often infecting kittens. Most cats fully recover from calicivirus infection, but rare strains are especially deadly.

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How do cats get infected?

The virus spreads through direct contact with saliva, nasal mucus, and eye secretions from infected cats, as well as aerosol droplets spread when cats sneezes. Laboratory tests have also found the virus in urine, stool and blood. Cats typically shed the virus within two to three weeks of becoming infected, but some cats become chronic carriers and shed the virus on and off for several months.


What are the symptoms of an infected cat?
After exposure to FCV, the incubation period ranges from 2 to 14 days before symptoms appear. The virus may initially infect the lining at the back of the mouth. After the virus replicates there, it may spread to other organs through the blood. However, FCV preferentially infects the lining of the mouth and tissues within the lungs. Most cats will develop an upper respiratory infection, and in more severe cases, the virus can travel to the lungs, causing pneumonia.


How is calicivirus diagnosed?
Diagnosis is made by collecting samples of cells and secretions from the mouth, nose, or eyes and submitting these samples to a laboratory for specialized testing, such as virus isolation, PCR (polymerase chain reaction) testing, or immunohistochemical staining.
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