Causes
Feline calicivirus, highly contagious through secretions. Common in young cats, colonies and shelters. The virus is resistant in the environment.
Diagnosis
Clinical signs (the mouth ulcers are a strong pointer) plus specific tests in complicated cases.
Treatment
Supportive care: hydration, pain relief, palatable soft food, cleaning the eyes and nose. Isolate from other cats.
Prevention
VACCINATION (it is part of the feline core trivalent vaccine), hygiene, reducing overcrowding.

