influenza

Symptoms include sneezing, discharge of fluid from the eyes, loss of appetite, fever, ulcers, on tongue, drooling, and apathy. If properly treated, the cat should be cured in a week or ten days, but if neglected influenza may open the way for serious viral disease. Even a simple cold is reason enough to keep a cat in a warm place, well protected from dampness and drafts.

SOURCE: cat.consultinghealth.com