Colds In Cats And Kittens
- Describes the symptoms and warns which of them indicate serious disease. Includes information about the two most common causes.
- http://petcaretips.net/cat_cold.html

Cat Flu
- Explains the signs, complications, treatment, and prognosis, as well as an outline of the occurrence in different breeds.
- http://www.provet.co.uk/health/diseases/catflu.htm

The University of Glasgow: Cat Flu
- FAQ for owners on symptoms, prevention, and the two principle causes, feline calicivirus and herpesvirus.
- http://www.gla.ac.uk/companion/ocatflu.htm

Feline Upper Respiratory Tract Disease - Cat Flu
- Description of the primary causes of the condition, symptoms to look for, diagnosis, treatment, how infection occurs, prevention and control measures.
- http://www.fabcats.org/catflu1.html