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Companion Animal Practice
Clinical update on feline respiratory pathogens
  1. Susan Dawson

    Susan Dawson graduated from Glasgow in 1983. She is currently the Intervet senior lecturer in small animal studies at Liverpool. She holds a PhD for studies on feline calicivirus.

  2. Alan Radford

    Alan Radford graduated from Liverpool in 1993. He is currently a lecturer in small animal studies at Liverpool. He holds a PhD for studies on the mechanisms of feline calicivirus persistence.

  3. Rosalind Gaskell

    Rosalind Gaskell graduated from Bristol in 1971. She is currently professor of infectious diseases at Liverpool. She holds a PhD for studies on feline herpesvirus infection.


INFECTIOUS respiratory disease in cats is a significant clinical problem. It is most commonly seen where cats are grouped together and especially in young kittens. Two viruses - feline herpesvirus (FHV) and feline calicivirus (FCV) - have been known for many years to be involved in the aetiology of feline respiratory disease while, more recently, other pathogens, such as Bordetella bronchiseptica, have also been found to be important. The role of other bacteria and mycoplasmas has not been fully established as yet. Chlamydophila felis is more frequently associated with predominantly conjunctival disease and, although upper respiratory tract signs may also occur, these are generally mild. This article describes some of the most important features of the three main respiratory pathogens, FHV, FCV and B bronchiseptica.

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