Cat flu is a general name given to infectious acute feline respiratory disease caused by a number of organisms. It is commonly seen in cats that have not been vaccinated, especially when they are kept in an over-crowded, dusty environment with poor ventilation and high humidity.
A huge majority (almost 80%) of the infections are caused either by feline calicivirus (FCV) or feline rhinotracheitis virus (FRV or herpes virus). The rest are caused by organisms known as Feline coronavirus, Bordetella bronchiseptica, Pasturella multocida, Mycoplasma (parasitic bacteria) or Chlamydophila felis. Many cases of cat flu are tested positive for infection by more than one of these infectious agents.
Cat flu is a contagious disease and even cats without visible signs of the infection may pass it on to a healthy cat. The symptoms of cat flu include:
