Paragonimiasis is a common parasitic infection of Zoonotic importance affecting wild felids and domestic animals like dog, cat and pig. The parasites invade the lung parenchyma and remain inside the cysts without causing heavy damage. Mortality due to paragonimiasis is extemly rare.
The disease is widely distributes in tropical/sub-tropical countries including India. This parasitic infection has been reported not only among house cats but also wild felids including lion, tiger, panthers, leopard cat, etc.
The common species known to affect house cats are Paragonimus westermanii and Paragonimus kellikoti. These are small reddish oval shaped hermaphrodite flukes which have spiny cuticle.