Atlas of livestock parasites
digitized collection of microscopical preparations

Atlas of Parasites Contents Information sources Glossary Administration

Paragonimus kellicotti



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Distribution: North America. Other similar species of Paragonimus that infect  domestic animals, humans, and wildlife occur in South and Central America, Africa, and Asia.               

Host: Lung parenchyma of cats, dogs, pigs, goats, minks, and various other wild mammals.     

Life Cycle: Snails are infected by the larval stage emerging from eggs released in the feces of definitive hosts. Crayfsh serve as the second intermediate host. Dogs and cats acquire infection by ingesting the metacercaria in the tissues of crayfsh or paratenic hosts.           

Diagnosis: A sedimentation technique (recommended) or fecal fotation (less reliable) can be used to detect the yellow-brown, operculate eggs, which have a thickened ridge in the shell wall along the line of the operculum.

Size: 75–118 × 42–67 µm             

Clinical features: Infection may be subclinical or cause eosinophilic bronchitis and granulomatous pneumonia, resulting in chronic cough and lethargy. Infections can be fatal.       


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