Verminous pneumonia

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Verminous pneumonia in a cat infected with Aelurostrongylus abstrusus

Verminous pneumonia is a rare respiratory disease of cats.

Verminous pneumonia is characterized by lesions in the lung due to parasites passing through the lung as part of their migration.

Recorded cases of verminous parasitism in cats has been reported with Aelurostrongylus spp[1][2], Capillaria aerophilia, Eucoleus aerophilus[3], Oslerus rostratus, Paragonimus spp and Troglostrongylus subcrenatus.

Lesions can vary from interstitial to chronic bronchitis to granulomatous pneumonia. There may be infiltration of eosinophils in pulmonary interstitium and bronchoalveolar spaces and atelectasis and emphysema may result due to obstruction.


  1. Atasever A & Yazar S (2009) Aelurostrongylus abstrusus pneumonia in an immunosuppressed cat. Turkiye Parazitol Derg 33(1):89-91
  2. Traversa D & Guglielmini C (2008) Feline aelurostrongylosis and canine angiostrongylosis: a challenging diagnosis for two emerging verminous pneumonia infections. Vet Parasitol 157(3-4):163-174
  3. Traversa D et al (2009) Infection by Eucoleus aerophilus in dogs and cats: is another extra-intestinal parasitic nematode of pets emerging in Italy? Res Vet Sci 87(2):270-272