The pneumonia caused by Metastrongylus spp worms is disseminated worldwide, especially in pigs raised outdoors.

Alternative names: Lungworm infestation, Metastrongylus spp


Pulmonary infection with Metastrongylus spp worms cause pneumonia in pigs. The worms are found in the bronchi and bronchioles.



Sows, nursery and fattening

  • Tremors.
  • Slow growth.
  • Loss of weight.
  • Pneumonia with cough.

Causes / Contributing Factors

  • Pigs raised outdoors, especially those exposed to the ground.



Analyze feces searching for typical eggs; evaluation of lung tissue.


  • Limit access of pigs to the ground.
  • Use of anthelmintic.

Atlas of pathology

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