Samiksha Jaiswal (Editor)

Angiostrongylus costaricensis

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Kingdom  Animalia
Family  Metastrongylidae
Phylum  Nematoda
Order  Strongylida
Class  Secernentea
Genus  Angiostrongylus
Rank  Species
Angiostrongylus costaricensis wwwfiocruzbriocmedia20111512perfilproteomico
Scientific name  Angiostrongylus costaricensis
Similar  Angiostrongylus, Angiostrongylus cantonensis, Veronicellidae, Angiostrongylus vasorum, Sarasinula

Angiostrongylus costaricensis

Angiostrongylus costaricensis is a species of parasitic nematodes.


Its distribution include Brazil.


Humans and rodents are the definitive hosts. The main rodent host is the Cotton Rat.

Mollusc are the intermediate host and are infected through ingestion or penetration of the foot by L1 infective larvae from infected feces.

  • Limax maximus
  • slugs from the family Veronicellidae
  • Pathology

    Pathology is due to both the adults and the eggs. Adults in the ileo-caecal arterioles cause an inflammatory (eosinophilic) response in humans. In the Cotton rat the adult worms cause local haemorrhages.

    The intestinal wall is also affected. In humans there is a thickening of the intestinal wall (ileum, appendix and caecum). In rats with heavy infestations there is a yellow discolouring of the serial surface of the intestinal walls.

    Clinical signs and diagnosis

    Abdominal pain which presents as a palpable mass on clinical examination. Anorexia Diarrhoea Vommiting

    In the blood and tissue biopsy there is eosinophillia. Other ways for diagnosis from a biopsy are eggs and larvae in the blood vessels. Imaging go the liver and intestine can also be helpful. Serology is sometimes used to diagnose from a blood sample and there are specific ELISA.


    Angiostrongylus costaricensis Wikipedia

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