- Nematode (roundworm) parasites cause 2 distinct syndromes:
- A. cantonensis (rat lungworm): one of the most common causes of eosinophilic meningitis, Fig
- A. costaricensis: cause of eosinophilic gastroenteritis (abdominal angiostrongylus).
- Rats are definitive hosts; mollusks (snails and slugs) are intermediate hosts.
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