A child with raccoon roundworm meningoencephalitis: A pathogen emerging in your own backyard?

Jan Hajek1, Yvonne Yau, Peter Kertes

  • 1Division of Infectious Diseases;

Insights

Baylisascaris procyonis, or raccoon roundworm, can cause severe brain and eye disease. Early diagnosis and treatment of Baylisascaris procyonis encephalitis in a Canadian child led to a remarkable recovery, highlighting the importance of prompt medical care.

Area of Science:

  • Veterinary Neurology
  • Parasitology
  • Infectious Diseases

Background:

  • Baylisascaris procyonis (raccoon roundworm) is a zoonotic parasite known to cause severe neurological and ocular disease in humans.
  • Human infections are typically associated with ingestion of embryonated eggs from raccoon feces.

Observation:

  • A case of Baylisascaris procyonis encephalitis in a seven-year-old boy in Canada is presented.
  • The patient exhibited severe neurological impairment consistent with neural larva migrans.

Findings:

  • The case represents the first documented instance of Baylisascaris procyonis encephalitis in Canada.
  • Prompt diagnosis and initiation of treatment led to a significant clinical recovery in the affected child.

Implications:

  • This case underscores the critical importance of maintaining a high index of clinical suspicion for Baylisascaris procyonis infections, even in regions where it is not commonly reported.
  • Early therapeutic intervention is crucial for improving outcomes and mitigating the devastating effects of raccoon roundworm encephalitis.

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