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Acute toxoplasmosis in squirrel monkeys

M Inoue1

  • 1Department of Veterinary Pathology, Faculty of Agriculture, Yamaguchi University, Japan.

The Journal of Veterinary Medical Science
|July 1, 1997
PubMed
Summary

Acute toxoplasmosis in squirrel monkeys presents with systemic disease, affecting the liver and lungs. The study identified tachyzoites within these lesions, confirming Toxoplasma gondii infection.

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Area of Science:

  • Veterinary Pathology
  • Primate Medicine
  • Parasitology

Background:

  • Toxoplasmosis is a significant parasitic disease with a broad host range.
  • Squirrel monkeys (Saimiri sciureus) are susceptible to various infectious agents in captive environments.

Observation:

  • Review of five cases of acute toxoplasmosis in caged squirrel monkeys.
  • Systemic disease characterized by hepatocellular necrosis in the liver and interstitial pneumonia in the lungs was observed.

Findings:

  • Tachyzoites of Toxoplasma gondii were identified within hepatic, pulmonary, and splenic lesions.
  • Immunohistochemistry confirmed tachyzoite reactivity with T. gondii antibodies.
  • Electron microscopy revealed intracellular tachyzoites within membrane-bound vacuoles.

Implications:

  • This study highlights acute toxoplasmosis as a potential cause of mortality in captive squirrel monkeys.
  • Understanding the pathology is crucial for diagnosing and managing toxoplasmosis in non-human primates.
  • Further research into transmission and prevention in captive primate settings is warranted.

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