SUMMARY Strongyloses infection in 2 infant orangutans (Pongo pygmaeus) resulted in their death at 8 and 9 months of age after a clinical illness characterized by anorexia, lethargy, anemia, and signs of respiratory tract disease. The orangutans did not have diarrhea or other clinical evidence of gastrointestinal illness, and did not have increased eosinophil counts. One orangutan had purulent meningitis from which Clostridium butyricum was isolated. Strongyloides larvae were identified throughout all layers of the small intestines and colon, and in the lungs, lymph nodes, and connective tissue around the aorta, pancreas, and adrenal glands in both orangutans. In addition, larvae were found in the brain, kidneys, pericardium, testicles, and thyroid and prostate glands of one orangutan.
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McClure et al. (1973) studied this question.