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Primary causes of death in adult* Yerkes chimpanzees
| 1966–1991 | 1992–2008 | |
|---|---|---|
| General category | n (%) | n (%) |
| Meningitis | 4 (11) | – |
| Heart disease | 4 (11) | 21 (36) |
| Enterocolitis | 6 (16) | – |
| Pneumonia | 2 (5) | – |
| Renal disease | 2 (5) | 9 (16) |
| Trauma | 1 (3) | 7 (12) |
| Miscellaneous | 19 (50) | 21 (36) |
| 38 | 58 |
>10 years of age.
