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Table 1 Descriptive characteristics of 126 koalas in the study population

From: Koala retrovirus diversity, transmissibility, and disease associations

Category

US zoos (%)

Australian zoos (%)

St. Bees Island (wild) (%)

Total (%)

Sex

 Male

38 (48.7)

12 (44.4)

8 (38.1)

58 (46.0)

 Female

29 (37.2)

14 (51.9)

13 (61.9)

56 (44.4)

 Joey

11 (14.1)

1 (3.7)

0 (0)

12 (9.5)

Health status classificationa

 Healthy

29 (37.2)

16 (59.3)

21 (100)

66 (52.4)

 Leukemia-lymphoma

14 (17.9)

2 (7.4)

0 (0)

16 (12.7)

 Other cancers

5 (6.4)

2 (7.4)

0 (0)

7 (5.6)

 Other causes

30 (38.5)

7 (25.9)

0 (0)

37 (29.4)

Total

78 (61.9%)

27 (21.4%)

21 (16.7%)

126

  1. aCauses of death at study conclusion are listed for other than alive. Other cancers included osteoma, metastatic sarcoma, osteosarcoma, hemangiosarcoma, and mammary carcinoma. Other causes of death included anemia, old age, euthanasia, acute respiratory illness, intestinal volvulus, torsion, intussusception, pulmonary interstitial fibrosis, unknown, and early young pouch death. The most common lesion in koalas that were classified with death at old age was degenerative joint disease