How many koalas die from diseases?

A major threat to the koala populations of Australia is the organism chlamydia, which has four major effects:

• blindness
• pneumonia
• urinary tract infection
• reproductive tract infections, ultimately rendering animals infertile.

Scientists are still working on a cure, as this disease is decimating some of the populations on the mainland.

Koalas are also susceptible to leukaemia and skin cancers.