Coalas have no natural immunity because clemidia was introduced relatively recently. They are also suffering from a retrovarus that's spreading among them, which is in the same family as h i v. It knocks down their immune systems and makes the clemidia more deadly. Coalas can be given antibiotics, but they r incredibly hard to treat. Michael pine at corumbin wild life hospital says trying to treat them is also very expensive. Weve cost o a diamas abo seven thousand s per qual on average to trade a comedya qual amean. Just feeding quals is ta nightmare. You've got to tro yele them all different species of ecl if