\u0022But because the effects of chlamydia are so debilitating, I think it\u0027s totally worth it.\u0022
Researchers use binoculars to spot koalas in eucalyptus trees, then construct circular enclosures around the tree bases with doors leading into cages. After a few hours or days, the koalas will eventually climb down from one tree to seek tasty leaves on another, and wander into the harmless traps.
When the first vaccinated koala was returned to her habitat on March 9, the scientists placed her cage at the base of a tree and opened the door. She quickly emerged and bounded up the tree trunk.Article content The origins of chlamydia in koalas aren’t confirmed, but scientists believe it’s likely the marsupials initially caught the disease from exposure to the feces of infected sheep and cattle. Then it’s spread sexually, or passed from mother to offspring.Article content
Crowther has been monitoring a population of koalas in northern New South Wales for more than a decade. In 2008, 10% of animals tested there were infected with chlamydia. Today that rate is 80%.The other threats koalas face — including habitat destruction from land clearing and climate-enhanced wildfires — may increase their stress levels, weakening their immune systems and making them more susceptible to diseases including chlamydia, said Crowther.
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