Chlamydia is the leading cause of hospitalisation for koalas. 48% of the population are currently living with the disease. At its worst, chlamydia is fatal. It also causes blindness as well as infertility, preventing koala populations from recovering their numbers. 

Your support could help support a program testing the effectiveness of giving koalas a double dose of an existing chlamydia vaccine, to increase immunity in the population. It could be vital to preventing extinction.