Wildlife Conservation

Wild Koala Chlamydia Disease Crisis

Koala populations are devastated by chlamydia, causing blindness, reproductive failure, and painful urinary disease in animals already stressed by habitat loss.

Key Facts

Chlamydia affects up to 90 percent of koalas in some Australian populations
The disease causes conjunctivitis leading to blindness and painful cystitis
Habitat fragmentation concentrates koalas in remnant trees increasing disease spread
A vaccine in late-stage trials shows promise for reducing disease prevalence

Welfare Considerations

Koalas with chlamydia experience chronic urinary pain, progressive blindness, and eventual inability to feed or reproduce. The combination of habitat loss that forces koalas into contact with more individuals and a disease that is difficult to treat creates a welfare crisis. Rehabilitation centers treat hundreds of koalas annually but cannot address the population-level disease burden without vaccination programs.

What You Can Do

Support koala chlamydia vaccine research and deployment programs
Donate to koala rehabilitation centers treating disease-affected animals
Advocate for koala habitat protection that reduces disease transmission through crowding
Plant koala food trees to reduce the need for koalas to travel and encounter others