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Koala Chlamydia Vaccine Research Program

Currumbin Wildlife Hospital Leading the Way in Urgent Koala Research

Did you know, 60% of Koala admissions at Currumbin Wildlife Hospital are due to chlamydia, a bacterial infection and one of the largest threats posed to the species’ survival?

Over the past 30 years, there’s been an exponential rise in Koala admissions at Currumbin Wildlife Hospital. The hospital treated, rehabilitated, and released almost 500 koalas from South-East Queensland and Northern New South Wales in 2020. 60% of this population were admitted sick and dying from chlamydia. Of the other 40%, many had sub-clinical chlamydia, meaning they were becoming sick. In Queensland, New South Wales and the Australian Capital Territory, Koalas are listed as endangered, and this status can be attributed to the widespread disease.

In 2020, Currumbin Wildlife Hospital launched the Koala Chlamydia Vaccine Research Program and is now vaccinating all Koala patients against chlamydia prior to their release back into the wild, signifying a major milestone for the protection of Koalas.

Currumbin Wildlife Hospital’s Senior Vet, Dr Michael Pyne OAM is leading the way in this urgent Koala research and working hard to prevent the imminent localised extinction of the Koala. Dr Pyne has been treating Koalas for more than twenty-five years and believes prevention is better than cure.

Currumbin Wildlife Hospital Koala Chlamydia Vaccine Research Program Results

CWH Golden Circle

Over 500 Koalas have been vaccinated against chlamydia

All Koalas admitted to Currumbin Wildlife Hospital will be vaccinated against chlamydia

CWH Golden Circle

Currently tracking over 30 Koalas in the Elanora region

This tracking includes 16 Koala joeys

CWH Golden Circle

40 joeys have been born in the region

6 grand joeys have been born

A koala bear perched in a tree

The Disease

Koala chlamydia is a bacterial infection and is one of the leading causes of death for Australian Koalas. If left untreated, chlamydia can cause infertility and permanent blindness.

Chlamydia can present in Koalas in two ways. The classical presentation is severe conjunctivitis which is spread through close contact and in advanced cases can cause blindness. The other form of chlamydia is a sexually transmitted infection that can cause fatal urinary and reproductive tract disease. Some Koalas can have a reproductive chlamydial infection that shows no obvious clinical signs but does prevent them from breeding.

Chlamydia is the most common and well-known disease of wild Koalas, estimated to be found in up to 48% of the population, and in some parts of Australia, infection rates are as high as 90%.

Each Koala suffering from chlamydia costs Currumbin Wildlife Hospital approximately $7000 to treat with a minimum 4-week course of antibiotics. Many patients require extended hospital stays of up to 10 weeks and often suffer gut complications from antibiotic treatment.

The Vaccine

Queensland University of Technology (QUT) Professor Ken Beagley led the development of the chlamydia vaccine for Koalas which is produced at QUT.

The chlamydia vaccine has been in development for many years, but this is the first time the vaccine has been used in a wild area with a highly diseased population.

The group led by Beagley at QUT has developed a vaccine to target chlamydial infection in Koalas. The vaccine requires a prime and booster immunisation 30 days apart. Preliminary data suggests this vaccine elicits long-lasting immunity.

A veterinarian examines a koala, administering medical care while the animal lies on a padded surface in a clinical setting.
A woman in a green shirt joyfully holds a blue and green kite against

The Research Trial

The research study is targeting the koala population in Elanora, a neighbouring suburb of Currumbin, and the most diseased population on the Gold Coast. The objective is to capture and vaccinate 10% of the young adult Koalas per year from the Elanora population and monitor the Koala population and level of chlamydia over the following 5 years.

After vaccination, the Koalas are released back into the diseased population with a GPS tracker allowing the vaccinated koalas to be monitored and recaptured every 3-6 months for a health assessment.

The Tracking Process:

  • Capture a healthy koala from Elanora.
  • Do a detailed veterinary health assessment and vaccinate the Koala.
  • Release the Koala back into the heavily diseased Elanora population with a GPS tracker.
  • Monitor the Koala regularly with visual checks, keeping records of their movements.
  • Recapture the Koala for a full health and reproductive assessment every 3-6 months for 3 years.

Research Results

The Koala Chlamydia Vaccine Research Program has resulted in valuable information about Koalas including: behaviour, habitat, and threats in the wild.

The program is ground-breaking in that it involves tagging, physical tracking and a process of re-capture, checking and release over a period of 5 years.

The information from this research will be used to understand the iconic species and prevent disease throughout Australia. It is the lynchpin to prevent the extinction of the Koala species.

A koala with bandaged legs sits on a table while a person in green scrubs stands nearby, suggesting a veterinary setting.
A person in green scrubs holds a sleeping koala wrapped in a white and blue towel.

We Need Your Support

The goal is to vaccinate every Koala that is admitted to Currumbin Wildlife Hospital for treatment, rehabilitation, and release. It’s hoped this will provide the wild population with lifelong protection against the deadly illness and allow them to produce healthy joeys.

Currumbin Wildlife Hospital’s Koala Chlamydia Vaccine Research Program relies on community support to conduct this critical work.

Chlamydia is a devastating disease and it’s crucial that we move into the prevention space now.

The positive news is we have the technology and resources available to make a significant change, it’s just a matter of enough fundraising momentum to save our Koalas from extinction.

We Would Like to Recognise the Supporters of the First Stage of This Project

Thank you to:

Tweed Coast Koala Research Hub supporters:

A veterinarian in green scrubs holds a sleeping koala wrapped in a white towel inside a brightly lit room.

Jingeri – Hello

We respectfully acknowledge the Traditional Custodians of the greater Yugambeh language region, the Country on which Currumbin Wildlife Sanctuary and Hospital are situated today. We recognise their continuing connections to the land, sky, waters (waterways), and wildlife. We thank them for caring for this Country and its ecosystems.

We celebrate Aboriginal and Torres Strait Islander cultures, and we pay our respect to Elders past and present.

Birds
Ornate, stylized green bird in flight, patterned with white dots, against a black background.