Diphtheria Outbreak: Australia Faces Record Cases, Health Officials Warn

Top Summary

• What happened: Australia is experiencing its largest diphtheria outbreak since 1991, with over 220 cases reported nationwide.
• Why it matters: Diphtheria is a life-threatening, contagious infection. The outbreak highlights gaps in vaccination access, particularly for remote communities.
• What changes: Aboriginal and Torres Strait Islander people may need diphtheria booster shots every five years instead of ten. Increased vaccination efforts are underway in affected regions.
• Who is affected: Primarily Aboriginal and Torres Strait Islander people, especially those in the Northern Territory, Western Australia, and potentially Queensland.

Diphtheria Cases Surge Across Australia

Health officials are sounding the alarm as Australia faces a significant rise in diphtheria cases. This outbreak marks the largest since national records began in 1991. The Northern Territory is the most affected, with 155 cases recorded since January 1st.

Western Australia has reported 82 cases, South Australia six, and Queensland fewer than five. The outbreak is disproportionately affecting Aboriginal and Torres Strait Islander communities. A recent report from the Australian Centre for Disease Control (CDC) indicates that 94 percent of cases identified since January 1st are from these communities.

Vaccination and Prevention Efforts

Dr. Paul Burgess, the NT's chief health officer, emphasized the importance of vaccination. He noted a strong uptake of vaccines in remote NT communities. New advice suggests Aboriginal people receive a booster every five years due to the outbreak.

Health Minister Meredith Hammat in WA stressed the need for updated vaccinations, particularly for older individuals whose immunity may have waned. Queensland has made diphtheria-toxoid vaccines free for First Nations people 20 years and older.

Queensland on Alert

Manjit Sekhon, chief executive of Gidgee Healing, warned that parts of Queensland should prepare for rising cases. She cited the proximity to affected areas and frequent cross-border travel.

 

"Far North Queensland should be worried because of the geographical proximity to the affected areas,"

Sekhon said. Townsville Public Health director Steven Donohue believes the disease is likely already in North West Queensland.

 

Despite these concerns, Queensland's Chief Health Officer Marianne Gale stated there is not currently a broad community risk in the state. She advised those traveling to or receiving visitors from affected areas to be vaccinated.

Understanding the Outbreak

The CDC is working to understand the factors driving the outbreak. The current strain of diphtheria appears to have emerged recently. Milena Dalton from the Burnett Institute highlighted "health system gaps" in providing remote communities with access to vaccinations.

 

"It's really important, I think, in these outbreaks to avoid the blame game,"

Dr. Dalton stated. She emphasized issues of access, including distance, transport, and service availability.

 

The Nature of Diphtheria

Diphtheria is a life-threatening bacterial infection that is vaccine-preventable and treatable with antibiotics. There are two strains: respiratory and cutaneous. The respiratory strain can be fatal in one in ten cases, even with treatment.

Historically, diphtheria was a major cause of childhood death. Vaccination efforts in Australia started in the 1930s, leading to its near elimination by the 1950s. The largest previous outbreak since 1991 occurred in 2022 with 25 cases in Queensland.

State and Federal Responses

State leaders are responding to the outbreak with increased vaccination efforts and contact tracing. Federal Health Minister Mark Butler announced a support package to boost vaccination rates. This includes more vaccines and a surge workforce.

Dr. Sekhon urged a proactive approach:

"You don't wait for an outbreak to really become critical … we need to really take these outbreaks seriously as a population and act on it."

 

What to Watch Next

Health officials will continue monitoring case numbers and vaccine uptake across Australia. Further research into the specific strain of diphtheria and factors driving the outbreak is expected. Look for updates on the federal government's support package and its impact on vaccination rates in affected communities.