Young Aussie fights for life after contracting rare and deadly meningococcal disease
A young adult in Adelaide is in a critical condition on life support after contracting invasive meningococcal disease caused by serogroup B. Health officials have identified the patient’s contacts and prescribed preventive antibiotics to seven people, aiming to reduce the risk of further spread.
The case brings South Australia’s total infections this year to 22, up from 13 at the same point in 2025; 20 of this year’s cases are serogroup B. No deaths have been recorded in the state this year. Symptoms can include headache, fever, vomiting, a stiff neck and sensitivity to light, and health officials advise seeking urgent medical care if signs develop.
In short
- Adelaide patient is critically ill with serogroup B meningococcal disease.
- Seven close contacts have been prescribed preventive antibiotics.
- South Australia has recorded 22 cases this year, with no deaths.
Explained simply
Meningococcal disease is caused by bacteria that can infect the lining around the brain and spinal cord, or enter the bloodstream. Invasive cases are serious and can worsen quickly; serogroup B is one type of the bacteria.
The bacteria spread through close or prolonged contact with an infected person’s saliva or respiratory droplets. Health officials may offer preventive antibiotics to people who have had close contact, while watching for symptoms such as fever, headache, vomiting or a stiff neck.
Cases remain uncommon, but outbreaks can occur and the illness can be life-threatening. Vaccines protect against some forms of meningococcal disease, though protection depends on the type of vaccine and bacterial group.