A three-month-old boy is being treated for meningococcal in Tasmania - the state's third case of the potentially deadly disease in a fortnight.
The baby boy is in a stable condition in the Royal Hobart Hospital after testing completed on Friday confirmed he had the rare disease.
A 16-year-old Hobart girl died last week after contracting meningococcal.
Several days later a 20-year-old man also contracted the disease. He has since been released from hospital.
The state's health department does not believe any of the three cases are linked.
Antibiotics have been given to the boy's family and others who may have been in close contact with him.
On average, Tasmania has five or six meningococcal cases a year.
Symptoms of the disease can include fever, severe muscle aches and pains, headaches, feeling unusually unwell and confusion or drowsiness.
Late in the illness a rash can occur.
Cases of meningococcal are slightly more common during winter and spring.
A person with meningococcal disease can deteriorate rapidly and anyone suspected of having it should seek emergency medical treatment immediately.
