Another case of meningococcal disease has been diagnosed in Hobart, the fourth in a series of infections in Tasmania in two weeks.

The ABC reports that the most recent patient is believed to be a man. 

The previous case is a three month old baby is believed to be in a stable condition in Adelaide’s Women's and Children's Hospital.  The parents of the child, identified as "Violet", discovered red spots on her stomach and legs and sought medical help.

A 20-year old man was before that, and he has already released to hospital.

But the first case, 16-year-old Sarah Rose Beltz died after contracting the W strain of meningococcal disease earlier this month.