width=device-width, initial-scale=1, minimum-scale=1" name="viewport"/>Young adult in a critical condition with meningococcal B | Nine.com.au. Share articleA young adult is in a critical condition after being diagnosed with invasive meningococcal disease. Abundant meningococci bacteria observed, with a notably absence of white blood cells in the spinal fluid from a critically ill meningitis patient. South Australia’s health department has identified multiple people who have come into contact with the case.