Ewingella (2003) A fatal case of Waterhouse-Friderichsen syndrome resulting from
infection in a previously healthy 74-year-old woman is reported. The patient died suddenly
within 14 hours after presentation. The diagnosis of Waterhouse-Friderichsen syndrome as
the cause of death was established post mortem based on autopsy findings, microscopic
examination, measurement of serum procalcitonin concentration (113 ng/ml), and outcome of
postmortem bacteriologic cultures that grew in heart and spleen blood samples. Since the
introduction of as a new group in the family in 1983, more recent case studies have
established its clinical significance and pathogenic potential to cause severe, life-threatening
bacteremia and sepsis. is a rare pathogen that should be added to the list of unusual bacteria
causing Waterhouse-Friderichsen syndrome.