Undiagnosed undifferentiated fever in Far North Queensland, Australia: a retrospective study.

Objectives: This study aimed to describe the causes of acute undifferentiated fever (AUF) and to develop a robust definition of undiagnosed undifferentiated fever (UUDF).

Methods: This was a retrospective study of AUF over 3 years (2008-2011) in an Australian tertiary hospital. Request for laboratory investigation of one or more infectious agents was used as the search tool.

Acute undifferentiated fever in Asia: a review of the literature.

Acute undifferentiated fever (AUF) is a temporary febrile illness accompanied by non-specific symptoms. Previous studies in Asia have primarily focused on delineating specific agent(s) causing AUF. None were designed to assess the frequency of undiagnosed cases.