title: Infectious causes of fever of unknown origin.
abstract: The causes of fever of unknown origin (FUO) are changing because advances in clinical practice and diagnostics have facilitated the identification of some infections. A variety of bacterial infections can cause FUO, and these can be divided into those that are easy to identify using culture and those that require serological or molecular tests for identification. A number of viral, parasitic and fungal infections can also cause prolonged fever. This article summarises the clinical features and diagnostic strategy of these infections.
authors.affiliation: London, UK, and Imported Fever Service, RIPL, Public Health England, Porton Down, UK alastair.mcgregor@uclh.nhs.uk.
authors.forename: Alastair C
authors.initials: AC
authors.lastname: McGregor
authors.affiliation: Hospital for Tropical Diseases, London, UK, and London School of Hygiene and Tropical Medicine, London UK.
authors.forename: David A
authors.initials: DA
authors.lastname: Moore
mesh_terms: D001424:Bacterial Infections / Q000382:microbiology; D003937:Diagnosis, Differential; D005335:Fever of Unknown Origin / Q000382:microbiology* / Q000469:parasitology* / Q000821:virology; D006801:Humans; D007244:Infectious Mononucleosis / Q000821:virology; D009181:Mycoses / Q000382:microbiology; D010272:Parasitic Diseases / Q000469:parasitology
keywords: Fever; chronic; origin; pyrexia; unknown