title: Eosinophilia: causes and pathobiology in persons with prior exposures in tropical areas with an emphasis on parasitic infections.
abstract: Eosinophilia in patients exposed to tropical or subtropical environments is caused most commonly by helminth (worm) infections. Besides a detailed exposure history, the diagnostic approach must consider other infections and noninfectious causes of eosinophilia, as treatments for many of these disorders differ.
authors.affiliation: Helminth Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 4 Center Drive, Room B1-03, Bethesda, MD 20892, USA. yjkim@niaid.nih.gov
authors.forename: Yae-Jean
authors.initials: YJ
authors.lastname: Kim
authors.forename: Thomas B
authors.initials: TB
authors.lastname: Nutman