Fevers of unknown origin (FUOs) may be due to any of over 200 different disorders. We present a most unusual case of an FUO in a returning traveler from the Dominican Republic. Work-up for Q fever, Brucellosis, Bartonella, malaria and HIV were negative, but very highly elevated ESRs and ferritin levels suggested possible Legionnaire's disease. This is the third reported case of Legionnaire's disease presenting as an FUO.
Keywords: Atypical pneumonias; Encephalopathy/encephalitis; Extrapulmonary manifestations of Legionnaire's disease; FUOs in travelers; Ferritin levels.
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