Prolonged Monosymptomatic Fever due to Yersinia Enterocolitica

Abstract
A previously healthy 14 yr old girl showed monosymptomatic hectic fever for over 3 wk with negative clinical findings. Extensive laboratory investigation revealed only elevated erythrocyte sedimentation rate and a high titer of agglutinating antibodies against Y. enterocolitica, serotype 0-3. These abnormalities disappeared upon tetracyclin therapy, after which she remained in excellent health. This unusual manifestation of yersiniosis, which was of unknown source, demonstrates that Yersinia infection should be considered in patients with prolonged febrile illnesses of obscure etiology.

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