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Related Experiment Videos

[Sodoku--a case report].

S L Hinrichsen1, S Ferraz, M Romeiro

  • 1Serviço de Doenças Infecciosas e Parasitárias, Hospital das Clínicas da Universidade Federal de Pernambuco, Recife.

Revista Da Sociedade Brasileira De Medicina Tropical
|April 1, 1992
PubMed
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Rat-bite fever, caused by Spirillum minus infection, presents with fever and malaise. Early diagnosis via darkfield microscopy and penicillin treatment led to symptom improvement in a patient with a forehead ulcer.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Clinical Medicine

Background:

  • Rat-bite fever (RBF) is a zoonotic disease caused by Spirillum minus or Streptobacillus moniliformis.
  • Rodent exposure is the primary transmission route for RBF.
  • Prompt diagnosis and treatment are crucial for managing RBF symptoms.

Observation:

  • A patient presented with fever, malaise, and a forehead ulcer following known rodent exposure.
  • Spirillum minus was identified in ulcer exudate using darkfield microscopy.
  • The clinical presentation suggested a diagnosis of rat-bite fever.

Findings:

  • Darkfield examination confirmed the presence of Spirillum minus in the patient's ulcer exudate.
  • The patient received penicillin for treatment.

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  • Clinical improvement of fever and malaise was observed after penicillin administration.

    • Implications:

    • This case highlights the importance of considering RBF in patients with relevant exposure history and suggestive symptoms.
    • Darkfield microscopy is an effective diagnostic tool for identifying Spirillum minus in RBF cases.
    • Penicillin remains a viable and effective treatment for Spirillum minus infections, leading to favorable patient outcomes.