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Problems in identification of Francisella philomiragia associated with fatal bacteremia in a patient with chronic granulomatous disease.

ABSTRACT: Francisella philomiragia is a rare gram-negative, halophilic coccobacillus with bizarre spherical forms on primary isolation. A case of F. philomiragia bacteremia in a 24-year-old patient with chronic granulomatous disease is reported. Identification of F. philomiragia was problematic with conventional tests but was done correctly and rapidly by kit 16S ribosomal DNA sequencing.

SUBMITTER: Friis-Moller A

PROVIDER: S-EPMC387557 | biostudies-literature | 2004 Apr

REPOSITORIES: biostudies-literature

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Problems in identification of Francisella philomiragia associated with fatal bacteremia in a patient with chronic granulomatous disease.

Friis-Møller A A Lemming L E LE Valerius N H NH Bruun B B

Journal of clinical microbiology 20040401 4

Francisella philomiragia is a rare gram-negative, halophilic coccobacillus with bizarre spherical forms on primary isolation. A case of F. philomiragia bacteremia in a 24-year-old patient with chronic granulomatous disease is reported. Identification of F. philomiragia was problematic with conventional tests but was done correctly and rapidly by kit 16S ribosomal DNA sequencing. ...[more]

PMID: 15071065

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Francisella philomiragia bacteremia in an immunocompromised patient: a rare case report.

Project description:BackgroundFrancisella philomiragia is a very rare opportunistic pathogen of humans which causes protean diseases such as pneumonia and other systemic infections. Subsequent failure of prompt treatment may result in poor prognosis with mortality among infected patients.Case presentationThe present report describes a case of F. philomiragia bacteraemia first reported in Malaysia and Asian in a 60-year-old patient with underlying end-stage renal disease (ESRF) and diabetes mellitus. He presented with Acute Pulmonary Oedema with Non-ST-Elevation Myocardial Infarction (NSTEMI) in our hospital. He was intubated in view of persistent type I respiratory failure and persistent desaturation despite post haemodialysis. Blood investigation indicated the presence of ongoing infection and inflammation. The aerobic blood culture growth of F. philomiragia was identified using the matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry (Score value: 2.16) and confirmed by 16S Ribosomal DNA (16S rDNA) sequencing. He was discharged well on day 26 of admission, after completing one week of piperacillin/tazobactam and two weeks of doxycycline.ConclusionClinical suspicion should be raised if patients with known risk factors are presenting with pneumonia or pulmonary nodules especially as these are the most common manifestations of F. philomiragia infection. Early diagnosis via accurate laboratory identification of the organism through MALDI-TOF mass spectrometry and molecular technique such as 16S rDNA sequencing are vital for prompt treatment that results in better outcomes for the afflicted patients.

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