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BMJ Case Reports 2010; doi:10.1136/bcr.12.2009.2519
  • Learning from errors

Swine flu: false-positive rapid flu swab with resulting misdiagnosis of a case of Legionella pneumonia

  1. Roger J Trent
  1. Department of Medicine, Countess of Chester NHS Trust, Chester, UK
  1. Correspondence to Roger J Trent, roger.trent{at}coch.nhs.uk
  • Published 16 August 2010

Summary

A 59-year-old man presented with a severe flu-like illness and widespread pulmonary infiltrates on chest x-ray. A rapid influenza direct test was positive and the patient was nursed in isolation. On subsequent review, a diagnosis of probable atypical pneumonia was made, which was confirmed with positive urinary serology for Legionella pneumophila and treatment with appropriate antibiotics was started. A real-time PCR test for influenza A and B was negative at 72 h. The patient made a slow but full recovery and was discharged after 14 days.

Footnotes

  • Competing interests None.

  • Patient consent Obtained.

  • Published 16 August 2010
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