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Learning from errors
Swine flu: false-positive rapid flu swab with resulting misdiagnosis of a case of Legionella pneumonia
  1. Robert Schofield,
  2. 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

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.

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  • Competing interests None.

  • Patient consent Obtained.

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