We report a 58-year-old female presenting with fever and vomiting. The initial laboratory examination disclosed two blood cultures that were positive for Streptococcus Pyogenes. An abdominal CAT scan showed a right basal pneumonia. The patient was treated with antimicrobials and discharged with oral cefadroxil for 21 days. One month after discharge she was asymptomatic and with a normal C reactive protein. Pneumonia is an important differential diagnosis in unknown origin bacteremia caused by Streptococcus Pyogenes. It may have a fulminant evolution and may complicate with abscess and empyema.
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