DiscoverIDBR Infectious Disease Board ReviewWhere Did This Strange Mycobacteria Come From? - Barbara D. Alexander, MD / Kevin Winthrop, MD
Where Did This Strange Mycobacteria Come From? - Barbara D. Alexander, MD / Kevin Winthrop, MD

Where Did This Strange Mycobacteria Come From? - Barbara D. Alexander, MD / Kevin Winthrop, MD

Update: 2024-06-24
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Description

A 62-year-old male was seen for low grade fever and weight loss over the past month.


He had undergone aortic valve replacement in 2015 with a bioprosthesis. Transesophageal


echocardiography found no evidence of endocarditis and routine blood cultures were negative.


Mycobacterial blood cultures grew Mycobacterium chimaera.


The patient lived in a rural area, drank well water and had a pond in this back yard with Koi fish.


The most likely source of this Mycobacterial infection is which of the following:


A. Operating room air


B. Bioprosthetic valve


C. Well water


D. Fish pond


E. Intestinal lesion




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Where Did This Strange Mycobacteria Come From? - Barbara D. Alexander, MD / Kevin Winthrop, MD

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