Non-toxigenic Corynebacterium diphtheriae causing subacute bacterial endocarditis: case report.

This is the case report of a 13-yr-old European child from a boarding school at Herberton, on the Atherton Tableland, who developed subacute bacterial endocarditis, with 6 blood cultures at different times growing a non-toxigenic strain of Corynebacterium diphtheriae.