Risk factors, clinical features, and outcomes of listeriosis in solid-organ transplant recipients: a matched case-control study.

Background: Solid-organ transplant (SOT) recipients are classically considered to be at increased risk for listeriosis. However, risk factors for this infection have not been assessed.

Methods: We carried out a multicenter, matched case-control study (1:2 ratio) from January 1995 through December 2007.