Washington, DC – Responding to recent warnings about risk of listeriosis in the U.S., the American College of Obstetricians and Gynecologists (the College) today released the first medical management guidelines regarding the evaluation and treatment of pregnant women exposed to the bacteria listeria. The Committee Opinion, “Management of Pregnant Women with Presumptive Exposure to Listeria Monocytogenes,” is also the first released through the College’s “publish ahead-of-print” process, in which completed guidelines are expedited in response to a public health need.