What is listeria? A microbiologist explains the bacterium behind recent deadly food poisoning outbreaks
- Written by Yvonne Sun, Assistant Professor of Microbiology, University of Dayton

Bacteria do, and will, end up in food. Everyone eats – intentionally or unintentionally – millions to billions of live microbes every day.
Most are completely harmless, but some can cause serious illnesses in humans. Because of these...