Listeria Food Poisoning. Listeria is a bacterium that causes a serious infection called listeriosis. Around 300 deaths are caused by Listeria infection each year, according to estimates from a 2011 CDC report.Listeria bacteria are most commonly found in raw foods.oxoplasma Food Poisoning. Toxoplasma gondii is one of the world’s most common parasites. It is the second leading cause of deaths attributed to foodborne illness in the United States, and the third leading cause of foodborne illness hospitalizations.