Genetics Help Spot Food Contamination

A new approach for detecting food poisoning is being used to investigate the recent outbreak of E.coli bacteria in romaine lettuce grown in the U.S. state of Arizona. The tainted produce has sickened at least 84 people in 19 states. The new method, used by the Centers for Disease Control and Prevention, relies on genetic sequencing. And as Faiza Elmasry tells us, it has the potential to revolutionize the detection of food poisoning outbreaks. VOA's Faith Lapidus narrates.