Pennsylvania dairy's raw milk is linked to listeriosis death
Health officials said the source of the illnesses wasn't known until January, when the U.S. Food and Drug Administration informed the CDC that whole genome sequencing of Listeria bacteria from raw chocolate milk produced by the farm in November 2015 was genetically related to samples taken from two affected individuals.
Officials say consumption of unpasteurized dairy products poses a risk for foodborne illness, and children younger than 5, the elderly, pregnant women and those with weakened immune systems are at special risk for infection-related complications.