Consumers have long been warned against the hazards of eating raw cookie dough. As more cases of foodborne illness are linked to contaminated wheat flour, University of Georgia food safety experts are touting the risk in a louder, more forceful voice, while searching for ways to eliminate foodborne pathogens on wheat products.
In wheat-related cases, the common carriers of the pathogens are cookie dough, cake batter and raw wheat flour. The most recent outbreak started in May and was linked to wheat flour contaminated with E. coli 026 bacteria. Three brands of contaminated all-purpose flour were found at grocery stores in eight states, to date. So far, 21 cases of E. coli 026 infections have been reported.
In 2005, 26 cases in the U.S. were linked to cake-batter ice cream and in 2008 a cluster of cases in New Zealand were connected to an uncooked baking mixture. In all of these cases, the pathogen was Salmonella. In 2009, an E. coli O157:H7 outbreak resulted from consumption of raw cookie dough.
“In the past, the reason we warned people not to eat cookie dough was not because of the flour, but because of the raw eggs,” said Francisco Diez, director of the UGA Center for Food Safety located on the university’s campus in Griffin, Georgia. “The two main pathogens linked to wheat products are Salmonella and E. coli.”
Diez says these cases could have been prevented if the flour had not been consumed raw.