CHAMPAIGN, Ill. — As they scrambled recently to trace the source of a salmonella outbreak that has sickened hundreds around the country, investigators from the Centers for Disease Control and Prevention successfully used a new tool for the first time — the shopper cards that millions of Americans swipe every time they buy groceries.
With permission from the patients, investigators followed the trail of grocery purchases to a Rhode Island company that makes salami, then zeroed in on the pepper used to season the meat.
Never before had the CDC successfully mined the mountain of data that supermarket chains compile.
“It was really exciting. It was a break in the investigation for sure,” said CDC epidemiologist Casey Barton Behravesh.
At least 245 people in 44 states have been sickened in the outbreak. That includes three in Colorado, 30 in California, 19 in Illinois, 18 in New York and 17 in Washington state.
The victims included Raymond Cirimele, a 55-year-old Chicago man. He said no one asked for his shopper-card data but that he would have provided it if someone had.
“I don’t have any secrets, so I’m not worried about it,” he said. “It’s kind of like the whole airport security and all that. I’d rather fly on a safe plane.”
