A Complex Mystery: Finding the Sources of Foodborne Disease Outbreaks

I work in a group at CDC that investigates foodborne illnesses in the United States — illnesses like salmonellosis and E. coli infection. One challenge we face during an outbreak investigation is trying to figure out the source of the outbreak.

When a group of people consume the same contaminated food, an outbreak of illness can occur. This group may be people who ate a meal together or people who happened to buy and eat the same contaminated item from a grocery store or at a restaurant.