New York City’s health department was trying to track down outbreak of food-borne illness 3 years ago at a particular restaurant. One Health Inspector took upon himself to check Yelp for reviews where people got sick.
The agency created a Yelp profile and messaged people who got sick at this restaurant to find out more info on the outbreak. After this inspectors now are using Yelp to track down outbreaks. The department uses data feeds, keywords such as “vomit,” “diarrhea,” and “food poisoning, and public reviews to track down outbreaks of food-borne illnesses.
via Business Week