State health officials confirmed three more salmonella cases in the Sierra Vista area, raising the number investigated to 24.
The cause of the outbreak remains unknown.
A cluster of salmonella was first identified last week in the area when 20 confirmed cases were reported, mostly in young children and adults.
A lawsuit was filed today against Wal-Mart Stores, Inc., the company whose Greenwood, Indiana, store was the source of a Salmonella outbreak between May and August, 2006.
The lawsuit was filed by Marler Clark and Greenwood attorney John M Reames on behalf of Ryan Merritt, a Greenwood resident whose son became violently ill and was