There are now 97 people sick with salmonella in 28 Illinois counties, all related to eating at a bunch of different Subway restaurants.

A bunch of the food handlers at different Subway outlets have tested positive for salmonella, but that’s probably because they’re snacking on the same ingredients the customers get in their sandwiches.

When the outbreak was first identified, Subway pulled its lettuce, green peppers, red onions and tomatoes from restaurants and brought in new supplies. A prudent produce move.

But now the Packer reports that investigators are saying fresh produce is just a “possible” source of the salmonella outbreak.

Although federal, state and local health agencies have not named fresh vegetables as the definitive source, Melaney Arnold, an Illinois Department of Public Health spokeswoman, has said the investigation was leaning toward produce as the culprit. On June 23, Arnold characterized produce only as a possible source.