Wendy's Pulls Lettuce From Sandwiches Amid E. Coli Outbreak

The CDC is investigating a potential E coli outbreak in Michigan, Ohio, Pennsylvania, and Indiana, linked to restaurants. So far, 37 people have been infected, with 10 hospitalized. The source is not confirmed, but many affected individuals reported eating sandwiches with romaine lettuce. Wendy's is cooperating with the investigation.

What states are being investigated for the possible E. coli outbreak?

How many people have been infected in the states mentioned?

What has the CDC not confirmed regarding the outbreak?

What specific food item did many sick people report eating?

What is Wendy's response to the investigation?