The Centers for Disease Control and Prevention has expanded the nation’s largest known Cyclospora outbreak to include nine extra states. Illinois, Kansas, Oklahoma and Pennsylvania join Indiana, Kentucky, Michigan, Ohio and West Virginia in an ongoing investigation involving contaminated shredded iceberg lettuce. Health officials have confirmed 1,947 illnesses tied to people who reported eating at Taco Bell, with at least 98 people hospitalized. Federal investigators have traced the lettuce to Taylor Farms, which voluntarily recalled shredded iceberg lettuce sourced and processed in central Mexico. Officials stressed that not every cyclospora infection reported this year is tied to the Taco Bell outbreak.