Taco Bell has announced $1 lettuce-free Enchiritos and $1 app-exclusive Nacho Fries to win back customers after being linked to the outbreak.

Americans are making fewer visits to food chains with lettuce-heavy menus as concerns mount over the cyclospora outbreak.

Taco Bell customer traffic plunged after a parasite outbreak in the US linked to shredded iceberg lettuce triggered thousands of cyclosporiasis cases in Michigan. Yum Brands…