Taco Bell sales in the U.S. are climbing again after a cyclospora outbreak over the summer slowed business.

Taco Bell’s same-store sales, or sales at locations open at least a year, have been outperforming the U.S. fast-food industry since the end of September, according to Yum Brands, which owns Taco Bell.

“We are really pleased with the rapid recovery,” CEO Chris Turner told investors Tuesday during a conference call.

In mid-July, federal health officials identified lettuce from Mexico and served at Taco Bell locations in five U.S. states as the source of a widespread outbreak of the diarrhea-causing parasite cyclospora. The Centers for Disease Control and Prevention warned consumers not to eat shredded iceberg lettuce from Taco Bell restaurants in Indiana, Kentucky, Michigan, Ohio and West Virginia.

Yum Brands is based in Louisville, Kentucky.

California supplier Taylor Farms recalled iceberg lettuce from central Mexico.…