Taylor Farms has expanded a voluntary recall of its iceberg lettuce products sourced from central Mexico because of a potential link to the multistate cyclospora outbreak that has sickened people across the U.S. The California-based company said products with the potential to be contaminated with the diarrhea-causing parasite were shipped to 27 states including Texas, Florida, Pennsylvania and Illinois. Cyclospora is a microscopic parasite that infects food that has come into contact with human feces, most commonly when produce is irrigated or washed with contaminated water. U.S. health officials earlier this week identified lettuce from a supplier in Mexico as a source of cyclospora contamination in food served at Taco Bell restaurants in five Midwestern states.