Cyclospora outbreak linked to iceberg lettuce expands to 4 more states CBS NewsCDC expands largest known U.S. cyclospora outbreak to 9 states The Washington PostF.D.A. Announces New Cyclosporiasis Outbreak With 72 Cases The New York TimesHungry for customers, Taco Bell is offering $1 lettuce-free deals CNNConfusing product recall adds to US cyclospora outbreak uncertainty The Guardian