US officials declare an end to record-setting cyclospora outbreak, but its origin is still unknown

U.S. health officials have declared an end to the largest cyclospora food poisoning outbreak in the history of the United States. The Centers for Disease Control and Prevention confirmed that there is no longer a risk of people contracting cyclosporiasis from this event. Authorities are confident that all contaminated iceberg lettuce has been removed from the market. Despite the conclusion of the outbreak, the exact origin of the contamination remains unknown to the officials.