The Centers for Disease Control and Prevention (CDC) is investigating a significant outbreak of cyclosporiasis linked to shredded iceberg lettuce, which has now affected nine states.

Context

This summer, over 11,500 individuals are suspected to have contracted cyclosporiasis, marking the largest outbreak on record.S1

Key points

• The CDC is currently investigating 4,173 laboratory-confirmed cases of cyclosporiasis.S1

• The outbreak has expanded to include four additional states, according to CDC officials.S2

• Cyclosporiasis can cause severe gastrointestinal symptoms, including explosive diarrhea.S1

• The CDC's investigation is ongoing as they trace the source of the outbreak.S1

• Shredded iceberg lettuce has been identified as a potential source of the outbreak.S2

• Health officials are urging consumers to be cautious with shredded iceberg lettuce.S2

• The outbreak is notable for its scale, with over 11,500 suspected cases reported this summer.S1

• The CDC is working with state health departments to monitor and control the outbreak.S1

Why it matters

• Understanding the source of the outbreak is crucial for preventing further infections.S2

• This outbreak highlights the ongoing public health challenges associated with foodborne illnesses.S1

• The scale of the outbreak raises concerns about food safety regulations and practices.S1

What to watch

• Monitor updates from the CDC regarding the investigation's findings and recommendations.S1

• Watch for potential recalls or advisories related to shredded iceberg lettuce.S2

• Follow developments on the health impacts reported by affected individuals.S1