Cyclosporiasis Outbreak

Cyclosporiasis Outbreak (GS Paper II: Health/GS Paper III: Science & Tech)

• Context:

  • A major surge of Cyclosporiasis cases has been reported across the US (particularly in Michigan and Ohio).

  • Key Trigger: Contaminated shredded iceberg lettuce sourced from Mexico and served at specific food chains.

• About Cyclosporiasis:

  • Pathogen: Caused by the microscopic parasite Cyclospora cayetanensis.

  • Transmission: Fecal-oral route. It spreads when food or water is contaminated with infected human feces. It is not typically transmitted directly from person to person.

  • 

    • Nature of Disease: Seasonal gastrointestinal illness (peaks during summer months).

    • Symptoms: Watery, explosive diarrhea, stomach cramps, nausea, fatigue, and low-grade fever lasting from days to over a month.

    • Treatment: Managed primarily with specific antibiotics.

• Prevention & Food Safety Protocols:

  • The parasite tightly adheres to the “nooks and crannies” of leafy greens (lettuce, spinach, cilantro) and berries, making standard washing insufficient sometimes.

  • Health Recommendations: Prefer purchasing whole produce/heads of lettuce over pre-washed bagged mixes; strip outer layers, wash under running water, or cook thoroughly to kill the pathogen.