Surge in Cyclosporiasis Cases Reported Across Michigan

WHO:

[8:35 p.m. ET] - Lansing State Journal - Michigan Department of Health and Human Services (MDHHS) reported the rise in cyclosporiasis cases.

[8:35 p.m. ET] - Lansing State Journal - Local health departments and the Michigan Department of Agriculture and Rural Development (MDARD) are involved in addressing the outbreak.

WHAT:

WTOL - The Michigan Department of Health and Human Services reported that the number of cyclosporiasis cases has risen to 572, up from 170 on June 30.

Lansing State Journal - The MDHHS stated that the number of known cyclosporiasis cases has more than tripled since June 30.

[8:35 p.m. ET] - Lansing State Journal - The number of reported cyclosporiasis cases in Michigan has risen to 572, up from 170.

[8:35 p.m. ET] - Lansing State Journal - The largest increase in cases is occurring in southeast Michigan.

[8:35 p.m. ET] - Lansing State Journal - MDHHS stated that as of July 4, 2026, no specific produce grower/supplier or specific produce type has been identified as the source of the outbreak.

[8:35 p.m. ET] - WTOL - The health department is making several recommendations to reduce the spread of cyclosporiasis.

WHERE:

[8:35 p.m. ET] - Lansing State Journal - The highest number of cases has been reported in Monroe, Lenawee, Washtenaw, Wayne, Shiawassee, Jackson, Oakland, and Livingston counties in Michigan.

[8:35 p.m. ET] - WTOL - The recommendations are particularly aimed at restaurants and commercial kitchens in southeast Michigan.

WHEN:

[8:35 p.m. ET] - Lansing State Journal - The reported increase in cases is noted as occurring since Tuesday, June 30.

[8:35 p.m. ET] - Lansing State Journal - The MDHHS reported the rise in cases on July 4, 2026.

WHY:

[8:35 p.m. ET] - Lansing State Journal - Cyclosporiasis is caused by the Cyclospora parasite, which can be contracted through contaminated food or water.

[8:35 p.m. ET] - Lansing State Journal - The illness can lead to severe dehydration, particularly in vulnerable populations such as infants, young children, and the elderly.

HOW:

WTOL - The health department recommends that restaurants and commercial kitchens buy whole heads of lettuce, throw away the outer two to three layers of leaves, and wash the inner leaves under running water.

Lansing State Journal - The MDHHS advises that all food should be heated to 158°F or higher to ensure safety.

[8:35 p.m. ET] - WTOL - Recommendations include washing produce under running water, cooking leafy greens, and using frozen raspberries as an alternative to fresh ones.

[8:35 p.m. ET] - WTOL - The health department advises washing hands with soap and water before and after handling food, scrubbing firm fruits and vegetables, and sanitizing utensils and surfaces.

(UPDATED July 6, 2026 01:29 UTC)

The Michigan Department of Health and Human Services has reported a significant rise in cyclosporiasis cases, now totaling 572, which is more than triple the number from June 30. To combat this outbreak, the health department recommends that restaurants and commercial kitchens purchase whole heads of lettuce, discard the outer layers, and wash the inner leaves thoroughly under running water. Additionally, the MDHHS advises that all food should be heated to at least 158°F to ensure safety.

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(UPDATED July 5, 2026 23:23 UTC)

The Michigan Department of Health and Human Services has reported a significant rise in cyclosporiasis cases, with the total now reaching 572, a sharp increase from 170, particularly concentrated in southeast Michigan. Local health departments and the Michigan Department of Agriculture and Rural Development are actively addressing the outbreak, which has seen the highest number of cases reported in counties such as Monroe, Lenawee, and Washtenaw. To combat the spread, health officials are recommending practices like washing produce under running water, cooking leafy greens, and ensuring proper hand hygiene in restaurants and commercial kitchens.