Cyclospora Outbreak Spreads Nationwide, Nearly 7,000 Cases Reported

WHO:

CNN - Dr. Gwen Biggerstaff, deputy director of CDC’s Division of Foodborne, Waterborne, and Environmental Diseases.

NBC News - US Centers for Disease Control and Prevention (CDC).

WHAT:

NBC News - Around an estimated 7,000 cases of cyclosporiasis have spread across the U.S., with a little over 3,300 cases reported from Michigan.

NBC News - The Michigan state health department has reported more than 3,300 cases of cyclospora during the outbreak investigation.

NBC News - An additional investigation notice published by the CDC notes that at least 400 cases across at least four states—Michigan, Ohio, West Virginia, and Kentucky—“appear to be epidemiologically linked, suggesting that there could be a common source of these infections.”

WTNH - The Connecticut Department of Public Health confirmed 40 cases of cyclosporiasis in the state.

NBC News - As of the latest report, around an estimated 7,000 cases of cyclosporiasis have spread across the U.S., with a little over 3,300 cases reported from Michigan.

CNN - The CDC has issued a health alert regarding the outbreak, indicating that the number of confirmed cases is significantly higher than previous years.

CNN - The CDC reported that the total number of cases this year is 27 times higher than last year’s total at this time.

CNN - The Michigan state health department has reported more than 3,300 cases of cyclospora during the outbreak investigation.

CNN - The CDC reported that the number of confirmed cases of cyclosporiasis since May 1 is already more than six times higher than the same time last year.

CNN - Dr. Gwen Biggerstaff described the current outbreak as “a very big shift” from previous seasons.

NBC News - The CDC stated that nearly 7,000 people nationwide may have cyclosporiasis, with 1 in every 11 cases resulting in hospitalization.

NBC News - Nearly 7,000 people nationwide may have cyclosporiasis, a foodborne illness that can cause weeks of severe diarrhea.

CNN - An additional investigation notice published by the CDC notes that at least 400 cases across at least four states—Michigan, Ohio, West Virginia, and Kentucky—“appear to be epidemiologically linked, suggesting that there could be a common source of these infections.”

CNN - There have been 1,645 confirmed cases of cyclosporiasis acquired in the United States since May 1.

CNN - More than 5,100 additional cases are being investigated by the CDC.

NBC News - Nearly 7,000 people nationwide may have cyclosporiasis.

CNN - About 1 in every 11 cases has resulted in hospitalization.

CNN - No deaths have been reported.

CNN - Michigan has reported more than 3,300 cases of cyclospora during the outbreak investigation.

CNN - The largest cyclospora outbreak in the US on record led to about 1,500 cases and involved raspberries.

WHERE:

NBC News - Cases have been identified in 34 states.

CNN - Cases have been identified in 34 states.

CNN - The outbreak is linked to Michigan, Ohio, West Virginia, and Kentucky.

CNN - The Michigan state health department is investigating the outbreak.

WHEN:

CNN - The confirmed cases since May 1 are already more than six times higher than the same time last year.

CNN - The total number of cases this year is 27 times higher than last year’s total at this time.

WHY:

Alternet - Experts suggest that policy changes implemented by the Trump Administration may have contributed to the outbreak, as cyclospora was removed from a mandatory reporting list last summer.

CNN - Cyclospora activity tends to increase during the spring and summer.

CNN - Current results suggest lettuce or salad greens may be a potential source for the outbreak, but nothing has been ruled out.

HOW:

Alternet - Under the Trump administration, the tracking of cyclosporiasis was made optional in 2025, which has been suggested to have contributed to the outbreak's severity.

Alternet - Required monitoring was cut down from eight pathogens to just two, with the other six pathogens, including cyclospora, made optional.

CNN - The CDC has issued a health alert regarding the outbreak and is investigating the cases.

(UPDATED July 15, 2026 19:19 UTC)

Around an estimated 7,000 cases of cyclosporiasis have spread across the U.S., with more than 3,300 of those cases reported in Michigan alone. The CDC has noted that at least 400 cases across Michigan, Ohio, West Virginia, and Kentucky appear to be linked, indicating a possible common source for these infections. Additionally, it's been suggested that the outbreak's severity may be related to the decision made under the Trump administration in 2025 to make tracking of cyclosporiasis optional.

(UPDATED July 15, 2026 18:20 UTC)

The Connecticut Department of Public Health has confirmed 40 cases of cyclosporiasis in the state. This outbreak has raised concerns among health officials as they work to identify the source of the infections. Residents are being urged to take precautions and stay informed about the situation.

(UPDATED July 15, 2026 13:27 UTC)

Around 7,000 cases of cyclosporiasis have been reported across the U.S., with over 3,300 of those cases coming from Michigan, according to NBC News. The CDC has issued a health alert about this outbreak, noting that the number of confirmed cases is significantly higher than in previous years. It has been suggested that the decision to make tracking cyclosporiasis optional in 2025 under Trump may have contributed to the severity of the current outbreak.

(UPDATED July 15, 2026 10:31 UTC)

The CDC has reported that the total number of cyclospora cases this year is 27 times higher than the total at this time last year, with Michigan's state health department noting over 3,300 cases during the ongoing outbreak investigation. Experts suggest that policy changes made during the Trump administration may have played a role in this surge, as cyclospora was removed from a mandatory reporting list last summer. Additionally, required monitoring was reduced from eight pathogens to just two, making the other six, including cyclospora, optional.

(UPDATED July 15, 2026 01:22 UTC)

The CDC has reported a significant increase in confirmed cases of cyclosporiasis, with numbers since May 1 already exceeding six times those from the same period last year, and nearly 7,000 people nationwide may be affected, leading to hospitalizations in one out of every eleven cases. Dr. Gwen Biggerstaff has characterized this outbreak as “a very big shift” from previous seasons, highlighting the severity of the situation. Experts suggest that policy changes made during the Trump Administration, which removed cyclospora from a mandatory reporting list and reduced required monitoring from eight pathogens to just two, may have played a role in this alarming rise.

(UPDATED July 14, 2026 21:19 UTC)

Nearly 7,000 people across the country may be affected by cyclosporiasis, a foodborne illness that can lead to weeks of severe diarrhea. The CDC has noted that at least 400 cases in Michigan, Ohio, West Virginia, and Kentucky appear to be linked, indicating a possible common source of these infections. Experts suggest that changes made during the Trump Administration, which removed cyclospora from a mandatory reporting list and reduced required monitoring from eight pathogens to just two, may have contributed to this outbreak.

(UPDATED July 14, 2026 19:27 UTC)

The CDC has reported 1,645 confirmed cases of cyclosporiasis in the United States since May 1, with an additional 5,100 cases under investigation, indicating that nearly 7,000 people nationwide may be affected. The outbreak, primarily linked to Michigan, Ohio, West Virginia, and Kentucky, has seen more than 3,300 cases reported in Michigan alone, and about one in eleven cases has resulted in hospitalization, although no deaths have been reported. The CDC is investigating the outbreak and has issued a health alert, with preliminary findings suggesting that lettuce or salad greens may be a potential source, but other sources have not been ruled out.