Human Contamination Linked to Rising Cyclospora Cases Nationwide

WHO:

CNN - Dr. Mark Moorman, retired director of the Office of Food Safety at the US Food and Drug Administration.

CNN - Dr. Keith Schneider, professor of food safety at the University of Florida.

CNN - Dr. Kali Kniel, professor of microbial food safety at the University of Delaware.

TribLIVE.com - Dr. Jillian Irwin, Allegheny County Health Department’s medical director and deputy director for clinical services.

TribLIVE.com - Stephanie Nojiri, spokeswoman for the Pennsylvania Department of Health.

TribLIVE.com - Dr. Iulia Vann, Allegheny County Health Department Director.

TribLIVE.com - Ronnie Das, spokesman for the Allegheny County Health Department.

WHAT:

CNN - The CDC reported that the current outbreak has swelled to more than 11,500 confirmed and suspected cases across 41 states, with the majority acquired domestically rather than through international travel.

KTVZ - The FDA is investigating another cluster of 72 related cases that does not yet have a known source.

TribLIVE.com - As of July 20, Pennsylvania had recorded 45 cyclosporiasis cases, five more than the entirety of 2025 and nearly half of the total 87 cases reported in 2024.

The Guardian - The FDA identified lettuce from Taylor Farms as being linked to the outbreak, but later backtracked, with Taylor Farms claiming the FDA apologized, a claim the FDA denied.

CNN - The CDC reported that the current outbreak has swelled to more than 12,000 cases of cyclosporiasis across nine states, with the majority of cases in Michigan.

The Guardian - Frank Yiannas, former deputy commissioner for food policy at the FDA, stated that the chaotic response to the outbreak has been compounded by a “lack of strong federal leadership” and mixed messages from federal agencies.

KTVZ - The Oregon Health Authority expects additional cases linked to the federal outbreak, particularly among individuals who have recently traveled to affected areas or as more products may be identified.

TribLIVE.com - As of July 20, there were 45 reported cases in Pennsylvania, five more than the entirety of 2025.

TribLIVE.com - The CDC reported over 4,100 laboratory-confirmed cases and more than 7,400 additional cases requiring further investigation.

WGAL - The CDC reported that the combined total of more than 12,000 cases of cyclosporiasis is now linked to nine states, with the majority of cases in Michigan.

KTVZ - The Oregon Health Authority stated that the risk to the public remains low, and that cyclospora is not spread directly from person to person.

KTVZ - The recalled iceberg lettuce products were subject to a voluntary recall on July 17, but were not reported to have been distributed in Oregon.

CNN - The CDC reported that this year, more than 11,500 confirmed and suspected cases of cyclospora have been identified, with the majority acquired domestically rather than through international travel.

The Guardian - Frank Yiannas, former deputy commissioner for food policy at the FDA, stated that the mismanagement of the cyclospora outbreak is approaching a "catastrophic level" and called for an independent review of the federal government's response.

KTVZ - The Oregon Health Authority anticipates additional cases linked to the federal outbreak, particularly among individuals who have recently traveled to affected areas or as more products may be identified.

KTVZ - The Oregon Health Authority is investigating two residents who developed Cyclospora infections linked to an ongoing multistate outbreak and a nationwide recall of pre-shredded iceberg lettuce products.

KTVZ - As of 2026, 23 cyclosporiasis cases have been reported in Oregon, consistent with recent years' numbers, including 26 cases in 2025, 30 cases in 2024, 10 cases in 2023, eight cases in 2022, and 14 cases in 2021.

CNN - More than 11,500 confirmed and suspected cases of cyclospora across 41 states, according to the CDC.

CNN - Typically, the US sees 2,000 to 4,000 cases of cyclospora each year.

TribLIVE.com - Allegheny County has confirmed 31 cases of cyclospora, including one hospitalization.

TribLIVE.com - The CDC reported over 4,100 laboratory-confirmed cases and more than 7,400 additional cases requiring further investigation.

TribLIVE.com - 308 hospitalizations and zero deaths reported from cyclospora cases.

WHERE:

CNN - The largest outbreak is in the Midwest, linked to iceberg lettuce grown in Mexico.

TribLIVE.com - Allegheny County, Pennsylvania.

TribLIVE.com - The CDC expanded the outbreak to include Illinois, Kansas, Oklahoma, and Pennsylvania.

WHEN:

TribLIVE.com - As of July 20, there were 45 reported cases in Pennsylvania, five more than the entirety of 2025.

TribLIVE.com - The Board of Health meeting occurred on July 15.

TribLIVE.com - The alert regarding iceberg lettuce from Taylor Farms was issued on July 17.

WHY:

The Guardian - Frank Yiannas stated that the chaotic response to the outbreak has been compounded by a “lack of strong federal leadership” and mixed messages from federal agencies.

The Guardian - Yiannas highlighted a "lack of strong federal leadership" and mixed messages from federal agencies as contributing factors to the public confusion surrounding cyclosporiasis.

KTVZ - The Oregon Health Authority expects additional cases linked to the federal outbreak among people who recently traveled to affected areas or as additional products may be identified as part of the nationwide outbreak.

CNN - Cyclospora is only found in human feces, indicating that human contamination is the source of outbreaks.

TribLIVE.com - Cyclospora infections are often linked to fresh produce imported from tropical and subtropical regions.

HOW:

KTVZ - The Oregon Health Authority is investigating two residents who developed Cyclospora infections linked to the ongoing multistate outbreak and a nationwide recall of pre-shredded iceberg lettuce products.

CNN - The FDA is currently investigating six outbreaks of cyclospora, with the largest being a nine-state outbreak believed to be linked to iceberg lettuce grown in Mexico.

CNN - Investigations into outbreaks involve tracing food back to suppliers and conducting environmental assessments on farms.

TribLIVE.com - Positive specimens are sent to the Pennsylvania Bureau of Laboratories for genetic testing to identify common sources.

(UPDATED July 26, 2026 14:22 UTC)

The CDC has reported that the current outbreak has grown to over 11,500 confirmed and suspected cases across 41 states, with most infections acquired domestically. Meanwhile, the FDA is investigating a new cluster of 72 related cases that still lacks a known source, and they previously identified lettuce from Taylor Farms as linked to the outbreak, although they later retracted that statement. In Oregon, health officials are looking into two residents who developed Cyclospora infections tied to the ongoing multistate outbreak and a nationwide recall of pre-shredded iceberg lettuce products.

(UPDATED July 26, 2026 02:47 UTC)

The CDC has reported that the current outbreak of cyclosporiasis has surged to more than 12,000 cases across nine states, with Michigan seeing the majority of those infections. Frank Yiannas, the former deputy commissioner for food policy at the FDA, pointed to a chaotic response and a lack of strong federal leadership as factors contributing to public confusion about the outbreak. Meanwhile, the FDA is investigating six outbreaks of cyclospora, with the largest one believed to be linked to iceberg lettuce grown in Mexico.

(UPDATED July 25, 2026 22:12 UTC)

The CDC has reported that over 12,000 cases of cyclosporiasis are now linked to nine states, with the highest number of cases found in Michigan. The Oregon Health Authority reassured the public that the risk remains low, emphasizing that cyclospora is not transmitted directly from person to person, and noted that recalled iceberg lettuce products were voluntarily recalled on July 17 but were not distributed in Oregon. Meanwhile, the FDA is investigating six outbreaks of cyclospora, with the largest one connected to iceberg lettuce grown in Mexico, as concerns grow over the chaotic response to the outbreak and the mixed messages from federal agencies.

(UPDATED July 25, 2026 19:19 UTC)

The CDC has reported over 11,500 confirmed and suspected cases of cyclospora this year, with most infections occurring domestically rather than through international travel. Frank Yiannas, the former deputy commissioner for food policy at the FDA, has criticized the federal government's response to the outbreak, stating it is nearing a "catastrophic level" and calling for an independent review. Meanwhile, the Oregon Health Authority is expecting more cases linked to the outbreak, especially among those who have recently traveled to affected areas or as more products are identified.

(UPDATED July 25, 2026 18:11 UTC)

The Oregon Health Authority is currently investigating two residents who have developed Cyclospora infections tied to an ongoing multistate outbreak and a nationwide recall of pre-shredded iceberg lettuce products. So far in 2026, Oregon has reported 23 cases of cyclosporiasis, which aligns with the numbers from recent years, including 26 cases in 2025 and 30 cases in 2024. Authorities anticipate that more cases may emerge as individuals who recently traveled to affected areas could be impacted, and as additional products linked to the outbreak are identified.

(UPDATED July 25, 2026 17:18 UTC)

Health officials are sounding the alarm as the CDC reports over 11,500 confirmed and suspected cases of cyclospora across 41 states, with the largest outbreak linked to iceberg lettuce grown in Mexico. In Allegheny County, Pennsylvania, there have been 31 confirmed cases, including one hospitalization, and the CDC has expanded its investigation to include states like Illinois, Kansas, and Oklahoma. Cyclospora is known to originate from human feces, and officials are tracing food back to suppliers while conducting environmental assessments to identify the source of this troubling outbreak.