Last checked: August 20, 2026·FDA advisory as of Aug 20, 2026
What’s happening
Cyclospora outbreak
CDC and FDA are investigating a multistate Cyclospora outbreak linked to iceberg lettuce from Taylor Farms de Mexico. As of August 20, that advisory includes 10,930 lab-confirmed illnesses in 17 states, with at least 454 hospitalizations and 2 deaths in Michigan. Recalled product best-by dates have passed; the investigation remains open.[4],[1],[3],[5]
Cards above = iceberg outbreak advisory (10,930 illnesses / 454 hospitalizations / 2 deaths in Michigan / 17 states). Map below = broader seasonal surveillance (15,716 confirmed / 828 hospitalizations / 2 deaths / 47 states + D.C. & Puerto Rico). The outbreak is a subset of the seasonal total — do not add the two together.[1],[5]
Local Impact
Does this affect San Diego?
San Diego & California
- California is not among the 17 states named in the CDC/FDA outbreak advisory (AR, IA, IL, IN, KS, KY, MA, ME, MI, MO, NC, NE, NH, OH, OK, PA, WV).[4]
- Cardiff Tiny Farm is not exposed to this outbreak; our produce comes from local San Diego partner farms, not the food-service supply chain under investigation.
- CDC notes that best-by dates for recalled Taylor Farms de Mexico iceberg have passed and the product should no longer be in stores or restaurants. Officials still say the outbreak may not be limited to states with known illnesses, and CDC continues to investigate other national cyclosporiasis clusters unrelated to this outbreak.[4],[1]
How the facts developed
Investigation timeline
Scroll to watch the investigation unfold. Dated updates from the FDA advisory and Taylor Farms newsroom appear in order; citations jump to the primary documents below.
FDA and CDC announce a multistate investigation of Cyclospora illnesses linked to shredded iceberg lettuce at Taco Bell locations in Indiana, Kentucky, Michigan, Ohio, and West Virginia. Early epidemiology: 1,644 illnesses with Taco Bell exposure, 94 hospitalizations, 0 deaths. Traceback converging on a single Mexico iceberg supplier; product sampling begun; Taco Bell commits to stop using lettuce from the identified supplier.
FDA states traceback identified convergence on Taylor Farms de Mexico. Taylor Farms de Mexico announces voluntary removal of all iceberg lettuce sourced from central Mexico from the U.S. market and informs FDA it will initiate a recall. Product was distributed to food service and retail (including Marketside at Walmart) in at least 27 states. Taylor Farms also states no Taylor Farms branded salad kits contain iceberg lettuce / are associated with the outbreak.
FDA posts that Taylor Farms de Mexico is removing central Mexico iceberg lettuce, including Marketside-brand iceberg salad and shredded lettuce sold at Walmart, with a link to the company's full food-service product list and lot codes.
Jul 19, 2026
FDA: product-sample positive was a false positive[1]
FDA re-reviews the Jul 18 Taylor Farms de Mexico lettuce sample and concludes it does not represent true amplification — a false positive. Information about that sample is removed from the Jul 18 update. FDA says that as of Jul 19 there are no confirmed positive product-test results for Cyclospora, notifies Taylor Farms, and continues working with the firm on market removal while sampling continues.
Jul 19, 2026
Taylor Farms responds to the lab correction[3]
Taylor Fresh Foods states FDA informed them of a positive sample the day before, then that it was a mistake / false positive, and that at that moment FDA had not identified a single positive product test for Cyclospora. The company says the voluntary recall of central Mexico iceberg lettuce was completed in an abundance of caution and that other Taylor Farms brand products are not involved.
Jul 20, 2026
Taylor Farms publishes a facts summary[3]
Taylor Farms summarizes: Jul 17 voluntary recall of central Mexico iceberg lettuce; recall completed with product removed; no Taylor Farms branded products in the recall; no longer sourcing central Mexico iceberg for the rest of the growing season; experts on site in central Mexico investigating potential contamination sources; continuing to work with health officials.
Jul 23, 2026
Taylor Farms reiterates suspended sourcing[3]
Taylor Farms updates that it immediately removed potentially implicated product, issued a broader recall of central Mexico iceberg, and voluntarily suspended all iceberg lettuce sourcing and production from central Mexico. Independent experts are reviewing food-safety protocols at the central Mexico facility.
CDC reports the multistate outbreak linked to iceberg lettuce now includes Illinois, Kansas, Oklahoma, and Pennsylvania (9 states total). Linked case count rises to 1,947 people with Cyclospora who reported Taco Bell exposure; at least 98 hospitalizations; 0 deaths. Illnesses linked to this outbreak began June 22 and continued through July 20. CDC says epidemiologic and traceback data continue to show Taylor Farms de Mexico iceberg lettuce was contaminated. FDA's public advisory is reframed as a 9-state investigation.
Jul 24, 2026
Taylor Farms: still no confirmed product positives[3]
Taylor Farms publishes another update: production of all products at the central Mexico facility temporarily suspended as of July 18; independent experts reviewing food-safety protocols; company cites FDA that there are no confirmed positive product-test results for Cyclospora as of July 24.
Jul 28, 2026
CDC seasonal surveillance jumps to 6,707 confirmed[5]
CDC updates nationwide seasonal surveillance for domestically acquired, lab-confirmed cyclosporiasis (May 1–July 27): 6,707 cases in 45 states, 423 hospitalizations, 0 deaths. CDC is also aware of more than 11,500 additional reported cases that are not yet laboratory confirmed (many from Michigan and Ohio). These seasonal totals include — but are much larger than — the separate 9-state iceberg/Taco Bell outbreak advisory.
Aug 4, 2026
CDC seasonal surveillance tops 10,000 confirmed[5]
CDC updates nationwide seasonal surveillance for domestically acquired, lab-confirmed cyclosporiasis (May 1–August 3): 10,468 cases in 47 states, 517 hospitalizations, 2 deaths. CDC is also aware of more than 12,255 additional reported cases that are not yet laboratory confirmed (many from Michigan). Michigan moves into the map's highest bin (>4,000).
CDC and FDA update the multistate iceberg lettuce investigation: 6,358 lab-confirmed illnesses in 15 states (adding Arkansas, Iowa, Missouri, Nebraska, New Hampshire, and North Carolina). Inclusion now covers people who reported exposure to Taco Bell or recalled Taylor Farms de Mexico iceberg lettuce. At least 278 hospitalizations; 2 deaths reported in Michigan (both with significant underlying health conditions; onset before the Jul 17 recall). Illness onset dates for this outbreak continue through July 31. FDA lists recalled U.S. product distribution in 29 states and notes the recall also reached consumers in Mexico.
Aug 5, 2026
Taylor Farms: still no confirmed product positives[3]
Taylor Farms' public statement continues to cite FDA that there are no confirmed positive product-test results for Cyclospora as of August 5, 2026 — updating the company's earlier July 24 citation — while the voluntary recall, suspended central Mexico iceberg sourcing, and facility production pause remain in place.
Aug 13, 2026
CDC expands outbreak to 17 states / 9,481 illnesses[4]
CDC adds Maine and Massachusetts to the multistate iceberg lettuce outbreak (17 states total). Linked case count rises to 9,481 illnesses; at least 398 hospitalizations; 2 deaths in Michigan. Illness onset dates expand to June 14 through August 3. Inclusion covers people who reported exposure to processed iceberg lettuce from Taylor Farms de Mexico served or purchased at various locations, including people who previously reported eating at Taco Bell. CDC notes that best-by dates for recalled products have passed.
Aug 18, 2026
CDC seasonal surveillance tops 15,000 confirmed[5]
CDC updates nationwide seasonal surveillance for domestically acquired, lab-confirmed cyclosporiasis (May 1–August 17): 15,716 cases in 47 states plus D.C. and Puerto Rico, 828 hospitalizations, 2 deaths. CDC is also aware of at least 11,841 additional reported cases that are not yet laboratory confirmed. Map bins refresh (Ohio moves into 1,000–3,999; Michigan into 4,000–6,999); Illinois, Maryland, Minnesota, Nebraska, New Hampshire, Pennsylvania, and Texas also step up a bin.
Aug 20, 2026
CDC raises outbreak count to 10,930 illnesses / 454 hospitalizations[4]
CDC's latest multistate iceberg lettuce update: 10,930 lab-confirmed illnesses in 17 states; at least 454 hospitalizations; 2 deaths in Michigan. Illness onset dates continue through August 11. CDC reiterates that recalled product best-by dates have passed and genotype testing shows parasites from sick people in this outbreak are genetically related.
Seasonal surveillance
Cases by state this season[5]
Where the 15,716 people with domestically acquired, lab-confirmed cyclosporiasis lived, across 47 states plus D.C. and Puerto Rico (CDC, as of Aug 17, 2026).[5]
Lab-confirmed domestically acquired cases only. This seasonal total is larger than — and separate from — the CDC/FDA 10,930-illness iceberg outbreak advisory above. Do not combine the two.[5],[1]
Hover or tap a state to see its reported case range.
Where people with domestically acquired, lab-confirmed cyclosporiasis lived this season (May 1–August 17, 2026). This is CDC's broader seasonal surveillance total — it includes the iceberg-lettuce outbreak plus other cases not yet linked to a common source. As of August 18, CDC is also aware of at least 11,841 additional reported cases that are not yet laboratory confirmed; those are not included in this confirmed total. CDC reports cases from 47 states plus the District of Columbia and Puerto Rico. Source: CDC surveillance, as of Aug 17, 2026. Ranges are the CDC’s binned counts, not exact totals; true case numbers are likely higher because some people recover without being tested.
Source: [5] CDC surveillance · View on CDC.gov
Verify it yourself
Primary documents
Superscript numbers on the page link here. Prefer the CDC investigation update for the iceberg outbreak counts (Aug 20), CDC surveillance for the nationwide seasonal total and map CSV (May 1–Aug 17, page updated Aug 18), the FDA advisory for lab-correction and distribution details, and Taylor Farms newsroom for company recall actions.
- 1View sourceInvestigation of Multistate Outbreak of Cyclospora Illnesses: Iceberg LettuceFDA · Advisory path still titled 15-state; CDC outbreak counts through Aug 20 are the primary epi source for this page
- 2View sourceTaylor Fresh Foods Recalls Iceberg Lettuce from Central MexicoFDA · Published Jul 18, 2026 — recall notice
- 3View sourceTaylor Fresh Foods Statement Regarding Cyclospora OutbreakTaylor Farms · Last company citation checked: no confirmed product positives as of Aug 5; CDC now says recalled best-by dates have passed
- 4View sourceInvestigation Update: Cyclospora Outbreak, July 2026CDC · Updated Aug 20, 2026 — 17 states / 10,930 illnesses / 454 hospitalizations / 2 deaths (Michigan)
- 5View sourceSurveillance of Cyclosporiasis (2026 season total — a different, broader dataset)CDC · Updated Aug 18, 2026 · confirmed domestic cases May 1–Aug 17: 15,716 in 47 states + D.C. & Puerto Rico / 828 hospitalizations / 2 deaths (plus ≥11,841 not yet lab-confirmed)