Last checked: August 20, 2026·FDA advisory as of Aug 20, 2026

What’s happening

Cyclospora outbreak

Active investigation — 17-state iceberg outbreak; seasonal cases now over 15,000[4],[1],[3],[5]

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]

10,930
Illnesses linked to this outbreak (17 states)[4],[1]
454
Hospitalizations in this outbreak[4]
2
Deaths in this outbreak (Michigan)[4]
17
States in this outbreak advisory[4]

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.

  1. Jul 16, 2026

    FDA opens public advisory[1],[4]

    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.

  2. Jul 17, 2026

    Traceback names supplier; voluntary recall begins[1],[3],[4]

    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.

  3. Jul 18, 2026

    Recall details published[1],[2]

    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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. Jul 24, 2026

    CDC expands outbreak to 9 states / 1,947 illnesses[4],[1]

    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.

  9. 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.

  10. 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.

  11. 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).

  12. Aug 5, 2026

    CDC/FDA expand outbreak to 15 states / 6,358 illnesses / 2 deaths[4],[1]

    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.

  13. 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.

  14. 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.

  15. 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.

  16. 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.

No state selected
Alabama: 1 to 49 cases reportedAlaska: 1 to 49 cases reportedArizona: 1 to 49 cases reportedColorado: 1 to 49 cases reportedFlorida: 50 to 199 cases reportedGeorgia: 50 to 199 cases reportedIndiana: 500 to 999 cases reportedKansas: 200 to 499 cases reportedMaine: 1 to 49 cases reportedMassachusetts: 50 to 199 cases reportedMinnesota: 50 to 199 cases reportedNew Jersey: 50 to 199 cases reportedNorth Carolina: 500 to 999 cases reportedNorth Dakota: 1 to 49 cases reportedOklahoma: 200 to 499 cases reportedPennsylvania: 200 to 499 cases reportedSouth Dakota: 1 to 49 cases reportedTexas: 200 to 499 cases reportedWyoming: 1 to 49 cases reportedConnecticut: 1 to 49 cases reportedMissouri: 50 to 199 cases reportedWest Virginia: 50 to 199 cases reportedIllinois: 500 to 999 cases reportedNew Mexico: No reported casesArkansas: 50 to 199 cases reportedCalifornia: 1 to 49 cases reportedDelaware: No reported casesDistrict of Columbia: 1 to 49 cases reportedHawaii: No reported casesIowa: 50 to 199 cases reportedKentucky: 200 to 499 cases reportedMaryland: 50 to 199 cases reportedMichigan: 4000 to 6999 cases reportedMississippi: 1 to 49 cases reportedMontana: 1 to 49 cases reportedNew Hampshire: 50 to 199 cases reportedNew York: 200 to 499 cases reportedOhio: 1000 to 3999 cases reportedOregon: 1 to 49 cases reportedTennessee: 50 to 199 cases reportedUtah: 1 to 49 cases reportedVirginia: 50 to 199 cases reportedWashington: 1 to 49 cases reportedWisconsin: 50 to 199 cases reportedNebraska: 200 to 499 cases reportedSouth Carolina: 1 to 49 cases reportedIdaho: 1 to 49 cases reportedNevada: 1 to 49 cases reportedVermont: 1 to 49 cases reportedLouisiana: 50 to 199 cases reportedRhode Island: 1 to 49 cases reported
Cases reported1 to 4950 to 199200 to 499500 to 9991000 to 39994000 to 6999No reported cases

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.

  1. 1
    Investigation of Multistate Outbreak of Cyclospora Illnesses: Iceberg Lettuce
    FDA · Advisory path still titled 15-state; CDC outbreak counts through Aug 20 are the primary epi source for this page
    View source
  2. 2
    Taylor Fresh Foods Recalls Iceberg Lettuce from Central Mexico
    FDA · Published Jul 18, 2026 — recall notice
    View source
  3. 3
    Taylor Fresh Foods Statement Regarding Cyclospora Outbreak
    Taylor Farms · Last company citation checked: no confirmed product positives as of Aug 5; CDC now says recalled best-by dates have passed
    View source
  4. 4
    Investigation Update: Cyclospora Outbreak, July 2026
    CDC · Updated Aug 20, 2026 — 17 states / 10,930 illnesses / 454 hospitalizations / 2 deaths (Michigan)
    View source
  5. 5
    Surveillance 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)
    View source

This page is checked against CDC, FDA, and company sources every Monday and Thursday while the investigation is active.

This page summarizes public FDA, CDC, and company information to help our community stay informed. It is not medical advice — if you have symptoms, contact your healthcare provider.