FDA, CDC Currently Investigating 3 E. Coli Outbreaks

The latest strain of E. Coli reported Nov. 6 in a sample of Tanimura & Antle romaine lettuce is not related to those found in two outbreaks announced on Oct. 28.

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The FDA and CDC, in collaboration with state and local partners, is investigating illnesses in a third multistate outbreak of E.coli O157:H7 infections this Fall.

On Nov. 6, the Michigan Department of Agriculture and Rural Development (MDARD) reported that as a part of routine sampling, they collected a product sample of romaine lettuce for testing. The sample tested positive for E. coli O157:H7 and subsequent whole genome sequencing (WGS) analysis determined that the E. coli O157:H7 present in the samples matches the strain that has caused illnesses in this outbreak.

The strain of E. coli found in the Michigan sample is a third distinct strain not genetically related to the strains causing two distinct multi-state outbreaks of Shiga-toxin producing E. coli O157:H7 (STEC) that FDA and CDC announced on Oct. 28. At this time, a specific food has not been linked to either of those outbreaks.

On Nov. 6, Tanimura & Antle, Inc. recalled packaged single head romaine lettuce with a pack date of 10/15/2020 or 10/16/2020 due to possible contamination with E. coli O157:H7. The firm recalled this product based on test results from a product sample collected and analyzed by MDARD before the WGS analysis showing the match to the outbreak strain was completed.

FDA and state partners are working with the firm to determine if additional romaine should be recalled.

At this time, there is not enough epidemiologic and traceback evidence to determine if ill people in this outbreak were exposed to romaine lettuce from Tanimura & Antle, Inc. Additional information will be provided as it becomes available.


Consumers, restaurants, and retailers, should not eat, sell, or serve Tanimura & Antle, Inc. brand packaged single head romaine lettuce with a pack date of 10/15/2020 or 10/16/2020.

Recall Information

On Nov. 6, Tanimura & Antle, Inc. recalled single head romaine lettuce under the Tanimura & Antle brand, labeled with a packed on date of 10/15/2020 or 10/16/2020, due to possible contamination with E. Coli O157:H7. Packages contain a single head of romaine lettuce with the UPC number 0-27918-20314-9.

According to Tanimura & Antle, potentially affected product was distributed to the following states: AK, OR, CA, TX, AR, OK, IN, NE, MO, TN, WI, NM, SC, WA, NC, OH, VA, MA, PR, and IL, but product could have been further distributed, reaching additional states, including MI.

Product was shipped in cases packed in either 12, 15, 18 or 24 heads per case. Retailers and distributors can identify the potentially affected products through the Produce Traceability Initiative (PTI) sticker attached to exterior of the case. The PTI codes are 571280289SRS1 and 571280290SRS1.

U.S. Distribution Map of Recalled Tanimura & Antle, Inc. Single Head Romaine Lettuce

Product Distribution*: AK, OR, CA, TX, AR, OK, IN, NE, MI, MO, TN, WI, NM, SC, WA, NC, OH, VA, MA, PR, IL*States with confirmed distribution; product could have been distributed further

Single Head Romaine Lettuce Fall2020 Cor Emap Us Distribution

Case Count Map Provided by CDC

Single Head Romaine Lettuce Fall2020 Cor Emap Cdc Case Count

Case Counts

Total Illnesses: 12
Hospitalizations: 5
Deaths: 0
Last Illness Onset Date: October 14, 2020
States with Cases: CA (2), IL (4), MI (2), OH (1), PA (2), VA (1)

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