The "investigation conducted by Dole detected the presence of Listeria on a piece of equipment in their Yuma, AZ, facility. FDA conducted WGS analysis of an isolate shared by Dole, and the results confirmed that this isolate of Listeria matched the strain causing illness in this outbreak and also matched the strain of Listeria found in a positive product sample collected by the Michigan Department of Agriculture and Rural Development, as reported on December 23, 2021. Dole decommissioned and later dismantled this piece of equipment."
Additionally, as "reported on February 1, 2022, following the initial voluntary recall issued by Dole on December 22, 2021, Dole detected the presence of Listeria monocytogenes on equipment used in the harvesting of the iceberg lettuce that was also used in finished products processed in the Dole Springfield, OH, and Soledad, CA, facilities. This finding prompted a subsequent voluntary recall on January 7, 2022"
"FDA analyzed the positive samples collected by Dole from the harvesting equipment. Results from FDA’s Whole Genome Sequencing (WGS) analysis showed that the strain of Listeria found on the harvesting equipment matched the strain causing illnesses in this outbreak. Dole decommissioned the harvester and it was later dismantled. Product on hold that was included in the December 2021 recall was later tested by Dole and tested positive for the strain of Listeria monocytogenes that caused illnesses in this outbreak."
https://www.fda.gov/food/outbreaks-foodborne-illness/outbreak-investigation-listeria-monocytogenes-dole-packaged-salad-december-2021
Outbreak Investigation of Listeria monocytogenes: Dole Packaged Salad (December 2021)
FDA’s investigation is complete. CDC declares outbreak over.
Additionally, as "reported on February 1, 2022, following the initial voluntary recall issued by Dole on December 22, 2021, Dole detected the presence of Listeria monocytogenes on equipment used in the harvesting of the iceberg lettuce that was also used in finished products processed in the Dole Springfield, OH, and Soledad, CA, facilities. This finding prompted a subsequent voluntary recall on January 7, 2022"
"FDA analyzed the positive samples collected by Dole from the harvesting equipment. Results from FDA’s Whole Genome Sequencing (WGS) analysis showed that the strain of Listeria found on the harvesting equipment matched the strain causing illnesses in this outbreak. Dole decommissioned the harvester and it was later dismantled. Product on hold that was included in the December 2021 recall was later tested by Dole and tested positive for the strain of Listeria monocytogenes that caused illnesses in this outbreak."
https://www.fda.gov/food/outbreaks-foodborne-illness/outbreak-investigation-listeria-monocytogenes-dole-packaged-salad-december-2021
Outbreak Investigation of Listeria monocytogenes: Dole Packaged Salad (December 2021)
FDA’s investigation is complete. CDC declares outbreak over.