Date: Mar 17, 2022
Category:

On March 16, 2022, the U.S. Food and Drug Administration (FDA) released findings from a sampling assignment that collected and tested processed avocado and guacamole from November 2017 to September 2019. The assignment sought to estimate the prevalence of Salmonella spp. and Listeria monocytogenes in processed avocado and guacamole as part of the FDA’s ongoing effort to proactively ensure food safety and prevent contaminated food from reaching consumers.

During the assignment the FDA collected and tested a total of 887 samples of both domestic and imported processed avocado and guacamole. The agency detected Salmonella spp. in two samples, which were later determined to be distinct samples of the same brand of domestically manufactured guacamole. Neither of these samples had received high pressure processing (HPP) treatment. HPP is a kill step increasingly used by this industry to neutralize harmful pathogens.

The FDA detected Listeria monocytogenes in 15 samples. Of those 15 samples, eight had not received HPP treatment; the agency could not determine whether the other seven samples had received HPP treatment. Following whole genome sequencing conducted on the pathogens detected, the agency determined in the case of each positive that either there was no linkage to any clinical illnesses or that the available epidemiological information was inconclusive with respect to the food or other vehicle involved in the illnesses.

The assignment data show that the estimated prevalence of these pathogens in the non-HPP-treated samples was higher than in the HPP-treated samples. These findings appear to align with research that indicates HPP is an effective kill step. The findings of this assignment also underscore the need for processors of processed avocado and guacamole and others in the supply chain to comply with the agency’s Current Good Manufacturing Practice, Hazard Analysis, and Risk-Based Preventive Controls for Human Food rule, as applicable.

The FDA will continue to sample processed avocado and guacamole for pathogens as warranted to protect consumers.

FDA Constituent Update

WG Staff Contact

Sonia Salas
Assistant Vice President, Science
949-885-2251

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