Food Protection Trends - July/August 2020 - 270
samples collected as part of the National Antimicrobial
Resistance Monitoring System retail meat sampling
program. WGS showed that the bacteria isolated from the
clinical samples from patients and turkey products were
closely related genetically, providing further evidence that
a common product was making people sick. Although no
specific type, brand, or manufacturing source of turkey was
identified as a common factor in all illnesses, the USDAFSIS requested and two companies agreed to voluntarily
recall turkey products when presented with epidemiologic,
traceback, and laboratory evidence supporting a link between
illnesses and their brand. A common supplier of raw turkey
products connected to all illnesses was not identified,
suggesting this strain may have been present at a low level
in numerous facilities. During 2019, the USDA-FSIS and
public health partners investigated a multistate outbreak of
Salmonella Dublin illnesses linked to consumption of ground
beef. Epidemiologic, traceback, and laboratory evidence
indicated that ground beef was the source. The outbreak
strain was identified in six samples of raw beef products
from slaughter and processing establishments collected as
part of the USDA-FSIS' routine testing and in repackaged
leftover ground beef collected from a clinical patient's home.
WGS showed that Salmonella bacteria from the USDAFSIS samples and leftover ground beef sample were closely
related genetically to the Salmonella bacteria from clinical
patients. Using purchase history and receipts, the USDA-
270
Food Protection Trends July/August
FSIS determined that ground beef purchased by one patient
was produced by a USDA-FSIS-regulated establishment. The
WGS information, in conjunction with epidemiologic and
trace information, supported a link between illnesses and
the USDA-FSIS-regulated product. As a result, the company
voluntarily recalled the lot of ground beef based on the
USDA-FSIS's request.
CONCLUSIONS
WGS is a powerful tool. When combined with
epidemiologic, production, and purchase trace evidence,
WGS can be used to determine whether a USDA-FSISregulated product is causing human illness and to include
or exclude potential exposure sources. Based upon
this evidence, the USDA-FSIS can facilitate removal of
adulterated product from commerce or prevent potentially
contaminated product from reaching consumers. The USDAFSIS continues to use the best available science to investigate
outbreaks and protect public health.
REFERENCE
1. Brown, E., U. Dessai, S. McGarry, and P. Gener-Smidt. 2019. Use of
whole-genome sequencing for food safety and public health in the
United States. Foodborne Pathog. Dis. 16:441-450.
*Author for correspondence:
Telephone: +1 202.690.6645
Email: sheryl.shaw@usda.gov
Food Protection Trends - July/August 2020
Table of Contents for the Digital Edition of Food Protection Trends - July/August 2020
Consumption Data and Consumer Handling Practices of Leafy Greens in the City of São Paulo, Brazil: Useful Information for Quantitative Microbiological Consumer Phase Risk Assessments
Spatial Distribution and Characteristics of Restaurant Inspection Results in Toronto, Ontario, 2017–2018
Occupational Health and Food Safety Risks in Ilorin, Northcentral Nigeria: A Cross-sectional Survey of Slaughterhouse Workers
Manufacture of Traditionally Fermented Vegetable Products: Best Practice for Small Businesses and Retail Food Establishments
Beyond the Bio
PDG Highlight
General Interest Paper
General Interest Paper
Industry Products
Coming Events
Food Protection Trends - July/August 2020 - Cover1
Food Protection Trends - July/August 2020 - Cover2
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Food Protection Trends - July/August 2020 - Consumption Data and Consumer Handling Practices of Leafy Greens in the City of São Paulo, Brazil: Useful Information for Quantitative Microbiological Consumer Phase Risk Assessments
Food Protection Trends - July/August 2020 - 225
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Food Protection Trends - July/August 2020 - Spatial Distribution and Characteristics of Restaurant Inspection Results in Toronto, Ontario, 2017–2018
Food Protection Trends - July/August 2020 - 233
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Food Protection Trends - July/August 2020 - 237
Food Protection Trends - July/August 2020 - 238
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Food Protection Trends - July/August 2020 - 240
Food Protection Trends - July/August 2020 - Occupational Health and Food Safety Risks in Ilorin, Northcentral Nigeria: A Cross-sectional Survey of Slaughterhouse Workers
Food Protection Trends - July/August 2020 - 242
Food Protection Trends - July/August 2020 - 243
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Food Protection Trends - July/August 2020 - Manufacture of Traditionally Fermented Vegetable Products: Best Practice for Small Businesses and Retail Food Establishments
Food Protection Trends - July/August 2020 - 252
Food Protection Trends - July/August 2020 - 253
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Food Protection Trends - July/August 2020 - 263
Food Protection Trends - July/August 2020 - Beyond the Bio
Food Protection Trends - July/August 2020 - 265
Food Protection Trends - July/August 2020 - 266
Food Protection Trends - July/August 2020 - PDG Highlight
Food Protection Trends - July/August 2020 - General Interest Paper
Food Protection Trends - July/August 2020 - 269
Food Protection Trends - July/August 2020 - 270
Food Protection Trends - July/August 2020 - 271
Food Protection Trends - July/August 2020 - General Interest Paper
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Food Protection Trends - July/August 2020 - Industry Products
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Food Protection Trends - July/August 2020 - 287
Food Protection Trends - July/August 2020 - Coming Events
Food Protection Trends - July/August 2020 - Cover3
Food Protection Trends - July/August 2020 - Cover4
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