In the news

ruth

Foodborne illness estimates for 2020 for Salmonella, Escherichia coli O157, and Listeria monocytogenes using multi-year outbreak surveillance data

The CDC reported that each year in the United States, an estimated 9 million people get sick, 56,000 are hospitalized, and 1,300 die of foodborne diseases caused by known pathogens. The Interagency Food Safety Analytics Collaboration (IFSAC) is a tri-agency group created by the CDC, FDA, and USDA-FSIS. Salmonella illnesses come from a wide variety of foods. More than 75% of Salmonella illnesses were attributed to seven food categories: Chicken, Fruits, Pork, Seeded Vegetables (such as tomatoes), Other Produce (such as fungi, herbs, nuts, and root vegetables), Beef, and Turkey. E. coli O157 illnesses were most often linked to Vegetable Row Crops (such as leafy greens) and Beef. More than 80% of illnesses were linked to these two categories. Listeria monocytogenes illnesses were most often linked to Dairy products, Fruits, and Vegetable Row Crops. More than 75% of illnesses were attributed to these three categories, but the rarity of Listeria monocytogenes outbreaks makes these estimates less reliable than those for other pathogens. @ https://www.cdc.gov/foodsafety/ifsac/pdf/P19-2020-report-TriAgency-508.pdf?ACSTrackingID=USCDC_485-DM93178&ACSTrackingLabel=Food%20Safety%20Updates%20From%20CDC&deliveryName=USCDC_485-DM93178

 

Foodborne illness estimates for 2020 for Salmonella, Escherichia coli O157, and Listeria monocytogenes using multi-year outbreak surveillance data

The CDC reported that each year in the United States, an estimated 9 million people get sick, 56,000 are hospitalized, and 1,300 die of foodborne diseases caused by known pathogens. The Interagency Food Safety Analytics Collaboration (IFSAC) is a tri-agency group created by the CDC, FDA, and USDA-FSIS. Salmonella illnesses come from a wide variety of foods. More than 75% of Salmonella illnesses were attributed to seven food categories: Chicken, Fruits, Pork, Seeded Vegetables (such as tomatoes), Other Produce (such as fungi, herbs, nuts, and root vegetables), Beef, and Turkey. E. coli O157 illnesses were most often linked to Vegetable Row Crops (such as leafy greens) and Beef. More than 80% of illnesses were linked to these two categories. Listeria monocytogenes illnesses were most often linked to Dairy products, Fruits, and Vegetable Row Crops. More than 75% of illnesses were attributed to these three categories, but the rarity of Listeria monocytogenes outbreaks makes these estimates less reliable than those for other pathogens. @ https://www.cdc.gov/foodsafety/ifsac/pdf/P19-2020-report-TriAgency-508.pdf?ACSTrackingID=USCDC_485-DM93178&ACSTrackingLabel=Food%20Safety%20Updates%20From%20CDC&deliveryName=USCDC_485-DM93178

 

ruth

Influence of stainless steel roughness on biofilm formation by Listeria monocytogenes

An article (PATHIRAJAH et al. 2022, Influence of Different Stainless Steel Finishes on Biofilm Formation by Listeria monocytogenes, J Food Prot (2022) 85 (11): 1584–1593) investigates the effect of Stainless steel (SS) roughness on the attachment of  Listeria monocytogenes. The goal was to see whether there were finishes with significantly lower bacterial attachment. The number of adhered cells increased with time on all stainless steel finishes. Eight-hour results showed a significant difference (P< 0.05) in biofilm cell counts in biofilms between the roughest and finest surfaces. Data gained after 4-h, 24-h, and 24-h plus an additional 24-h continuous flow cultivation showed no significant difference in attachment among surfaces. No correlation between roughness data and attachment was found after all four incubation times, suggesting that roughness values at these ranges are insufficient in determining the surfaces’ affinity to bacteria. Overall, this study suggests that roughness values cannot be used to predict the degree of L. monocytogenes attachment to a specific stainless steel surface. @ https://meridian.allenpress.com/jfp/article-abstract/85/11/1584/485622/Influence-of-Different-Stainless-Steel-Finishes-on?redirectedFrom=fulltext

Influence of Different Stainless Steel Finishes on Biofilm Formation by Listeria monocytogenes

ABSTRACT. Biofilm formation of Listeria monocytogenes on stainless steel, a widely used abiotic surface in the food processing industry, was investigated by focusing on the attachment tendency and behavior of L. monocytogenes 08-5578 on eight different stainless steel surfaces: glass bead blasted (rough and fine), deburred (Timesaver), drum deburred, pickled, pickled and drum polished, electrolytic polished, and cold rolled (untreated control). The aim was to see whether there are finishes with significantly lower bacterial attachment. Surface roughness data (measured via four roughness parameters), determined by interferometry, was also compared with the number of adhering cells to detect possible correlations. Cultivation of L. monocytogenes biofilms was carried out using a CDC biofilm reactor with 1% tryptic soy broth set at 20°C for 4, 8, and 24 h. In addition, a cultivation trial was run with continuous nutrient flow (1% tryptic soy broth, 6.2 mL/min) for 24 h. Eight-hour results showed a significant difference (P < 0.05) in biofilm cell counts in biofilms between the glass bead–blasted surfaces (3.23 and 3.26 log CFU/cm2 for the fine and rough, respectively) and deburred (Timesaver) surface (2.57 log CFU/cm2), between drum deburred and deburred (Timesaver) surface (3.41 versus 2.57 log CFU/cm2), and between drum deburred and pickled surface (3.41 versus 2.77 log CFU/cm2). Data gained after 4-h, 24-h, and 24-h plus an additional 24-h continuous flow cultivation showed no significant difference in attachment among surfaces. No correlation between roughness data and attachment was found after all four incubation times, suggesting that roughness values, at these ranges, are insufficient in determining the surfaces' affinity to bacteria. Overall, this study suggests that roughness values cannot be used to predict the degree of L. monocytogenes attachment to a specific stainless steel surface.HIGHLIGHTSThe number of adhered cells increased with time on all stainless steel finishes.There were significant differences in adhered cell counts between surfaces after 8 h of cultivation.No correlation between roughness data and attachment was observed.Range of roughness studied cannot be used to predict degree of Listeria attachment.

The Quebec Ministry of Agriculture and Food warned customers not to eat bacon sold by Les Aliments Felix Mish

The Ministry of Agriculture, Fisheries and Food (MAPAQ), in collaboration with the Food Inspection Division of the City of Montreal and the company Les Aliments Felix Mish inc.(1903, rue Jolicoeur, Montreal), warned the public not to consume ready-to-eat cooked bacon because this food may contain Listeria monocytogenes. The product subject to this warning was sold until October 25, 2022. Les Aliments Felix Mish recalled e product in question. No case of illness associated with the consumption of this food has been reported to MAPAQ to date. @ https://www-quebec-ca.translate.goog/nouvelles/actualites/details/avis-de-ne-pas-consommer-de-bacon-cuit-pret-a-manger-prepare-et-vendu-par-lentreprise-les-aliments-felix-mish-inc-43840?_x_tr_sl=fr&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=sc

 

MISE EN GARDE À LA POPULATION QUÉBEC, le 4 nov. 2022 /CNW Telbec/ – Le ministère de l’Agriculture, des Pêcheries et de l’Alimentation (MAPAQ), en collaboration avec la Division de l’inspection des aliments de la Ville de Montréal et l’entreprise Les…