Monthly Archives: August 2019

Research – Keeping livestock in the yard just might help your baby’s immune system

Science Daily

Getting up close — and a little dirty — with farm animals just might help us fend off illness, say researchers who’ve further demonstrated the benefits of early exposure to a wide variety of environmental bacteria.

Scientists from The Ohio State University found that bacteria and other microbes from rural Amish babies was far more diverse — in a beneficial way — than what was found in urban babies’ intestines. And, in a first-of-its-kind experiment, they found evidence of how a healthier gut microbiome might lead to more robust development of the respiratory immune system.

The study was published this month in the journal Frontiers in Immunology.

“Good hygiene is important, but from the perspective of our immune systems, a sanitized environment robs our immune systems of the opportunity to be educated by microbes. Too clean is not necessarily a good thing,” said the study’s co-lead author Zhongtang Yu, a professor of microbiology in Ohio State’s Department of Animal Sciences and a member of the university’s Food Innovation Center.

Research – An apple carries about 100 million bacteria — good luck washing them off

Science Daily

A new study shows that organic apples harbor a more diverse and balanced bacterial community — which could make them healthier and tastier than conventional apples, as well as better for the environment.

Research – Prediction of Persistence of Listeria monocytogenes ST451 in a Rabbit Meat Processing Plant in the Czech Republic

Journal of Food Protection

ABSTRACT

This study was focused on characterization of the genetic diversity of Listeria monocytogenes isolated from packed fresh rabbit meat obtained from one producer via retail outlets. The partial aim was to compare the characteristics of a suspect persistent strain with strains from human cases. The occurrence of L. monocytogenes in vacuum-packed rabbit meat was monitored during 2013 to 2016. All strains were characterized by serotyping, pulsed-field gel electrophoresis, and multilocus sequence typing (MLST). Selected strains, which represented each year, were analyzed using the whole genome sequencing method. L. monocytogenes was detected in 21 (38%) of 56 originally packed rabbit meat samples from one food producer during the whole monitored period. All strains showed the identical serotype (1/2a), AscI/ApaI pulsotype (735/2), and sequence type (ST451). The clonal similarity of strains from rabbit meat was also confirmed on the basis of core genome MLST (on 1,701 loci). This fact suggests the occurrence of a suspect persistent strain in the meat processing plant. Results of core genome MLST enabled us to unambiguously exclude rabbit meat as a source of listeriosis in humans caused by the indistinguishable AscI/ApaI pulsotype and sequence type, although all strains carried all genes important for the virulence of L. monocytogenes. No specific genes that may be associated with its persistence in the food processing environment were detected among the tested strains of ST451.

HIGHLIGHTS
  • Rabbit meat is not often reported as a source of L. monocytogenes.

  • Rare ST451 was detected as a suspect persistent strain for the first time.

  • Genetic factors linked to persistence of L. monocytogenes ST451 were not found.

  • PMSC mutations in inlA, inlB, and LIPI-1 genes were not detected in tested strains.

USA – Conagra Brands, Inc. Recalls Canned Beef Products Due to Possible Processing Defect

USDA

WASHINGTON, July 31, 2019  – Conagra Brands, Inc., a Milton, Pa. establishment, is recalling approximately 32,400 pounds of canned beef products due to a potential processing defect, resulting in the potential survival of bacterial pathogens in the products, the U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) announced today.

The canned beef items were produced on July 18, 2019. The following products are subject to recall: [View labels (PDF only)]

  • 15-oz. canned items of “Kaskey’s BEEFY MAC PASTA IN TOMATO & MEAT SAUCE” with Best By JUL 07 2021.

The products subject to recall bear establishment number “EST. 794” inside the USDA mark of inspection. These items were shipped to distribution centers and retail locations in Indiana, Kentucky, Maryland and Texas.

The problem was discovered by the establishment on July 27, 2019 during routine activities.

There have been no confirmed reports of adverse reactions due to consumption of these products. Anyone concerned about an injury or illness should contact a healthcare provider.

Consumers who have purchased these products are urged not to consume them. These products should be thrown away or returned to the place of purchase.

USA – Listeria linked to Raw Milk

Food Poison Journal

The state of New York is warning people to not consume unpasteurized raw milk from Churchtown Dairy due to possible contamination of Listeria Monocytogenes.

On Friday, the state Department of Agriculture & Markets notified the dairy farm that a presumptive positive detection for Listeria was made from a bottled milk sample pulled from the dairy’s cooler on July 22. Listeria Monocytogenes is a species of bacteria that can cause the infection Listeriosis.

No reported cases of the illness associated with the milk have been reported.

USA – 580 Cyclospora cases in United States – Over 2000 in 2018

Food Poison Journal

On July 25, the FDA announced an investigation into a Cyclospora outbreak linked to imported fresh basil by Siga Logistics from Mexico. Siga

The FDA is recommending consumers not to buy, eat, or serve any fresh basil exported by Siga Logistics and not to consume or serve uncooked items such as pesto or salad that may contain basil from Mexico.

Cyclospora is a parasite composed of one cell, too small to be seen without a microscope.

Research -Toxin responsible for Legionella growth identified

Science Daily

Legionella A

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Pneumonia resulting from exposure to Legionella — although uncommon and affecting only 1 in 100,000 in Europe — has a higher than 10% fatality rate. The pathogenic bacterium Legionella pneumophila has more than 300 toxins that it uses to infect humans. Once the aerosols containing the bacteria are inhaled, Legionella enters the lungs where it starts infecting human cells, causing pneumonia.

Legionella toxins especially target the innate immune pathways facilitating the survival of the bacteria inside human cells and allowing the replication of the bacteria. Due to the large number of toxins it is difficult to see the effects of deleting one or multiple of these toxins on the Legionella infection capacities. This is further complicated by the fact that several toxins with similar functions exist inside the bacteria. This makes Legionella hard to target with specific drugs.

RASFF Alerts – Ochratoxin A – Raisins – Pistachios – Raisin Fruit Filling – Dried Grapes –

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RASFF – ochratoxin A (20.6 µg/kg – ppb) in raisins from Turkey in the UK

RASFF – ochratoxin A (71 µg/kg – ppb) in pistachios from the United States in the Netherlands

RASFF – ochratoxin A (18 µg/kg – ppb) in raisins from Turkey in France

RASFF – ochratoxin A (19.7 µg/kg – ppb) in raisin fruit filling from the Czech Republic in the Czech Republic

RASFF – ochratoxin A (17 µg/kg – ppb) in dried grapes from Turkey in France

RASFF – ochratoxin A (53 µg/kg – ppb) in pistachios from the United States in the Netherlands

RASFF Alerts – Aflatoxin – Blanched Groundnuts – Shelled Peanuts – Nutmeg – Peanuts

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RASFF – aflatoxins (B1 = 11.0; Tot. = 12.7 µg/kg – ppb) in blanched groundnut kernels from China in the UK

RASFF – aflatoxins (B1 = 204; Tot. = 244 µg/kg – ppb) in shelled peanuts from Angola in Portugal

RASFF – aflatoxins (B1 = 12; Tot. = 12 µg/kg – ppb) in nutmeg from Indonesia in the Netherlands

RASFF – aflatoxins (B1 = 7.1; Tot. = 8.6 µg/kg – ppb) in peanuts from Brazil in Spain

RASFF Alert – Listeria monocytogenes – Black Pudding Sausage

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RASFF – Listeria monocytogenes (10000; 2000; 10000; 1100; 1300 CFU/g) in black pudding sausage from Spain in Portugal