Category Archives: Food Microbiology Research

USA – Foodborne Illness Outbreak at Dave’s Sushi Under Investigation; now up to 30 cases.

Posted on May 4, 2023 by | Leave a comment

Food Poisoning News

Bozeman, Montana – The Gallatin City-County Health Department, the Department of Public Health and Human Services (DPHHS), and federal agencies are continuing their investigation into the foodborne illness outbreak at Dave’s Sushi, which has been linked to two recent deaths in the area. The outbreak appears to be isolated to customers who dined at Dave’s Sushi between March 31 and April 17, 2023. The restaurant remains closed, with no further risk to the public.

According to the DPHHS, at least 30 individuals have been identified as being associated with the outbreak, having eaten at the restaurant within the specified time frame. Of these, three individuals experienced severe outcomes, including hospitalizations, and two deaths are being investigated. Autopsy and toxicology results for the deceased individuals are still pending.

Preliminary investigative findings suggest that food containing morel mushrooms may be the source of concern. However, no specific pathogen or toxin has been identified as of yet. Both state and federal partners are continuing to test clinical and food samples.

The DPHHS has determined that the morel mushrooms served at Dave’s Sushi were not distributed to any other restaurants or businesses in Montana. The mushrooms were cultivated in China, shipped to a distributor in California, and subsequently sent to multiple states. At this time, no known associated illnesses in other states have been identified.

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Posted in Decontamination Microbial, food bourne outbreak, Food Illness, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Foodborne Illness, Foodborne Illness Death, foodborne outbreak, foodbourne outbreak, Illness, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, outbreak

Research – Impact of gas ultrafine bubbles on the efficacy of antimicrobials for eliminating fresh and aged Listeria monocytogenes biofilms on dairy processing surfaces

Posted on May 3, 2023 by | Leave a comment

Wiley Online

Abstract

Ultrafine bubbles (UFB) are a novel concept that has the potential to enhance the potency of antimicrobials to eliminate biofilms. This study investigated the impact of incorporating gas (air, CO2, and N2) UFB on the potency of chlorine (Cl2; 50, 100, and 200 ppm) and peracetic acid (PAA; 20, 40, and 80 ppm) antimicrobial (AM) solutions against fresh (3 days) and aged (30 days) Listeria monocytogenes biofilms on polypropylene, silicone, and stainless steel surfaces. Listeria monocytogenes biofilms were statically grown on polypropylene, silicone, and stainless steel coupons (7.62 × 2.54 cm) at 25°C for 3 or 30 days, by immersing in a three-strain cocktail of L. monocytogenes in brain heart infusion (BHI) broth. The coupons were treated by submerging in AM solutions with or without UFB for 1 min, then swabbed into Dey-Engley neutralizing broth and enumerated on BHI agar. Incorporation of air, CO2, and N2 UFB in AM solutions resulted in significantly increased log reductions (0.4–1.5 logs) of fresh and aged L. monocytogenes biofilms on polypropylene and stainless steel surfaces, whereas incorporation of CO2 UFB in AM solutions resulted in ~1 log greater reductions of fresh and aged L. monocytogenes biofilms on silicone surfaces compared with AM solutions without UFB. This study also demonstrated that 200 ppm Cl2 was most effective against fresh and aged L. monocytogenes biofilms on polypropylene, silicone, and stainless steel surfaces compared with 50 ppm Cl2, 20 ppm PAA, and 40 ppm PAA.

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Posted in Biofilm, Decontamination Microbial, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Listeria, Listeria monocytogenes, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology

USA – Two possibly dead linked to Dave’s Sushi in Bozeman

Posted on May 3, 2023 by | Leave a comment

Food Poison Journal

According to press reports, Gallatin County Sheriff Dan Springer tells MTN News that Donna Ventura, age 64, died of a possible foodborne illness, after eating at Dave’s Sushi. The cause of Ventura’s death has not been confirmed as officials are waiting on autopsy and toxicology results.

According to earlier press reports, William “Bill” Lewis 74, of Townsend, died after eating at Dave’s Sushi, according to Broadwater County Sheriff Nick Rauser, who is also the county coroner. Sheriff Rauser says the 74-year-old man died at his home in Broadwater County. Sheriff Rauser says the call came in at 6:34 AM on the morning of April 18 and a relative told the responding officer that the man had eaten at Dave’s Sushi the night before, the same night the Gallatin County Health Department reported they received complaints of people becoming ill which led to the investigation and closure of the restaurant.

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Posted in Death, food death, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Food Poisoning Death, Foodborne Illness Death, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk

New Zealand – Barista Bros brand Double Espresso Ice Coffee – Microbial Contamination

Posted on May 3, 2023 by | Leave a comment

MPI

Last reviewed: 

Barista Bros brand Double Espresso Ice Coffee (500ml)
Product identification
Product type Flavoured milk
Name of product (size) Barista Bros brand Double Espresso Ice Coffee (500ml)
Date marking Between 30 SEP 23 up to and including 25 DEC 23
Package size and description The product is sold in a plastic 500ml bottle.
Distribution The product is imported from Australia.

The product is sold at selected retail outlets and supermarkets throughout New Zealand.

The product has not been re-exported.
Notes This recall does not affect any other Barista Bros brand products.

Point of sale notice for retailers

If you are a retailer of the products in this recall, download a copy of the point of sale notice. You need to display it in your store for one month.

Point of sale notice – Barista Bros brand Double Espresso Ice Coffee [PDF, 46KB]

Consumer advice

Customers are asked to check the date marking on the bottom edge of the product.

Affected product should not be consumed. There have been no reports of associated illness, however if you have consumed any of this product and have any concerns about illness, seek medical advice.

Customers should return the product to their retailer for a full refund.

Who to contact

If you have questions, contact Coca-Cola Europacific Partners New Zealand Ltd:

  • Phone: 0800 26 22 26
  • Address: The Oasis, Mt Wellington, Auckland, New Zealand.

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Posted in Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, MPI

Denmark – Salmonella outbreak sickens 16 and kills one in Denmark

Posted on May 2, 2023 by | Leave a comment

Food Safety News

Danish officials are searching for the source of a Salmonella outbreak that has affected 16 people with one recorded death.

During March and April 2023, 16 cases of Salmonella Muenchen have been recorded.

Eight men and eight women are sick. Patients are aged between 10 and 95 with a median of 73 years old. One person has died and seven have been hospitalized.

Ill people live all over the country with eight cases in Hovedstaden, four in Sjælland, three in Midtjylland, and one in Syddanmark.

The Statens Serum Institut (SSI), Danish Veterinary and Food Administration (Fødevarestyrelsen), and DTU Food Institute are investigating the outbreak.

SSI is continuing to whole genome sequence isolates from patients and interview them or their relatives to try and identify a possible source of infection.

Whole genome sequencing of bacteria isolated from patients has found they were very closely related which suggests that there is a common source of infection.

Salmonella Muenchen is a rare type in Denmark with usually only around two to eight cases per year.

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Posted in Death, food bourne outbreak, food death, Food Illness, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Food Poisoning Death, Foodborne Illness, Foodborne Illness Death, foodborne outbreak, foodbourne outbreak, Illness, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, outbreak, Salmonella

USA – Possible Hepatitis A contamination leads to frozen blackberry recall

Posted on May 2, 2023 by | Leave a comment

Food Safety News

Patagonia Food LLC, of San Luis Obispo, CA, is recalling certain frozen blackberries because of possible hepatitis A contamination.

According to the company recall posted by the Food and Drugs Administration (FDA), the recall was initiated on March 17 and is ongoing. There is concern that consumers may have the frozen fruit in their home freezers.

The recalled blackberries were distributed in California, Oregon, Nebraska, Texas, Washington and Nevada.

Recalled product:

Product Description Recall Number Class Code Info Product Quantity Reason for Recall
Patagonia Foods 3610100 Blackberry IQF Product of Mexico Net Wt. 30 LBS. (13.61 kg) Production/Lot Code 20422 Distributed By: Patagonia Foods, LLC. San Luis Obispo, CA 93401 patagoniafoods.com F-0760-2023 Class I Lot Code: 20422 Possible Hepatitis A in blackberries

Consumers who purchased the recalled products should immediately dispose of them and not consume them.

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Posted in Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, food recall, Hepatitis A, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, Recall

USA – Researchers say raw milk infected people in Tennessee; one baby developed kidney failure

Posted on May 2, 2023 by | Leave a comment

Food Safety News

A new report describes how raw, unpasteurized milk in Tennessee likely caused infections in people, including infants, one of whom developed kidney failure.

The report from the Center for Infectious Disease Research & Policy (CIDRAP) discusses two babies who developed E. Coli infections after being fed raw milk from a cow-sharing arrangement in Tennessee.

Often called “herd-shares,” such arrangements get around bans on raw milk sales by legally allowing people to buy part of a herd or of a single animal so that they can consume unpasteurized milk. Participants in herd-share operations pay a farmer to care for and milk the animals.

The babies discussed in the new CIDRAP report developed diarrhea between July 25 and Aug. 1, 2022. Testing revealed Shiga toxin-producing E. coli (STEC). Both households received raw milk from participants in the same cow share. The baby who developed kidney failure (hemolytic uremic syndrome) was hospitalized for 27 days.

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Posted in Bacterial Toxin, Decontamination Microbial, Food Illness, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Foodborne Illness, HUS, Illness, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, Raw Milk, STEC, STEC E.coli

USA – Public Health reports 88 people got food poisoning at event – Bacillus cereus

Posted on May 2, 2023 by | Leave a comment

GUELPH TODAY

More than 80 people were left with food poisoning after attending an International Women’s Day event in Orangeville last month, reports Wellington-Dufferin-Guelph Public Health.

Held on March 8, around 244 guests attended the Best Western Plus Orangeville & Suites for an International Women’s Day luncheon; at least 88 of those guests found themselves experiencing vomiting, diarrhea, headaches and nausea after eating contaminated food at the event. 

The primary culprits were the sweet potatoes and quinoa in the chicken bowl, which was prepared by an outside caterer. 

Public Health inspectors found the food was contaminated with the bacillus cereus bacteria, which lives in soil and can easily attach itself to vegetables and fruits. 

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Posted in Bacillus, Bacillus cereus, food bourne outbreak, Food Illness, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Food Poisoning, Foodborne Illness, foodborne outbreak, foodbourne outbreak, Illness, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, outbreak

UK – Müller recalls various Cadbury branded dessert products because of the possible presence of Listeria monocytogenes

Posted on May 2, 2023 by | Leave a comment

FSA

Müller has taken the precautionary step of recalling some batches of various Cadbury branded dessert products because of the possible presence of Listeria monocytogenes.

Product details

Cadbury Daim Chocolate Dessert
Pack size 75g
Use by 18 May 2023
Cadbury Crunchie Chocolate Dessert
Pack size 75g
Use by 17 May 2023
Cadbury Flake Chocolate Dessert
Pack size 75g
Use by 17 May 2023
Cadbury Dairy Milk Buttons Chocolate Dessert
Pack size 75g
Use by 18 May 2023
Cadbury Dairy Milk Chunks Chocolate Dessert
Pack size 75g
Use by 18 May 2023
Cadbury Heroes Chocolate Dessert (six pack)
Pack size 6 x 75g
Use by 18 May 2023

Risk statement

The products listed above might be contaminated with Listeria monocytogenes.

Symptoms caused by this organism can be similar to flu and include high temperature, muscle ache or pain, chills, feeling or being sick and diarrhoea. Some people are more vulnerable to listeria infections, including those over 65 years of age, pregnant women and their unborn babies, babies less than one month old and people with weakened immune systems.

Action taken by the company

Müller is recalling the above products and has issued point-of-sale notices to their customers. These notices explain to customers why the products are being recalled and tell them what to do if they have bought the products. Please see the attached notices.

Customer notice: Müller recalls various Cadbury branded dessert products (89.01 KB)

Our advice to consumers

If you have bought any of the above products do not eat them. Instead, return them to the store from where they were bought for a full refund (with or without a receipt). For more information contact Müller on team_cccare@muller.co.uk or 07354 835 893.

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Posted in food contamination, food handler, Food Hazard, Food Hygiene, Food Inspections, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Food Pathogen, Food Quality, food recall, Food Safety, Food Safety Alert, Food Safety Management, Food Safety Regulations, Food Testing, Listeria, Listeria monocytogenes

Research – A Review of Modern Methods for the Detection of Foodborne Pathogens

Posted on May 1, 2023 by | Leave a comment

MDPI

Abstract

Despite the recent advances in food preservation techniques and food safety, significant disease outbreaks linked to foodborne pathogens such as bacteria, fungi, and viruses still occur worldwide indicating that these pathogens still constitute significant risks to public health. Although extensive reviews of methods for foodborne pathogens detection exist, most are skewed towards bacteria despite the increasing relevance of other pathogens such as viruses. Therefore, this review of foodborne pathogen detection methods is holistic, focusing on pathogenic bacteria, fungi, and viruses. This review has shown that culture-based methods allied with new approaches are beneficial for the detection of foodborne pathogens. The current application of immunoassay methods, especially for bacterial and fungal toxins detection in foods, are reviewed. The use and benefits of nucleic acid-based PCR methods and next-generation sequencing-based methods for bacterial, fungal, and viral pathogens’ detection and their toxins in foods are also reviewed. This review has, therefore, shown that different modern methods exist for the detection of current and emerging foodborne bacterial, fungal, and viral pathogens. It provides further evidence that the full utilization of these tools can lead to early detection and control of foodborne diseases, enhancing public health and reducing the frequency of disease outbreaks.

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Posted in Bacterial Toxin, Decontamination Microbial, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Food Pathogen, Food Toxin, Food Virus, foodborne disease, Foodborne Illness, foodborne outbreak, foodbourne outbreak, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, Mycotoxin, Pathogen, pathogenic