Category Archives: Microbiology Investigations

Slovakia – Safe defrosting of food – promotional leaflet in Slovakian

MPSR

The National Contact Point EFSA (Department of Food Safety and Nutrition MPRV SR ) in cooperation with the European Food Safety Authority has prepared a leaflet on safe defrosting of food in the Slovak language.

The leaflet presents basic information on defrosting food, usable in every household. By reducing the mistakes that consumers make when handling frozen food incorrectly, the formation of harmful bacteria is eliminated. Proper thawing procedures reduce the risk of foodborne illness and reduce food waste.

Hungary – Hungary seeks data on consumers’ habits with frozen vegetables

Food Safety News

Link to Portal

Hungary’s food agency has launched a survey to find out more on people’s habits related to quick-frozen vegetables.

The National Food Chain Safety Office (Nébih) said it would provide the authority with a picture of the risks at the consumer level for the product category.

An online questionnaire can be completed until March 31 and covers consumer preferences for frozen vegetables and whether they follow the instructions on the label. There are also questions on Listeria monocytogenes, Salmonella and E. coli.

Past outbreak
From 2015 to 2018, an outbreak of Listeria monocytogenes caused by contamination of frozen corn produced in Hungary by Greenyard affected five countries in Europe as well as Australia with 54 confirmed patients and 10 deaths.

Despite the contamination, illnesses could have been prevented or reduced if people had been aware of the food safety risks and how to avoid them, according to Nébih.

To identify the hazards and reduce the risks, the agency is going to assess domestic consumer habits.

The questionnaire seeks answers to what Hungarian consumers think about quick-frozen products, how often they eat them and their preparation habits. The survey also looks at whether people are aware of food safety risks during purchase, transport, home storage and preparation and their knowledge about refrigerator and freezer temperatures as well as thawing and refreezing.

Based on the results, Nébih will put together a guide for consumers highlighting the most important findings. The agency will also give advice on how to minimize the food safety risks associated with quick-frozen vegetables in households.

Fagyasztott zöldségek vásárlásáról és fogyasztásáról gyűjt információkat a Nébih

Új kutatást indít a Nemzeti Élelmiszerlánc-biztonsági Hivatal (Nébih) a magyar lakosság gyorsfagyasztott zöldségekhez kapcsolódó vásárlási, felhasználási és fogyasztási szokásainak megismerése érdekében. A március 31-ig kitölthető online kérdőív többek között arra is kitér, hogy a fogyasztók mennyire kedvelik a fagyasztott zöldségeket, milyen ételekhez vásárolják őket, vagy, hogy figyelembe veszik-e a jelölésen szereplő felhasználási utasításokat. A kutatás segítségével a hatóság átfogó képet kaphat arról, milyen valós kockázatok merülnek fel fogyasztói szinten e termékkategóriával kapcsolatban.
Néhány éve az EU-ban lezajlott egy több országot is érintő, gyorsfagyasztott zöldségekhez kapcsolódó Listeria monocytogenes járvány. Az élelmiszerbiztonsági pandémiában bizonyítottan 46 személy betegedett meg és szorult kórházi kezelésre, valamint 5 haláleset is történt. Szomorú tény, hogy a szennyezés ellenére a megbetegedések megelőzhetők lettek volna, ha a fogyasztók tisztában vannak az élelmiszerbiztonsági kockázatokkal és azok elkerülésének módjával.
A veszélyforrás azonosítása és csökkentése érdekében a Nébih szeretné felmérni a hazai fogyasztói szokásokat. A hivatal https://portal.nebih.gov.hu/felmeres linken elérhető online kérdőíve többek között arra keresi a választ, hogy a magyar fogyasztók mit gondolnak a gyorsfagyasztott termékekről, miket részesítenek előnyben, vannak-e általános és speciális elkészítési szokásaik, továbbá elolvassák-e, betartják-e a jelölésen szereplő utasításokat. A felmérés arra is kitér, hogy a fogyasztók tisztában vannak-e az élelmiszerbiztonsági kockázatokkal a vásárlás, a szállítás, az otthoni tárolás és az előkészítés során.
A kérdőív segítségével a hatóság átfogó képet kaphat arról, hogy melyek a legjelentősebb kockázatok fogyasztói szinten e termékkategóriában. Az eredmények alapján a Nébih egy lakosságnak szóló tájékoztatót is összeállít a későbbiekben, kiemelve a felmérés szerinti kritikus pontokat. Az útmutatóban a hatóság azt is bemutatja majd, hogyan lehet a háztartásokban a gyorsfagyasztott zöldségekhez kapcsolódó élelmiszerbiztonsági kockázatokat a minimumra csökkenteni.
Az adatgyűjtés 2022. március 31-ig tart. A kérdőív kitöltése 10-15 percet vesz igénybe. A felmérés az alábbi linken elérhető: https://portal.nebih.gov.hu/felmeres

2022. március 4.

USA – Nebraska: Norovirus and Rotavirus Outbreaks reported in the south central part of state

Outbreak News Today

norovirus-1080x655

The Two Rivers Public Health District in south-central Nebraska is reporting an increase of both norovirus and rotavirus cases in the district.

Norovirus and rotavirus outbreaks also frequently occur in schools, childcare centers, colleges, and universities. Both norovirus and rotavirus are spread by accidentally getting tiny particles of feces (poop) or vomit from an infected person in your mouth. Outbreaks on school and university campuses have even led to campus closures. Close quarters, shared spaces, and high-touch surfaces make it easy for norovirus and rotavirus to spread.

Health officials strongly recommends taking the following actions:
• Washing hands carefully and frequently
• Staying home when experiencing vomiting and diarrhea
• Careful cleaning of surfaces that have had contact with vomit and diarrhea using an EPA certified cleaning products

RASFF Alerts – Animal Feed – Salmonella – Organic Soya Press – Raw Cat Petfood

RASFF

Salmonella Abaetetuba in organic soya press cake from China in Belgium, Germany and Netherlands

RASFF

Salmonella Infantis in raw petfood for cats from the Netherlands in Belgium and France

USA – Felix Custom Smoking Enjoined From Distributing Seafood Products – Listeria

Food Poisoning Bulletin

Felix Custom Smoking has been enjoined from distributing seafood products through a consent decree filed on March 9, 2022 by the FDA and the U.S. Justice Department. The owner of that establishment, Diane Zollinger, has allegedly violated the Federal Food, Drug, and Cosmetic Act (FDCA) by distributing “adulterated ready-to-eat seafood products, including fish jerky and cold- and hot-smoked salmon,” according to the complaint.

The business sells products directly to consumers from its location and through farmers markets, as well as providing custom processing for fishermen and other wholesalers. The facility is located in Monroe, Washington. The claims made in the complaint are allegations that, if the case were to proceed to trail, the government must prove by a preponderance of the evidence.

FDA inspectors visited the facility in 2021 and found “a significant infestation of flies and other filthy conditions that can create an ideal environment for the growth of harmful bacteria, such as Listeria monocytogenes,” according to the complaint. The FDA took multiple samples at the facility and confirmed the presence of Listeria monocytogenes in and around food preparation areas.

Genetic testing showed that the same strain of Listeria Monocytogenes had been present in the facility since at least 2018, and a sample of seafood from one of the company’s customers also showed the same strain of Listeria, according to the complaint. FDA issued a public health alert against purchasing or eating Felix Custom Smoking seafood products on August 27, 2021

The injunction requires the company to eliminate Listeria monocytogenes at their facility, make sanitation improvements, and comply with federal food safety regulations before processing or distributing any more seafood.

USA – FDA Core Investigation Table

FDA

Date
Posted
REF Pathogen
Product(s)
Linked to
Illnesses

(if any)
Total
Case Count

Status
Outbreak
Status
2/17/

2022

1056 Cronobacter
sakazakii
Powdered
Infant
Formula
See
Advisory
Active Ongoing
See
Advisory
2/9/

2022

1040 Listeria
monocytogenes
Not Yet
Identified
14 Active Ongoing
See Advice
2/2/

2022

1054 Enteroinvasive
E. coli
O143:H26
Not Yet
Identified
16 Closed Ended
See Advice
1/10/

2022

1050 E. coli
O121:H19
Romaine 4 Closed Ended
12/29/

2021

1052 E. coli
O157:H7
Packaged
Salad
See Outbreak
Advisory
Closed Ended
See Outbreak
Advisory
12/20/

2021

1039 Listeria
monocytogenes
Packaged
Salad
See Outbreak
Advisory
Closed Ended
See Outbreak
Advisory
12/15/

2021

1048 Listeria
monocytogenes
Packaged
Salad
See Outbreak
Advisory
Active Ongoing
See Outbreak
Advisory

UK – Sneyd’s Wonderfeeds Ltd recalls pet feed because of the presence of salmonella

FSA

9 March 2022

Sneyd’s Wonderfeeds Ltd is recalling several pet feed products because of the presence of salmonella in one of the ingredients used to manufacture the products listed below.

Product details

Sneyd’s Wonderdog Active Light
Pack size 15Kg
Batch code 57 58
Best before 21 December 2022 06 January 2023
Sneyd’s Wonderdog Special
Pack size 15Kg
Batch code All batches from 1383 through to 1408
Best before All dates from 03 December 2022 up to and including 14 February 2023
Sneyd’s Wonderdog Original
Pack size 15Kg
Batch code All batches from 3239 through to 3264
Best before All dates from 03 December 2022 up to and including 14 February 2023

Risk statement

The presence of salmonella in the products listed above. Salmonella is a bacterium that can cause illness in humans and animals. The products could therefore carry a potential risk, because of the presence of salmonella, either through direct handling of the product, or indirectly, for example from pet feeding bowls, utensils or contact with the faeces of animals.

In humans, symptoms caused by salmonella usually include fever, diarrhoea and abdominal cramps. Infected animals may not necessarily display signs of illness, but symptoms can include diarrhoea.

Action taken by the company

Sneyd’s Wonderfeeds is recalling the above products. Point of sale notices will be displayed in all retail stores that have sold these products. These notices explain to customers why the products are being recalled and tell them what to do if they have bought the products.

Our advice to consumers

(pet owners): If you have bought any of the above products do not use them. Instead contact Sneyd’s Wonderfeeds for further advice: Call 01724 872 448 or email info@wonderdog.co.uk

Research – High-pressure processing: food safety without compromising quality

EFSA

High-pressure processing (HPP) of food is effective at destroying harmful microorganisms and poses no more food safety concerns than other treatments. These are two of the conclusions of a scientific opinion published by EFSA today.

EFSA experts assessed the safety and efficacy of HPP of food and, more specifically, whether it can be used to control Listeria monocytogenes in ready-to-eat (RTE) foods and as an alternative to thermal pasteurisation of raw milk.

HPP is a non-thermal food preservation technique that kills microorganisms that can cause diseases or spoil food. It uses intense pressure for a certain time and has minimal effects on taste, texture, appearance, or nutritional values.

HPP can be used at different steps of the food chain, usually on pre-packed products. It can be applied to raw materials such as milk, fruit juices, and smoothies but also to products that have already been processed, such as sliced cooked meat products and RTE meals. In the latter case, it reduces the contamination originating from the manufacturing environment, for example during slicing and manipulation of the products.

This processing method reduces levels of Listeria monocytogenes in RTE meat products, at specific time-pressure combinations defined in the scientific opinion. In general, the longer the duration and intensity of the pressure, the more reduction is achieved. This is an important finding because L. monocytogenes contamination of RTE foods is a public health concern in the EU. HPP also proved to be effective at decreasing the levels of other pathogens, such as Salmonella and E. coli.

For raw milk, experts identified the time-pressure combinations that can be considered to have the same effect as thermal pasteurisation. These vary depending on the pathogen considered.

HPP is not specifically regulated at EU level and EFSA’s advice will inform the possible decisions of risk managers in this field.

Research – The Importance of Shiga Toxin-Producing Escherichia coli O145:NM[H28]/H28 Infections in Argentina, 1998–2020

MDPI

Shiga toxin-producing Escherichia coli (STEC) is known as a pathogen associated with food-borne diseases. The STEC O145 serogroup has been related with acute watery diarrhea, bloody diarrhea, hemorrhagic colitis, and hemolytic uremic syndrome (HUS). Argentina has the highest rate of HUS worldwide with 70% of the cases associated with STEC infections. We aimed to describe the epidemiology and genetic diversity of STEC O145 strains isolated across Argentina between 1998–2020. The strains isolated from 543 cases of human disease and four cattle, were pheno-genotipically characterized. Sequencing of five strains was performed. The strains were serotyped as O145:NM[H28]/H28, O145:H25, and O145:HNT, and mainly characterized as O145:NM[H28]/stx2a/eae/ehxA (98.1%). The results obtained by sequencing were consistent with those obtained by traditional methods and additional genes involved in different mechanisms of the pathogen were observed. In this study, we confirmed that STEC O145 strains are the second serogroup after O157 and represent 20.3% of HUS cases in Argentina. The frequency of STEC O145 and other significant serogroups is of utmost importance for public health in the country. This study encourages the improvement of the surveillance system to prevent severe cases of human disease. View Full-Text

Research – Fruit Juice Spoilage by Alicyclobacillus: Detection and Control Methods—A Comprehensive Review

MDPI

Fruit juices have an important place in humans’ healthy diet. They are considered to be shelf stable products due to their low pH that prevents the growth of most bacteria. However thermo-acidophilic endospore forming bacteria of the genus Alicyclobacillus have the potential to cause spoilage of commercially pasteurized fruit juices. The flat sour type spoilage, with absence of gas production but presence of chemical taint compounds (mostly guaiacol) and the ability of Alicyclobacillus spores to survive after pasteurization and germinate under favorable conditions make them a major concern for the fruit juice industry worldwide. Their special characteristics and presence in the fruit juice industry has resulted in the development of many isolation and identification methods based on cell detection (plating methods, ELISA, flow cytometry), nucleic acid analysis (PCR, RAPD-PCR, ERIC-PCR, DGGE-PCR, RT-PCR, RFLP-PCR, IMS-PCR, qPCR, and 16S rRNA sequencing) and measurement of their metabolites (HPLC, GC, GC-MS, GC-O, GC-SPME, Electronic nose, and FTIR). Early detection is a big challenge that can reduce economic loss in the industry while the development of control methods targeting the inactivation of Alicyclobacillus is of paramount importance as well. This review includes a discussion of the various chemical (oxidants, natural compounds of microbial, animal and plant origin), physical (thermal pasteurization), and non-thermal (High Hydrostatic Pressure, High Pressure Homogenization, ultrasound, microwaves, UV-C light, irradiation, ohmic heating and Pulse Electric Field) treatments to control Alicyclobacillus growth in order to ensure the quality and the extended shelf life of fruit juices.