Research – Listeria in Pregnancy—The Forgotten Culprit

MDPI

Listeria monocytogenes is a Gram-positive bacterium that causes listeriosis, a severe foodborne illness that is particularly dangerous during pregnancy. It thrives in diverse environments, including refrigerated conditions and food production facilities, due to its adaptability to varying temperatures, pH levels, and salt concentrations. Its virulence stems from the ability to invade host cells, particularly macrophages and epithelial cells, and avoid, or at least postpone, immune detection by utilizing virulence factors such as internalins, listeriolysin O, and actin assembly-inducing protein. This intracellular motility and biofilm formation make LM a persistent pathogen in food safety and public health. Pregnant women are at a much higher risk of listeriosis, which can result in serious fetal complications such as miscarriage, stillbirth, and preterm labor due to LM’s affinity for placental tissues. The vertical transmission of LM from mother to fetus can lead to neonatal listeriosis, which can result in sepsis and meningitis, with high mortality rates if not promptly treated. Early diagnosis and treatment with antibiotics, such as ampicillin or gentamicin, are crucial for maternal and neonatal outcomes.

Research – Is it possible to reduce foodborne Campylobacter infections in humans through vaccination of animals?

Science Direct

Vaccination has been used successfully over the years to eradicate many serious diseases, but what about human foodborne pathogens, such as Campylobacter? Most human cases of Campylobacter infection are associated with consumption of poultry products. Vaccination of poultry to prevent early colonization or to reduce the Campylobacter colonization level may be a viable intervention strategy in the future; however, no commercial Campylobacter vaccine is currently available.

Research – Impact of Various Washing Protocols on the Mitigation of Escherichia coli Contamination in Raw Salad Vegetables

MDPI

Vegetables are an essential component of a balanced diet. The consumption of ready-to-eat foods may lead to the risk of infections and illnesses due to microbial contamination. To mitigate the potential of microbial contamination risks, it is critical to promote safe handling practices among consumers. In this study, our research evaluated the efficacy of different vegetable washing methods, specifically with lettuce, tomato, and cucumber, to establish optimal practices for reducing microbial contamination. This study consisted of two phases. Initially, a survey was distributed to 150 volunteers using snowball sampling to assess everyday vegetable handling and washing methods. The survey’s results identified four predominant methods: washing with a 5% vinegar solution for 3 min followed by tap water rinse (37.3% of participants), rinsing with tap water for 1 min (29.3%), washing with a 5% salt solution (vegetable soap) for 3 min followed by a tap water rinse (16.6%), and a 3 min tap water rinse (14%). A minor segment (3.33%) reported not washing their vegetables at all. The survey’s findings guided the second phase, which tested the aforementioned washing protocols’ effectiveness in reducing Escherichia coli (E. coli) levels on spiked contaminated salad vegetables. The tested vegetables were sterilized using UV light, inoculated with 0.5 McFarland E. coli, and then washed using the four identified methods. After that, E. coli enumeration after washing was performed using 3M™ Petrifilm and the comparison was analyzed via one-way ANOVA. During this study, it was revealed that the cucumbers had the highest E. coli contamination levels in comparison to the lettuce and tomato after washing. Interestingly, by comparing the three washing methods, it was found that washing the vegetables with vinegar proved to be the most effective solution for reducing microbial presence on both lettuce and cucumbers. Notably, the natural smoothness of tomato skin led to no significant differences in contamination levels across washing methods. In summary, vinegar washing effectively reduces microbial contamination from salad vegetables, highlighting the need for informed consumer practices to prevent foodborne outbreaks. This study emphasizes the importance of monitoring contamination sources and using safe washing techniques.

Research – E. coli in Food

MAST

In light of the news of the last few days, the Swedish Food Agency considers it appropriate to emphasize several points regarding the handling of food, especially with E. coli in mind.

What is E. coli ?

There are many types of coliform bacteria. They are found in the intestines of humans and animals. Some species can produce toxins and thus cause serious diseases in people, especially children, the elderly and other vulnerable individuals. These toxin-producing E. coli bacteria are called STEC (Shiga Toxin-producing Escherichia Coli ) and can cause serious illness in some cases.

Foodborne infections due to E. coli

The bacteria can get into meat during slaughter, if the contents of the animal’s intestines come into contact with the meat. Preventive measures that reduce the chance of meat becoming contaminated are therefore important, such as clean tools and hygiene during slaughter. The bacteria can also get into vegetables, fruits and other things that are grown in close contact with soil, organic waste or water that is contaminated with feces.

People can become infected with E. coli , through contaminated food (tdhakki and vegetables) or water, through direct contact with animals or environments contaminated with their feces. The bacterium thus gets through the mouth and down into the digestive tract.

It is common practice that beef, lamb and horse steaks are served without being deep-fried. On raw pieces of meat, bacteria are on the outer layer of the meat and not inside the muscle. They are therefore killed when the meat is fried or grilled at high temperatures. Everything else applies to hamburgers and other dishes made from minced meat. When meat is minced, microorganisms spread throughout the meat. Light frying therefore does not kill bacteria present in the meat. In order to kill E. coli and other disease-causing microorganisms, the hamburgers and other mincemeat dishes must be fried through or so that the core temperature is at least 75°C.

What can consumers do to avoid infection?

  • Fully fry round hamburgers and other minced meat
  • Maintain kitchen hygiene when handling raw and minced meat
  • Avoid cross contamination by keeping meat separate from other foods, especially from those that should not be cooked such as salad
  • Rinse all vegetables in clean water
  • Wash cutting boards, utensils, knives and the surrounding area after handling raw meat to prevent the transfer of bacteria to foods that are not to be heated
  • Do not wipe up blood with a cloth used on other surfaces, use paper towels instead
  • Good hand washing with soap and water after using the toilet, before handling food and after handling raw meat is an important rule to prevent infection
  • Prevent blood from leaking from meat in the fridge
  • Avoid consumption of unpasteurized dairy products

Belgium -Chicken fillet from the VOLAE brand – Salmonella

AFSCA

Chicken fillet - VOLAE

Intermarché is withdrawing from sale the “Chicken Filet” fillets (x6) of the VOLAE brand due to the possible presence of Salmonella Typhimurium.

Product:
Product name: Chicken fillet
Brand: VOLAE
Use-by date: 10/27/2024
EAN: 3250390314769
Weight: +/-820g

The products were marketed in Intermarché & Intermarché by Mestdagh points of sale between October 18 and October 24, 2024.

Please do not consume this product and return it to this store where you will be refunded.

Salmonella can cause diarrhea, abdominal pain or vomiting, with or without fever, in the days following the consumption of contaminated products.
People who have consumed the product mentioned above and who present these types of symptoms are invited to consult their doctor without delay, informing them of this consumption as well as the place and date of purchase.

For any questions , you can write to the address:
itmai_be_recall@mousquetaires.com

We apologize for any inconvenience caused.
Management

Catalan – Possible presence of Listeria monocytogenes in cooked hands and precooked pork feet

ACSA

cooked pork hands from the alert

"BONPREU" brand pre-cooked pork feet

The possible presence of Listeria monocytogenes in cooked pork hands from the “El Mercado de ALDI” brand and in pre-cooked pork feet from the “BONPREU” brand from Catalonia is reported.

The data of the products involved are:

  • Product name:  Cooked pork knuckles
  • Brand:  El mercado de ALDI
  • Product appearance:  vacuum packed
  • Batch number:  249
  • Expiry date: 14/11/2024
  • Unit weight:  700g
  • Temperature:  Frozen
  • Product name:  Precooked pork feet
  • Brand:  BONPREU
  • Product appearance: vacuum packed
  • Batch number:  136
  • EAN code: 8422410416967
  • Expiry date or best before date:  1/11/2024
  • Unit weight:  700g
  • Temperature:  Frozen

The company itself has detected this incident as part of its self-controls and has communicated it to its customers and the competent authorities, in compliance with the legislation and in order not to make unsafe food available to the population.

According to the information available, the initial distribution of the pre-cooked pork feet of the “BONPREU” brand was in the autonomous communities of Catalonia and Aragon, and of the lightly pre-cooked hands of the “El Mercado de ALDI” brand in Catalonia, although it cannot be ruled out that there may be redistributions to other autonomous communities.

The Public Health Agency of Catalonia has communicated this information to the Spanish Food Safety and Nutrition Agency through the  European Food Alert Network .

The market withdrawal of the affected product from the marketing channels is being monitored by the competent authorities.

If you have consumed any of the products from the affected batch and present symptoms compatible with listeriosis (vomiting, diarrhea or fever) it is recommended to go to a health center. 

France – FRESH FREE RANGE EGGS – Salmonella

Gov France

Product Category
Food
Product subcategory
Eggs and egg products
Product brand name
ORIGINAL CROSSROADS
Model names or references
FRESH FREE RANGE EGGS x 6 FRESH FREE RANGE EGGS x 12
Product identification
GTIN Batch Date
3270190205678 132428102 Recommended consumption date 10/31/2024
3270190205685 132427604 Recommended consumption date 10/24/2024
3270190205685 132427605 Recommended consumption date 10/26/2024
3270190205685 132427703 Recommended consumption date 10/27/2024
3270190205685 132427905 Recommended consumption date 10/29/2024
3270190205685 132428102 Recommended consumption date 10/31/2024
3270190205685 132428302 Recommended consumption date 10/31/2024
Packaging
Boxes of 6 eggs / boxes of 12 eggs
Start/End of marketing date
From 06/09/2024 to 10/10/2024
Storage temperature
Product to be stored at room temperature
Health mark
FR 79.201.001 CE
Additional information
Supplier name: OVALIS – health stamp: FR 79.201.001 CE
Geographic area of ​​sale
Whole France
Distributors
CROSSROADS

France – Grey Tome – Listeria monocytogenes

Gov France

Product Category
Food
Product subcategory
Milk and dairy products
Product brand name
Milledome
Model names or references
Package of 2
Product identification
GTIN Batch
3376963684760 0000240
Start/End of marketing date
From 10/21/2024 to 12/15/2024
Storage temperature
Product to be kept in the refrigerator
Additional information
The weight is indicative because it is a variable weight. As well as the DDM which can vary
Geographic area of ​​sale
Whole France
Distributors
Sysco + Transgourmet + Pro to Pro + Metro
List of points of sale
Traça_lot_240.pdf

France – Grey Tome – Listeria monocytogenes

Gov France

Product Category
Food
Product subcategory
Milk and dairy products
Product brand name
Livradois
Model names or references
Package of 4
Product identification
GTIN Batch
3376963015137 0000240
Start/End of marketing date
From 10/21/2024 to 12/10/2024
Storage temperature
Product to be kept in the refrigerator
Additional information
The marked weight is indicative because it is a variable weight. The same goes for the BBD
Geographic area of ​​sale
Whole France
Distributors
Pro to Pro + Sysco + Transgourmet + Metro
List of points of sale
Traça_lot_240.pdf

France- Caen-style tripe – Listeria monocytogenes

Gov France

Product Category
Food
Product subcategory
Meats
Product brand name
Leclerc Trie-Château
Model names or references
Caen-style tripe
Product identification
GTIN
0251156000000
Packaging
Sale in the traditional department
Start/End of marketing date
From 10/18/2024 to 10/21/2024
Storage temperature
Product to be kept in the refrigerator
Geographic area of ​​sale
Whole France
Distributors
Leclerc Trie-Château