Category Archives: Microbiology

Research – Bacteria Broadly-Resistant to Last Resort Antibiotics Detected in Commercial Chicken Farms


Resistance to last resort antibiotics in bacteria is an emerging threat to human and animal health. It is important to identify the source of these antimicrobial resistant (AMR) bacteria that are resistant to clinically important antibiotics and evaluate their potential transfer among bacteria. The objectives of this study were to (i) detect bacteria resistant to colistin, carbapenems, and β-lactams in commercial poultry farms, (ii) characterize phylogenetic and virulence markers of E. coli isolates to potentiate virulence risk, and (iii) assess potential transfer of AMR from these isolates via conjugation. Ceca contents from laying hens from conventional cage (CC) and cage-free (CF) farms at three maturity stages were randomly sampled and screened for extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae, carbapenem-resistant Acinetobacter (CRA), and colistin resistant Escherichia coli (CRE) using CHROMagar™ selective media. We found a wide-spread abundance of CRE in both CC and CF hens across all three maturity stages. Extraintestinal pathogenic Escherichia coli phylogenetic groups B2 and D, as well as plasmidic virulence markers iss and iutA, were widely associated with AMR E. coli isolates. ESBL-producing Enterobacteriaceae were uniquely detected in the early lay period of both CC and CF, while multidrug resistant (MDR) Acinetobacter were found in peak and late lay periods of both CC and CF. CRA was detected in CF hens only. blaCMY was detected in ESBL-producing E. coli in CC and CF and MDR Acinetobacter spp. in CC. Finally, the blaCMY was shown to be transferrable via an IncK/B plasmid in CC. The presence of MDR to the last-resort antibiotics that are transferable between bacteria in food-producing animals is alarming and warrants studies to develop strategies for their mitigation in the environment. View Full-Text

Research – NIH scientists study salmonella swimming behavior as clues to infection



Salmonella enterica serovar Typhimurium bacteria (S. Typhimurium) commonly cause human gastroenteritis, inflammation of the lining of the intestines. The bacteria live inside the gut and can infect the epithelial cells that line its surface. Many studies have shown that Salmonella use a “run-and-tumble” method of short swimming periods (runs) punctuated by tumbles when they randomly change direction, but how they move within the gut is not well understood.

National Institutes of Health scientists and their colleagues believe they have identified a S. Typhimurium protein, McpC (Methyl-accepting chemotaxis protein C), that allows the bacteria to swim straight when they are ready to infect cells. This new study, published in Nature Communications, describes S. Typhimurium movement and shows that McpC is required for the bacteria to invade surface epithelial cells in the gut.

The study authors suggest that McpC is a potential target for developing new antibacterial treatments to hinder the ability of S. Typhimurium to infect intestinal epithelial cells and colonize the gut. National Institute of Allergy and Infectious Diseases scientists at Rocky Mountain Laboratories in Hamilton, Montana, led the study. Collaborators included groups from the University of Texas A&M campuses in College Station and Kingsville.

RASFF Alerts – Listeria monocytogenes – Blanched maize Kernels – Swett Chilli Chicken Wraps – Chilled Cheese

European Food Alerts


Listeria monocytogenes (present /25g) in frozen blanched sweet maize kernels from Hungary in Switzerland


Listeria monocytogenes (in 2 out of 5 samples /25g) in chilled sweet chilli chicken wraps from the Netherlands in the Netherlands


Listeria monocytogenes (<10 CFU/g) in chilled cheese from the Netherlands in France

RASFF Alert – Hepatitis A – Dried Tomato’s

European Food Alerts


hepatitis A virus (presence /25g) in dried tomatoes from Turkey in Greece

RASFF Alerts – Salmonella – Anything to do with Chicken from Poland – Black Pepper – Paprika Powder – Chilled beef Merguez Sausages

European Food Alerts


Salmonella enterica ser. Münster (presence /25g) in paprika powder from China in Spain


Salmonella (presence /25g) in pepper from Brazil in Spain


Salmonella enterica ser. Newport (presence /25g) in frozen chicken elements from Poland in Poland


Salmonella enterica ser. Enteritidis (presence /25g) in chilled chicken elements from Poland in Poland


Salmonella enterica ser. Mbandaka (presence /150g) in egg yolk powder from Poland in Sweden


Salmonella enterica ser. Enteritidis (presence /25g) in frozen chicken legs from Poland in France


Salmonella (present /25g) in black pepper from Brazil in the Netherlands


Salmonella (present /10g) in chilled beef merguez sausages from Belgium in Belgium


Salmonella enterica ser. Infantis (presence /25g) in frozen chicken breast fillets from Poland in Estonia


Salmonella group C (presence /25g) in chilled chicken broiler thighs and breast steaks from Poland in Lithuania

RASFF Alerts – Animal Feed – Enterobacteriaceae – Dog Chews

European Food Alerts


high count of Enterobacteriaceae (1300 CFU/g) in dog chews from China in Sweden

RASFF Alerts – Animal Feed – Salmonella – Dog Chews – Rapeseed Cake – Sunflower Husk Pelletes

European Food Alerts


Salmonella enterica ser. Typhimurium (presence /25g) in dog chews from Germany in Austria


Salmonella enterica ser. Agona (present /25g) in rapeseed cake from Belgium in Belgium


Salmonella (present /25g) in sunflower husk pellets from Estonia in Germany

Canada – Harvest brand Polish Sausages may be unsafe due to undercooking


Recall details

Ottawa, January 14, 2021 – Harvest Meats is recalling Harvest brand Polish Sausages from the marketplace due to undercooking. Consumers should not consume the recalled product described below.

Recalled product

Brand Product Size UPC Codes
Harvest Polish Sausages 675 g 0 57393 70017 8 BEST BEFORE 2021MR15

What you should do

Check to see if you have the recalled product in your home. Recalled products should be thrown out or returned to the store where they were purchased.

Undercooked food may contain bacterial pathogens which can make you sick.


This recall was triggered by the company. The Canadian Food Inspection Agency (CFIA) is conducting a food safety investigation, which may lead to the recall of other products. If other high-risk products are recalled, the CFIA will notify the public through updated Food Recall Warnings.

The CFIA is verifying that industry is removing the recalled product from the marketplace.


There have been no reported illnesses associated with the consumption of this product.

Product photos

Printer ready version of photos

  • Harvest – Polish Sausages – 675 grams (front)
  • Harvest – Polish Sausages – 675 grams (back)

Public enquiries and media

Company information
Harvest Meats: 1-800-667-1496 ext. 358
Public enquiries
Toll-free: 1-800-442-2342 (Canada and U.S.)
Telephone: 1-613-773-2342 (local or international)
Media relations
Telephone: 613-773-6600

Ireland – Recall of Tesco Finest Taleggio PDO Italian Cheese Due to the Presence of Listeria monocytogenes


Category 1: For Action
Alert Notification: 2021.05
Product: Tesco Finest Taleggio PDO Italian Cheese; pack size: 200 g
Batch Code: Use-by date: 25.01.2021
Country Of Origin: Italy


Tesco Ireland is recalling Tesco Finest Taleggio PDO Italian Cheese with the use by date of 25th January 2021, due to the detection of Listeria monocytogenes. Point-of-sale recall notices will be displayed in all Tesco stores.

Nature Of Danger:

Symptoms of Listeria monocytogenes infection can include vomiting, nausea, persistent fever, muscle aches, severe headache and neck stiffness.  In rare cases, the infection can be more severe, causing serious complications. Some people are more vulnerable to Listeria monocytogenes infections, including pregnant women, babies, and people with weakened immune systems, including the elderly.  The incubation period (time between initial infection and first symptoms appearing) is on average 3 weeks but can range between 3 and 70 days.

Action Required:


Consumers are advised not to eat the implicated batch.


UK – Tesco recalls Tesco Finest Taleggio because of contamination with Listeria monocytogenes


Tesco is recalling Tesco Finest Taleggio 200g because it contains Listeria monocytogenes.

Product details

Tesco Finest Taleggio
Pack size 200g
Batch code all
Use by 25 January 2021

Risk statement

The presence of Listeria monocytogenes in the product listed above.

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

Tesco is recalling the above product. Product recall notices will be issued to explain to customers why the product is being recalled and tell them what to do if they have bought the product. Please see attached notice.

Our advice to consumers

If you have bought the above product do not eat it. Instead, return it to the store from where it was bought for a full refund.

About product recalls and withdrawals

If there is a problem with a food product that means it should not be sold, then it might be ‘withdrawn’ (taken off the shelves) or ‘recalled’ (when customers are asked to return the product). The FSA issues Product Withdrawal Information Notices and Product Recall Information Notices to let consumers and local authorities know about problems associated with food. In some cases, a ‘Food Alert for Action’ is issued. This provides local authorities with details of specific action to be taken on behalf of consumers.

Ref: FSA-PRIN-02-2021