Category Archives: Microbiology

France – Countrywide multi-serotype outbreak of Salmonella Bovismorbificans ST142 and monophasic Salmonella Typhimurium ST34 associated with dried pork sausages in France, September 2020* to January 2021

Sante Publique

The French National Reference Centre for Escherichia coli, Shigella and Salmonella (FNRC-ESS) detected two human clusters of 33 cases (median age: 10years; 17 females) infected by Salmonella enterica serotype Bovismorbificans, ST142, HC5_243255 (EnteroBase HierCC cgMLST scheme) in September-November 2020 and of 11 cases (median age: 11years; seven males) infected by S.enterica serotype 4,12:i:-, ST34, HC5_198125 in October-December 2020.

Epidemiological investigations conducted by Santé publique France linked these outbreaks to the consumption of dried pork sausages from the same manufacturer. S.Bovismorbificans and S.?4,12:i:- were isolated by the National Reference Laboratory from different food samples, but both strains were identified in a single food sample only by qPCR.

Three recalls and withdrawals of dried pork products were issued by the French general directorate of food of the French ministry for agriculture and food in November 2020, affecting eight supermarket chains. A notification on the European Rapid Alert System for Food and Feed and a European urgent enquiry on the Epidemic Intelligence Information System for Food and Waterborne Diseases and Zoonoses (EPIS-FWD) were launched. No cases were reported outside France. Outbreaks caused by multiple serotypes of Salmonella may go undetected by protocols in standard procedures in microbiology laboratories.

RASFF Alerts – Animal Feed – Salmonella – Fishmeal – Pigs Ear Dog Chews – Soya Cake – Permeate Powder – Post Extraction Sunflower Meal – Poultry Feed

RASFF

Salmonella in fishmeal from Germany in Belgium

RASFF

Salmonella in pig’s ears for dog chew in Sweden and Norway

RASFF

Salmonella in organic soya cake from Denmark in Sweden

RASFF

Salmonella in Permeate powder from the Netherlands in Belgium

RASFF

Salmonella in post-extraction sunflower meal from Ukraine in Poland

RASFF

Salmonella Typhimurium in feed for poultry from Belgium in France and Guinea

Canada – CFIA suspends the Safe Food for Canadians licence of Le Fromage au Village Inc – Listeria

CFIA

The Canadian Food Inspection Agency (CFIA) suspended the Safe Food for Canadians (SFC) licence #9DM4P9DP of Le Fromage au Village Inc., located in Lorrainville, Quebec, on January 20, 2023.

While the suspension is in effect, the licence holder may not conduct any activity for which SFC licence #9DM4P9DP was issued.

The CFIA suspended the license on grounds that a risk of injury to human health may result if the licence holder continues to conduct an activity identified in the licence, notably because of the absence of adequate corrective measures to prevent the risk of Listeria monocytogenes contamination.

There are food recalls associated to this suspension and there have been reported illnesses that may be associated with the consumption of these products. The Agency is continuing its food safety investigation, which may result in the recall of additional products.

Licence holders are responsible for ensuring that they comply with Canada’s food laws. The CFIA is responsible for enforcing those laws.

The licence suspension will be lifted if the CFIA determines that corrective measures have been taken by the licence holder. If corrective action is not taken within 90 days after suspension, the CFIA may cancel the licence. The CFIA may also cancel the licence on other grounds set out in section 39 of the Safe Food for Canadians Regulations. Cancellation may occur after the licence holder has been notified of the grounds for cancellation and provided with an opportunity to be heard.

Safe Food for Canadians licences can be suspended:

  • for failure to comply with the Safe Food for Canadians Act, the Food and Drugs Act and their related regulations;
  • for default of payment of any fee related to the licence; and
  • if risk of injury to human health may result from continuing to conduct the licensed activity.

The CFIA publishes licence suspensions and cancellations on its website.

USA – FDA Core Investigation Table Updates

FDA

Date
Posted
Reference
#
Pathogen
or
Cause of
Illness
Product(s)
Linked to
Illnesses

(if any)
Total
Case
Count
Investigation
Status
12/28/2022 1137 Salmonella
Typhimurium
Alfalfa Sprouts See
Outbreak
Advisory
Active
11/9/2022 1127 Listeria
monocytogenes
Enoki
Mushrooms
See
Outbreak
Advisory
Active

Research – Exploring Possible Ways to Enhance the Potential and Use of Natural Products through Nanotechnology in the Battle against Biofilms of Foodborne Bacterial Pathogens

MDPI

Abstract

Biofilms enable pathogenic bacteria to survive in unfavorable environments. As biofilm-forming pathogens can cause rapid food spoilage and recurrent infections in humans, especially their presence in the food industry is problematic. Using chemical disinfectants in the food industry to prevent biofilm formation raises serious health concerns. Further, the ability of biofilm-forming bacterial pathogens to tolerate disinfection procedures questions the traditional treatment methods. Thus, there is a dire need for alternative treatment options targeting bacterial pathogens, especially biofilms. As clean-label products without carcinogenic and hazardous potential, natural compounds with growth and biofilm-inhibiting and biofilm-eradicating potentials have gained popularity as natural preservatives in the food industry. However, the use of these natural preservatives in the food industry is restricted by their poor availability, stability during food processing and storage. Also there is a lack of standardization, and unattractive organoleptic qualities. Nanotechnology is one way to get around these limitations and as well as the use of underutilized bioactives. The use of nanotechnology has several advantages including traversing the biofilm matrix, targeted drug delivery, controlled release, and enhanced bioavailability, bioactivity, and stability. The nanoparticles used in fabricating or encapsulating natural products are considered as an appealing antibiofilm strategy since the nanoparticles enhance the activity of the natural products against biofilms of foodborne bacterial pathogens. Hence, this literature review is intended to provide a comprehensive analysis of the current methods in nanotechnology used for natural products delivery (biofabrication, encapsulation, and nanoemulsion) and also discuss the different promising strategies employed in the recent and past to enhance the inhibition and eradication of foodborne bacterial biofilms.

Research – Microbial Dynamics in Mixed-Culture Biofilms of Salmonella Typhimurium and Escherichia coli O157:H7 and Bacteria Surviving Sanitation of Conveyor Belts of Meat Processing Plants

MDPI

Abstract

Biofilm formation can lead to the persistence of Salmonella Typhimurium (ST) and E. coli O157:H7 (O157). This study investigated the impact of meat processing surface bacteria (MPB) on biofilm formation by O157 (non-biofilm former; NF) and ST (strong biofilm former; BF). MPB were recovered from the contacting surfaces (CS), non-contacting surfaces (NCS), and roller surfaces (RS) of a beef plant conveyor belt after sanitation. O157 and ST were co-inoculated with MPB (CO), or after a delay of 48 h (IS), into biofilm reactors containing stainless steel coupons and incubated at 15 °C for up to 144 h. Coupons were withdrawn at various intervals and analyzed by conventional plating and 16S rRNA gene amplicon sequencing. The total bacterial counts in biofilms reached approximately 6.5 log CFU/cm2, regardless of MPB type or development mode. The mean counts for O157 and ST under equivalent conditions mostly did not differ (p > 0.05), except for the IS set at 50 h, where no O157 was recovered. O157 and ST were 1.6 ± 2.1% and 4.7 ± 5.0% (CO) and 1.1 ± 2.2% and 2.0 ± 2.8% (IS) of the final population. Pseudomonas dominated the MPB inocula and biofilms, regardless of MPB type or development mode. Whether or not a pathogen is deemed BF or NF in monoculture, its successful integration into complex multi-species biofilms ultimately depends on the presence of certain other residents within the biofilm.

Research – Prevalence of Foodborne Viruses in Berries Harvested in Canada

MDPI

Abstract

It is known that the transmission of different foodborne viruses can occur either via discharge of contaminated water close to the production environment or via close contact with animal feces. Cranberries are intimately associated with water throughout their production cycle, and blueberries grow close to the ground which could lead to contact with wildlife. The aim of this study was to evaluate the prevalence of human norovirus (HuNoV GI and GII), hepatitis A virus (HAV) and hepatitis E virus (HEV) in two berries produced commercially in Canada. The detection of HuNoV and HAV on RTE cranberries and of HEV on wild blueberries was evaluated using the ISO method 15216-1:2017. Only 3 of 234 cranberry samples tested positive for HuNoV GI (3.6, 7.4, 5.3 genome copies/g, respectively) and all were negative for HuNoV GII and HAV. PMA pre-treatment and sequencing confirmed the absence of potential intact HuNoV GI particles on cranberries. None of the 150 blueberry samples tested positive for HEV. Overall, the prevalence of foodborne viruses in RTE cranberries and wild blueberries harvested in Canada is low, making these products relatively safe for consumers.

USA – J.M. Smucker LLC – FDA Warning Letter

FDA

January 24, 2023

WARNING LETTER 638042

Dear Mr. Smucker:

The U.S. Food and Drug Administration (FDA) and the Kentucky Cabinet for Health and Family Services Food Safety Branch (CHFS-FSB) jointly inspected your manufacturing facility located at 767 Winchester Road, Lexington, KY 40505-3728 from May 19, 2022, through June 9, 2022. The inspection was initiated as part of a multistate foodborne outbreak investigation of Salmonella Senftenberg (S. Senftenberg) illnesses linked to your ready-to-eat (RTE) peanut butter. According to the Centers for Disease Control and Prevention (CDC), 21 people from 17 states were infected with the outbreak strain of S. Senftenberg. On May 20, 2022, your firm recalled all peanut butter manufactured at this facility from October 1, 2021, to May 20, 2022, due to potential contamination with Salmonella.

CDC and FDA have determined, based upon the epidemiologic, laboratory, and traceback evidence, that peanut butter manufactured at your facility was the source of this multistate S. Senftenberg outbreak. Further, the evidence establishes that you introduced adulterated peanut butter into interstate commerce as prohibited by section 301(a) of the Federal Food, Drug, and Cosmetic Act (the Act) [21 U.S.C. § 331(a)].

India – Over 100 Students Fall Sick Due To Suspected Food Poisoning In Karnataka

NDTV

Mangaluru: 

At least 137 nursing and paramedical students fell ill due to suspected food poisoning at a private hostel in Mangaluru’s Shaktinagar on Monday.

The students were rushed to various private hospitals in the city at night.

The students had developed stomach ache, vomiting and diarrhoea since 2 am on Monday.

City police commissioner N Shashi Kumar said that the police are trying to find the reason behind the incident.

“At about 9 pm, around 400-500 people gathered in front of city hospital in the city. Most of them are students and the rest are their family members. Since morning 2 am more than 100 girl students have complained of food poisoning and hospitalised. 137 students were admitted to different hospitals in the city. We are trying to find out the reason,” Shashi Kumar said.

Research – Tackle Foodborne Illness When Ordering Takeout or Delivered Foods

FSIS USDA

The Super Bowl is the biggest and most anticipated sporting event of the year. Friends and families “huddle” and consume foods and snacks for the duration of the game while cheering for their favorite team. This iconic annual event is often celebrated by ordering takeout and delivered foods, which if left out too long, can cause foodborne illness.

Leaving food out at room temperature is a big food safety penalty. Bacteria that can cause foodborne illness will start to grow to dangerous levels in the range of temperatures between 40 F and 140 F when left out for over two hours or one hour if above 90 F. This range of temperatures is called the Danger Zone.

To avoid foodborne illness during the big game, follow this game plan:

  • Keep cold foods cold and hot foods hot. Cold foods should be kept under 40 F on the buffet table by nesting serving dishes of food in bowls of ice. Hot foods should be kept above 140 F. A preheated oven, chafing dishes, preheated warming trays or slow cookers can be used to keep food hot.
  • Don’t serve all food at once. Use small platters and replace them often with fresh refrigerated platters of food, rather than adding fresh food to a serving dish already on the table. Hot foods should be reheated to 165 F as measured with a food thermometer. When reheating in the microwave, cover the food for even heating. Check the temperature of the food in several places with a food thermometer, as some microwaved foods can have cold spots.

For more information, call the USDA Meat and Poultry Hotline at 1-888-MPHotline (1-888-674-6854) or email MPHotline@usda.gov to reach a food safety expert or chat live at ask.usda.gov from 10 a.m. to 6 p.m. Eastern Time, Monday through Friday.