Category Archives: Microbiology Investigations

Research – EU and UK record travel-related Shigella infections

Food Safety News

A multi-country Shigella outbreak in Europe has been linked to stays at some hotels in Cape Verde.

Confirmed Shigella sonnei cases have been reported in the Netherlands, Denmark, France, Germany, Portugal, and the United Kingdom.

The European Centre for Disease Prevention and Control (ECDC) said there is no information about the source of infection but given the increase in travel during the coming holiday season, new cases are likely.

However, Holiday Claims Bureau and Hudgell Solicitors in the UK have noted complaints of illness and poor hygiene standards from holidaymakers, suggesting the source could be contaminated food or water. Holiday Claims Bureau said it had been informed of sick people testing positive for Shigella.

Travelers have described symptoms such as diarrhea, vomiting, stomach cramps, and pains, which in some cases lasted until they returned home.

Anne ThomsonHudgell Solicitors’ travel litigation executive, said people can suffer as a result of a change in diet and climate.

“However, when we are alerted to situations where a number of holiday guests are affected by similar symptoms, particularly when they are not part of the same traveling group, we feel an investigation is needed to contain any wider outbreak and prevent future problems,” she said.

“Holidaymakers becoming ill having only ever eaten at the specific hotel they are staying at, and concerns raised by guests over standards of hygiene and cleanliness throughout premises, and not just in dining areas, are often red flags to potential underlying problems.”

Do You Know How to Use a Food Thermometer?

Food Poisoning Bulletin

With the holidays approaching, it’s important to keep food safety in mind. One of the best ways to ensure that the food you make and serve is safe to eat it to use a food thermometer. But do you know how to use a food thermometer correctly?

First, you should know that there are several types of food thermometers. The most inexpensive and common is a dial thermometer. This has a dial on a stem that is attached to a probe. You can find these thermometers are most grocery stores. This thermometer is not always the most accurate, but it will give you a general reading.

The second type is an oven-proof thermometer that you use while the food is cooking.  A probe goes into the meat roast or whole chicken or turkey, then a cord extends outside the oven to the dial that shows the reading. These can be digital or dial thermometers. You remove the food from the oven when it reaches the safe final internal temperature (or 5°F below that temperature with a 5-minute covered stand time).

Candy thermometers have larger temperature ranges, since the sugar solutions are often cooked to 300°F. These utensils look like a ruler, with a bulb at the bottom. They clip onto the side of a saucepan. To use when making candy or syrups, make sure that the bulb is in the sugar syrup but not touching the bottom of the saucepan.

Finally, instant-read digital thermometers consist of a probe that is attached to a plastic body and folds out. The digital reading is the most accurate, but these utensils can be expensive. You should know that the thermometer will usually time out after a few minutes. To restart it, just clip the probe back into the body and open it up again.

Read more at the link above.

Quebec – Notice not to consume various fish products in oil with fresh vegetables, prepared and sold by Kliens Grocery – Food Safety

Quebec

QUEBEC CITY , Nov. 14, 2022 /CNW Telbec/ – The Ministry of Agriculture, Fisheries and Food (MAPAQ), in collaboration with the Food Inspection Division of the City of Montreal and the company Kliens Grocery, located at 5573, avenue du Parc, in Montreal, advises the public not to consume the products indicated in the table below, because they have not been prepared and packaged in such a way as to ensure their safety.

Product name

Format

Affected lot

“CURED MATYASH HERRING”

Variable

Units sold until November 10, 2022

“JALAPENO LOX HERRING”

“LOX HERRING”

“ONEG SHABBOS HERRRING”

“MATYASH HERRING REG”

“ENGLISH MATYASH JALAPENO”

Variable

Units sold until November 10, 2022

“ENGLISH SHMALTZ SALAD”

“SHMALTZ HERRING JALAPENO”

“SHMALTZ HERRING RAINBOW”

“SHABBOS MIX”

The products that are the subject of this warning were offered for sale until November 10, 2022, and this, only at the establishment designated above. The products were packaged in transparent plastic trays and sold chilled. The label of the products included their name. 

The operator is voluntarily recalling the products in question. It has agreed with MAPAQ and the Food Inspection Division of the City of Montreal to distribute this warning as a precautionary measure. Also, people who have any of these products in their possession are advised not to consume it. They must return it to the establishment where they bought it or throw it away. Even if the affected products show no signs of tampering or suspicious odors, their consumption may represent a health risk.

It should be noted that no case of illness associated with the consumption of these foods has been reported to MAPAQ to date.

Research – Attribution Analysis of Foodborne Disease Outbreaks Related to Meat and Meat Products in China, 2002–2017

Mary Anne Liebert

Abstract

kswfoodworld

This study aimed to understand the epidemiological characteristics of foodborne disease outbreaks related to meat and meat products in China from 2002 to 2017. Data collected from the National Foodborne Diseases Surveillance System and searched databases were analyzed. From 2002 to 2017, China reported 2815 outbreaks caused by foodborne diseases related to meat and meat products, resulting in 52,122 illnesses and 25,361 hospitalizations, and 96 deaths. Outbreaks were markedly seasonal and concentrated from May to September, accounting for 66.93%. Outbreaks were concentrated mainly in China’s eastern coastal and southern regions. Unidimensional attribution analysis revealed that livestock meat was the most commonly implicated food category causing the outbreaks, accounting for 28.67%. Bacteria were the most common pathogenic cause of outbreaks, accounting for 51.94%. Clostridium botulinum was the most common pathogenic cause of death, accounting for 34.38%. Improper processing was the most common contributing factor, accounting for 27.89%. Households were the most common food preparation location causing the outbreak, accounting for 34.39%. Two-dimensional and multidimensional attribution analysis found that Salmonella contamination occurred in different locations and regions, mainly caused by various contributing factors and improper processing. Nitrite poisoning is caused by improper processing in households in East China. Bacterial causes were the commonest agents associated with foodborne diseases related to meat and meat products, and improving the safety and quality of meat and meat product should be a priority.

USA – Cooper’s Hawk Duval County Cyclospora Outbreak Attributed to Contaminated Basil

Food Poisoning News

The final investigation of the 2019 Cyclospora outbreak in Duval County, Florida found the most likely cause of the Cooper’s Hawk outbreak was serving food containing contaminated fresh basil – ironically, to-date Cooper’s Hawk continues to deny it served contaminated food. The Florida Department of Health of Duval County (DOH-Duval) first announced the potential outbreak on June 22, 2019 after one of Cooper’s Hawks own restaurant managers notified them of an estimated 20 employees who had became sick with gastrointestinal illness beginning on June 18, 2019. After the first report of employee infections, reports of illnesses in customers came pouring in, with a total of 153 gastrointestinal illnesses.

Research – UK food microbiology lab notes less contact with the EU

Food Safety News

The United Kingdom leaving the European Union has resulted in reduced communication between UK and EU food networks, according to a new report.

The annual report covers work of the UK’s national reference laboratory (NRL) for food microbiology between April 2021 and March 2022.

The UK Health Security Agency (UKHSA) provides this service for the Food Standards Agency (FSA) for Listeria monocytogenes, coagulase-positive staphylococci, E. coli, Campylobacter, Salmonella and antimicrobial resistance.

Spain – New information on the presence of Listeria monocytogenes in cooked pork head meat

ACSA

pig's head meat cooked from the alert

In relation to the alert for the presence of Listeria monocytogenes in cooked pork head meat from Spain , the withdrawal is extended to another batch of the same product.

With this new information, the data of the product involved are:

Denomination: Special pig’s head

Brand: FRIAL

Lot: 2238402, with expiration date 12/14/2022.

Batch: 2238403, with expiration date 12/23/2022.

According to the information available, the distribution of the products has been in the Basque Country, Madrid, Castilla-La Mancha, Castilla y León, Extremadura, Cantabria and Galicia, although it is not ruled out that there is distribution to other autonomous communities.

With the information available there is NO record of any reported case associated with this alert.

The Spanish Agency for Food Safety and Nutrition has received this information from the autonomous community of Castilla-La Mancha and has transferred it to the competent authorities of the autonomous communities through the Coordinated System for the Rapid Exchange of Information (SCIRI) in order to that the withdrawal of the affected products from the marketing channels be verified.

As a precautionary measure, it is recommended that people who have the product indicated above in their homes refrain from consuming it and return it to the points of sale.

In the case of having consumed this product from the affected batches and presenting symptoms compatible with listeriosis (fever, headache, vomiting or diarrhea), it is recommended to go to a health center.

Research – Looking at edible insects from a food safety perspective. Challenges and opportunities for the sector

FAO

The release of the pioneering FAO publication,
 
Edible insects. Future prospects for food and feed security in 2013 spurred considerable interest in insect farming . While insects have been part of the normal diets of many cultures in various regions through the centuries, the practice is not widespread in the Western world .
 
However, with growing concerns about the environmental effects of food production, sustainable agriculture is garnering increasing support within our food systems . This has led to an increased interest in using insects as an additional source of nutrition in human food and animal feed, propelling research activities as well as business opportunities worldwide .Until recently edible insects have been collected mainly from the wild but farming insects for human as well as animal consumption is now on the rise .
 
Their high fecundity, high feed conversion efficiency, and rapid growth rates make insects viable and attractive candidates for farming . In addition, they can be reared in small, modular spaces, making it feasible to raise them in rural as well as urban farm settings .The low carbon, water and ecological footprints associated with insect production, as compared to those of other livestock species, make them attractive from an environmental sustainability standpoint . In general, edible insects are a good source of protein, fatty acids, vitamins, and minerals, though the nutritional profile is insect species dependent .
 
This makes them a potential food source for healthy human diets .Insects can also be a nutritionally beneficial and sustainable source of feed for animals . These factors make insects a good prospect to help address food insecurity issues related to a rising global population, without simultaneously harming the environment .

 
 
However, the benefits of this emerging food source must be weighed against all possible challenges: for instance, any food safety issues that could pose health threats to consumers . As with other foods, edible insects can also be associated with a number of food safety hazards .
 
This publication covers some of the major food safety hazards that should be considered, including biological agents (bacterial, viral, fungal, parasitic) as well as chemical contaminants (pesticides, toxic metals, flame retardants) . Safe and successful insect production must include efforts to prevent, detect, identify and mitigate such food safety concerns . Food safety risks can be higher when insects are harvested from the wild and consumed raw .
 
Farming insects under controlled hygienic conditions and implementing sanitary processing techniques should reduce some hazards, such as microbiological contamination .An important area of food safety consideration is the quality and safety of the feed or substrates used for rearing insects . The use of raw materials that are alternative to conventional feed are being explored as potential substrates for mass production of insects .Some of these raw materials include food side streams such as food waste, agricultural by-products or manure from livestock farms .
 
The high nutritional content and low cost of such side streams provide a means to enforce circular economy in the process, in addition to further reducing the environmental footprint and economic costs associated with insect farming . However, as the nutrient content and food safety aspects of reared insects depend on the substrate, further studies and monitoring will be needed to determine the quality and safety of such side streams as well as the insects that are produced .Insects and crustaceans (shrimp, prawns, etc .) belong to the arthropod family . While allergic reactions to shellfish are well-known, the potential allergenic risks associated with consuming edible insects needs further investigation .
 
Individuals already allergic to crustaceans are particularly vulnerable to developing allergic reactions to edible insects, due to allergen cross-reactivity . The immune systems of shellfish-allergic individuals are sensitized to certain proteins from crustaceans .Recognition of similar proteins in insects upon consumption can trigger the immune system to initiate an allergic reaction .
 
In addition to cross-reactivity, there is also a risk associated with developing de-novosensitization to yet unidentified allergens from insects . Research in this area must be broadened to gain a better understanding of this risk .Other challenges facing this emerging sector are also discussed in the publication . These include the general absence of insect-specific regulations governing the production and trade of insects as food and feed, issues related to upscaling the production of insects, and overcoming the negative attitude associated with insect consumption among some consumers .

 

Research – The monitoring program for algal toxins in shellfish 2021

Mattilsynet

In general, less poisonous shells were detected during the covid-19 years 2020 and 2021 than in the three previous years. We cannot determine whether this is due to fewer samples or less blooms of toxic algal plankton.

In 2021, a total of 723 shell samples were taken and analyzed for various toxins; 384 samples from the Norwegian Food Safety Authority’s annual monitoring program (including the Mussel Alert) and 339 samples from the producers’ own control samples. 

The number of samples from the industry was somewhat fewer in 2021 because demand for shells was lower due to covid-19 with closed restaurants and hotels.

On the monitoring of algal toxins in shellfish

The Norwegian coast is monitored throughout the year for marine algal toxins in shells in connection with commercial harvesting and trade in addition to the Mussel Alert.

The shell samples are analyzed for both the fat-soluble toxins DSP (OA group), AZA, YTX and PTX and the water-soluble toxins with the neurotoxin PSP (STX group), and for the amnesia toxin ASP (DA group).

What did we investigate? Mostly mussels, but also some scallops, flat oysters, Pacific oysters, cockles, knife clams, O-clams, carpet clams, sand clams, circle clams, king snails and sea urchins
Time range: 2021
What were we looking for? The algae toxins DSP, YTX, PTX and AZA, PSP and ASP.
What did we find? Around 98 per cent of all submitted mussels were below the limit value for DSP (OA group).

For PSP (STX group) around 95 per cent were below the limit value, while around 99 per cent were below the limit value for ASP.

For the toxin groups YTX, PTX and AZA, all samples were below given limit values.

Mussels: Had the most detections of DSP and PSP above the limit value, but ASP was also detected above the limit value

Scallops : PSP and ASP were detected above the limit value

Flat oysters : PSP was detected above the limit value in Western Norway for a period in April

PSP : As in previous years, was mainly detected in the spring and early summer.

DSP : The detections above the limit value were distributed throughout the year from April to October with a peak in September. This is consistent with previous years where DSP mainly performs in late summer and autumn.

USA – Stay Food Safe this Thanksgiving Holiday

USDA

Keep your stomach full of turkey and free from foodborne illness this Thanksgiving holiday. The U.S. Department of Agriculture (USDA) reminds us all that it’s important to remember the steps to food safety during America’s biggest meal.

“While the four steps to food safety — clean, separate, cook and chill — are important every day and at every meal, they are particularly significant on Thanksgiving,” said USDA Deputy Under Secretary Sandra Eskin. “There will likely be many guests and many delicious dishes at your holiday table, but you don’t want to invite any foodborne pathogens. Follow those four steps — in particular remember to use a food thermometer — and your Thanksgiving dinner will be a safe one.”

Keep your Thanksgiving celebration food safe by following the tips below.

Clean and Sanitize

Handwashing is the first step to avoiding foodborne illness. Wash your hands for at least 20 seconds with soap and water before, during, and after handling food. In a recent study, 97 percent of participants in a USDA test kitchen failed to wash their hands properly. Make sure to follow these handwashing steps:

  • Wet your hands with clean, running water.
  • Lather your fingers with soap.
  • Scrub soapy hands and fingers thoroughly for at least 20 seconds. Rinse your hands under clean, running water.
  • Dry hands off with a clean towel or air dry them.

Clean and sanitize any surfaces that have touched raw turkey and its juices and will later touch food such as kitchen counters, sinks, stoves, tabletops, etc.

Avoid Cross-Contamination

Cross-contamination is the spread of bacteria from raw meat and poultry onto ready-to-eat food, surfaces, and utensils. One way to avoid this is by using separate cutting boards — one for raw meat and poultry, and another for fruits and vegetables. Our recent study found that sinks are the most contaminated areas of the kitchen. USDA recommends against washing your raw poultry due to the risk of splashing bacteria throughout your kitchen. Clean and sanitize any areas that will come into contact with the turkey before and after cooking.

Thaw the Turkey Safely

Never thaw your turkey in hot water or leave it on a countertop. There are three ways to safely thaw a turkey: in the refrigerator, in cold water and in the microwave.

  • Refrigerator thawing: Turkey can be safely thawed in a refrigerator to allow for slow and safe thawing. When thawing in a refrigerator, allow roughly 24 hours for every four to five pounds of turkey. After thawing, a turkey is safe in a refrigerator for one to two days.
  • Cold water thawing: The cold water thawing method will thaw your turkey faster but will require more attention. When thawing in a cold-water bath, allow 30 minutes per pound and submerge the turkey in its original wrapping to avoid cross-contamination. Change the water every 30 minutes until the turkey is thawed. The turkey must be cooked immediately after thawing.
  • Microwave thawing: To thaw a turkey that fits in the microwave, follow manufacturer’s recommendations. Cook it immediately after thawing because some areas of the food may become warm and begin to cook during the thawing process, bringing the food to the “Danger Zone.”

It’s safe to cook a completely frozen turkey; however, it will take at least 50 percent longer to fully cook.

Cook Thoroughly

Your turkey is safe to eat once it reaches an internal temperature of 165 F. Insert a food thermometer into the thickest part of the breast, the innermost part of the wing and the innermost part of the thigh to check its internal temperature. USDA recommends using a food thermometer even if the turkey has a pop-up temperature indicator to ensure it has reached 165 F in the three previously stated places.

Stuffing your Turkey

USDA recommends against stuffing your turkey since this often leads to bacteria growth. However, if you plan to stuff your turkey, follow these steps:

  • Prepare the wet and dry ingredients for the stuffing separately from each other and refrigerate until ready to use. Mix wet and dry ingredients just before filling the bird’s cavity.
  • Do not stuff whole poultry and leave in the refrigerator before cooking.
  • Stuff the turkey loosely — about 3/4 cup of stuffing per pound.
  • Immediately place the stuffed, raw turkey in an oven set no lower than 325 F.
  • A stuffed turkey will take longer to cook. Once it has finished cooking, place a food thermometer in the center of the stuffing to ensure it has reached a safe internal temperature of 165 F.
  • Let the cooked turkey stand 20 minutes before removing the stuffing.

For more information on turkey stuffing, visit Turkey Basics: Stuffing.

The Two-Hour Rule

Don’t leave your food sitting out too long! Refrigerate all perishable foods sitting out at room temperature within two hours of being cooked, or one hour if the temperature is 90 F or above. After two hours, perishable food will enter the “Danger Zone” (between 40 F and 140 F), which is where bacteria can multiply quickly and cause the food to become unsafe. Discard all foods that have been left out for more than two hours. Remember the rule — keep hot foods hot and cold foods cold.

  • Transporting hot foods — Wrap dishes in insulated containers to keep their temperature above 140 F.
  • Transporting cold foods — Place items in a cooler with ice or gel packs to keep them at or below 40 F.

When serving food to groups, keep hot food hot and keep cold food cold by using chafing dishes or crock pots and ice trays. Hot items should remain above 140 F and cold items should remain below 40 F.

Leftovers

Store leftovers in small shallow containers and put them in the refrigerator. Thanksgiving leftovers are safe to eat up to four days in the refrigerator. In the freezer, leftovers are safely frozen indefinitely but will keep best quality from two to six months.

Resources

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

Do you have any last-minute turkey day questions? The Meat and Poultry Hotline will be open on Thanksgiving Day from 8 a.m. to 2 p.m. EST.