Category Archives: microbial contamination

Norway – Outbreak of Salmonella infection

Matportalen

The Norwegian Food Safety Authority has been notified by the Norwegian Institute of Public Health about a national outbreak of the gastrointestinal bacterium Salmonella Napoli. So far, infection has been detected in seven people. The source of infection is not known.

An outbreak investigation has been initiated in collaboration between the Norwegian Food Safety Authority, the Norwegian Institute of Public Health, the Veterinary Institute and municipal chief medical officers. It is currently unknown what the source of infection is, but it is common for gastrointestinal bacteria to become infected through food. According to the Norwegian Institute of Public Health, the most common symptoms are diarrhoea, headache, abdominal pain, nausea and possibly fever.

– The Norwegian Food Safety Authority collects information from the sick persons about what they have eaten and what they have been in contact with. It may also be relevant to take samples of food and food packaging, says Anne Mæland, senior advisor in the biological food safety section of the Norwegian Food Safety Authority.

Outbreak investigation takes time and the work is complicated. It is not always possible to find the source of infection in such outbreaks. If a common source of infection from food, animals or the environment is identified, the Norwegian Food Safety Authority will follow up the tracing work along the food chain.

USA – FDA Advises Restaurants and Retailers Not to Serve or Sell and Consumers Not to Eat Oysters from Future Seafoods, Inc., Potentially Contaminated with Salmonella and E. coli

FDA

Audience

  • Restaurants and food retailers in Florida (FL), Massachusetts (MA), Maryland (MD), Maine (ME), Pennsylvania (PA), and Virginia (VA) that have recently purchased oysters harvested from Future Seafoods, Inc. (PE 4217 SP) based in Bedeque, Prince Edward Island, Canada.
  • Consumers who have recently purchased oysters from Future Seafoods, Inc. (PE 4217 SP) in FL, MA, MD, ME, PA, or VA.

Product

  • Oysters from Future Seafoods, Inc. (PE 4217 SP), Prince Edward Island, Canada, harvested on 10/10/2023 from harvest area PE9B, and distributed to restaurants and retailers in FL, MA, MD, ME, PA, and VA.

Purpose

The FDA is advising restaurants and food retailers not to sell and to dispose of oysters and consumers not to eat oysters from Future Seafoods, Inc. (PE 4217 SP), Prince Edward Island, Canada, from harvest area PE9B on 10/10/2023, and shipped on 10/10/2023 to importers in FL, MA, MD, ME, PA, and VA, due to the possible presence of Salmonella and E. coli.

Contaminated oysters can cause illness if eaten raw, particularly in people with compromised immune systems. Food contaminated with Salmonella and E. coli may look, smell, and taste normal. Consumers of these products who are experiencing symptoms of salmonellosis or E. coli should contact their healthcare provider and report their symptoms to their local Health Department.

Symptoms of Salmonella infection

Most people infected with Salmonella will begin to develop symptoms 12 to 72 hours after infection. The illness, salmonellosis, usually lasts four to seven days and most people recover without treatment.

Most people with salmonellosis develop diarrhea, fever, and abdominal cramps. More severe cases of salmonellosis may include a high fever, aches, headaches, lethargy, a rash, blood in the urine or stool, and in some cases may become fatal.

Due to the range in severity of illness, people should consult their healthcare provider if they suspect that they have developed symptoms that resemble a Salmonella infection.

Symptoms of E. coli infection

E. coli are mostly harmless bacteria that live in the intestines of people and animals and contribute to intestinal health. However, eating or drinking food or water contaminated with certain types of E. coli can cause mild to severe gastrointestinal illness. Some types of pathogenic (illness-causing) E. coli, such as Shiga toxin-producing E. coli (STEC), can be life-threatening.

People infected with pathogenic E. coli can start to notice symptoms anywhere from a few days after consuming contaminated food or as much as nine days later. Generally, the symptoms include severe stomach cramps, diarrhea, fever, nausea, and/or vomiting.

The severity or presence of certain symptoms may depend on the type of pathogenic E. coli causing the infection. Some infections can cause severe bloody diarrhea and lead to life-threatening conditions, such as a type of kidney failure called hemolytic uremic syndrome (HUS), or the development of high blood pressure, chronic kidney disease, and neurologic problems. Other infections may have no symptoms or may resolve without medical treatment within five to seven days.

Due to the range in severity of illness, people should consult their health care provider if they suspect that they have developed symptoms that resemble an E. coli infection.

People of any age can become infected with pathogenic E. coli. Children under the age of 5 years, adults older than 65, and people with weakened immune systems are more likely to develop severe illness as a result of a pathogenic E. coli infection. However, even healthy older children and young adults can become seriously ill.

Summary of Problem and Scope

On 10/10/2023, the Canadian Food Inspection Agency (CFIA) tested oysters and discovered the presence of Salmonella and unacceptable levels of generic E. coli. On 10/18/2023, the CFIA informed the FDA of the testing results from the contaminated product. Canada is investigating the cause of the food safety problem. Future Seafoods, Inc. has not yet initiated a recall.

FDA Actions

The FDA is issuing this alert advising restaurants and food retailers not to sell and consumers not to eat oysters from Future Seafoods, Inc. (PE 4217 SP) harvested on 10/10/2023 from harvest area PE9B due to contamination from Salmonella and unacceptable levels of generic E. coli. The FDA is awaiting further information on distribution of the oysters harvested and will continue to monitor the investigation and provide assistance to state authorities as needed. As new information becomes available, the FDA will update the safety alert.

Recommendations for Consumers

Consumers who have symptoms should contact their health care provider to report their symptoms and receive care.

To report a complaint or adverse event (illness or serious allergic reaction), you can

Visit www.fda.gov/fcic  for additional consumer and industry assistance.

Research – Pathogen that plagues food processing plants eradicated by blue light – Listeria monocytogenes

News Wise

Newswise — Washington, D.C. – Blue light kills both dried cells and biofilms of the pathogen Listeria monocytogenes, a frequent contaminant of food processing facilities. Demise of L. monocytogenes occurred quickest when cells or biofilms were placed on polystyrene, a widely used, transparent form of plastic. The research is published in Applied and Environmental Microbiology, a journal of the American Society for Microbiology.

“These results contribute to advancing our understanding of the potential of blue light to treat inert surfaces contaminated with L. monocytogenes,” said corresponding author Francisco Diez-Gonzalez, Ph.D., Director and Professor, Center for Food Safety, University of Georgia. Although biofilms of pathogens are generally powerfully resistant to being exterminated, the results suggest that blue light could effectively destroy L. monocytogenes.

In the study, the investigators deposited liquid suspensions of mixtures of 5 strains of L. monocytogenes on small, sterile rectangular plates made of 6 different materials, including polystyrene, stainless steel and silicone rubber, which were then allowed to dry. The investigators also used similar plates to grow biofilms, which they also allowed to dry.

Then, they shined blue light onto the biofilms and onto the dried suspensions of cells on the plates to determine the most effective combinations of doses and wavelengths, as well as the most effective surfaces on which to extirpate the pathogens.

“The application of blue light for controlling microbial contamination has the potential to offer an additional technology that could complement existing methods for disinfecting surfaces in contact with foods,” said Diez-Gonzalez, noting that blue light has been used for disinfection in hospitals. As compared to ultraviolet light, blue light offers reduced risk for the user, he said.

A post-doc in Diez-Gonzalez’ laboratory, Fereidoun Forghani, Ph.D., kick-started the investigation when—searching for new ideas—he came across the use of blue light as a potential antimicrobial intervention to sanitize surfaces. Forghani built some blue light prototypes and produced the first preliminary results treating pure cultures of Listeria.

Philippines – Food poisoning

Mindanao Times

ELEVEN individuals, mostly kids, were rushed to the hospital on Monday evening after they were downed by food poisoning at Sitio Matigsalug, Barangay Marilog, Marilog District.

According to the report, the caretaker Evangeline Palao told investigators that their employer Geraldina Bocuya from Deca Homes Mintal brought spaghetti when she visited their place at noon on Monday.

But after a few hours, the patients complained of stomach ache and started vomiting.

However, Tuazon said they could not yet ascertain if the spaghetti was the cause of the food poisoning or the tubod (spring water).

Taiwan – Over 20 Taiwanese elementary students suffer food poisoning from school lunches

Taiwan News

TAIPEI (Taiwan News) — As of Saturday (Oct. 14) night, more than 20 elementary students in Keelung City were admitted to the hospital due to food poisoning from school food.

The students, who all attend Shen-Mei Elementary School in Xinyi District, began reporting symptoms of vomiting Friday (Oct. 13) night, with students being admitted to emergency rooms the following day, reported UDN. Investigators suspect that a spoiled milk product served on Friday is responsible for the food poisoning.

Samples of milk, yogurt, and other food items served at the school have been taken for testing to determine the precise origin of the foodborne illness.

USA -Another Hepatitis A scare linked to positive food service worker

Food Poison Journal

The Maine Center for Disease Control and Prevention has identified a case of hepatitis A in a food service worker at a Portland restaurant.

Hepatitis A is a contagious liver disease that can spread through person-to-person contact or contaminated food.

The Maine CDC says the worker was infectious at the Green Elephant Bistro in Portland during the following times:

  • 9/21 (dinner only)
  • 9/23 (lunch and dinner)
  • 9/24 (dinner only)
  • 9/27 (dinner only)
  • 9/28 (lunch and dinner)
  • 9/30 (lunch and dinner)
  • 10/1 (dinner only)
  • 10/4 (dinner only)
  • 10/5 (dinner only)

Customers who ate inside the restaurant during these times could be at risk for hepatitis A.

India – 16 students hospitalised due to suspected food poisoning at BMC-run school

Hindustan Times

16 students of a civic-run school in Mumbai were hospitalized due to suspected food poisoning after eating a midday meal provided by Shantai Mahila Industrial Co-operative Society. The affected students are now in stable condition and the food supply operation has ceased.

D Gangadharan, joint commissioner (education), BMC along with Kankal and other officials, visited the hospital to inspect the students’ well-being. Gangadharan said, “We examined the school premises to assess the situation. A sample of the food supplied at the school and other materials that were used in the kitchen has been sent to the BMC laboratory in G/North for testing, and the analysis report is expected shortly.”

Research – Risk assessment of norovirus and hepatitis A virus in strawberries imported into China

Wiley Online

Abstract

Norovirus (NoV) and hepatitis A virus (HAV) pose a considerable health risk worldwide. In recent years, many cases of virus infection caused by virus-contaminated strawberries have occurred worldwide. This study applied a critical control point system to analyze the main hazards during the production and marketing of strawberries imported into China and explore the key control points in the whole process. To further evaluate the risks in the supply chain, the established quantitative microbial risk assessment (QMRA) was used to determine the probability that residents would be infected with viruses after consuming imported strawberries. It was found that the risk of virus contamination from imported strawberries was low, and the virus contamination mainly results from water resources and personnel. This research helps the regulatory authorities formulate strategies to ensure the long-term microbial safety of imported strawberries. In addition, the methods may prove useful in evaluating the risks of other agricultural produce.

Research – Pathogenic E. coli in the Food Chain across the Arab Countries: A Descriptive Review

MDPI

Abstract

Foodborne bacterial infections caused by pathogens are a widespread problem in the Middle East, leading to significant economic losses and negative impacts on public health. This review aims to offer insights into the recent literature regarding the occurrence of harmful E. coli bacteria in the food supply of Arab countries. Additionally, it aims to summarize existing information on health issues and the state of resistance to antibiotics. The reviewed evidence highlights a lack of a comprehensive understanding of the extent to which harmful E. coli genes are present in the food supply of Arab countries. Efforts to identify the source of harmful E. coli in the Arab world through molecular characterization are limited. The Gulf Cooperation Council (GCC) countries have conducted few surveys specifically targeting harmful E. coli in the food supply. Despite having qualitative data that indicate the presence or absence of harmful E. coli, there is a noticeable absence of quantitative data regarding the actual numbers of harmful E. coli in chicken meat supplies across all Arab countries. While reports about harmful E. coli in animal-derived foods are common, especially in North African Arab countries, the literature emphasized in this review underscores the ongoing challenge that harmful E. coli pose to food safety and public health in Arab countries.

Research – New publication about microbiological hazards in fresh fruits and vegetables

FAO

Fresh fruits and vegetables contaminated with foodborne pathogens (bacteria, viruses, protozoa, helminths, etc.) have resulted in numerous outbreaks of foodborne illness, made headlines and caused trade disruptions around the world. To better understand these hazards, and how to prevent and mitigate the risks, FAO and WHO convened a meeting of scientific experts to identify and evaluate commodity-specific interventions used to reduce the risk of microbiological hazards in fresh fruit and vegetable production – from primary production to post-harvest activities, transportation, point of sale and preparation for consumption. A new report is now available and provides guidance, taking into consideration the effectiveness, practicality and suitability of the various approaches used in fruit and vegetable safety.

Prevention and control of microbiological hazards in fresh fruits and vegetables – Part 4: Specific commodities, which is volume 44 in the FAO/WHO Microbiological Risk Assessment Series, is the report of the meeting convened by the Secretariat of the Joint FAO/WHO Expert Meetings on Microbiological Risk Assessment (JEMRA). It addresses four commodity groups:  leafy vegetables and herbs, berries and tropical fruits, melons and tree fruits, and seeded and root vegetables.

This assessment updates and expands previous JEMRA work on the safety of fruits and vegetables and supports work being conducted by the Codex Alimentarius Commission on the development of guidelines for the control of Shiga toxin-producing Escherichia coli (STEC) in leafy vegetables and in sprouts.

Download the report