Category Archives: Food Microbiology Research

Research – Study reveals Botulism impact in Italy

Food Safety News

kswfoodworld

Italian researchers have looked at botulism trends over two decades including a large outbreak in 2020.

Italy has one of the highest botulism rates in Europe with one factor being a strong home canning tradition in the country. From 1986 to September 2022, 406 botulism incidents involving 599 people were laboratory confirmed.

The study described the surveillance system as well as information on botulism cases reported by local health services and those from hospital discharge forms from 2001 to 2020.

Botulism is a rare but life-threatening condition caused by toxins produced by Clostridium botulinum bacteria. In foodborne botulism, symptoms generally begin 18 to 36 hours after eating a contaminated food. However, they can start as soon as six hours after or as long as 10 days later.

Symptoms can include general weakness, dizziness, double-vision, and trouble speaking or swallowing. It paralyzes respiratory muscles so most patients must be placed on life support. Difficulty breathing, weakness of other muscles, abdominal distention and constipation may also occur. People experiencing these problems should seek immediate medical attention.

Singapore introduces industry standard to guide sales of food products on online platforms to ensure food safety

SFA

gapore Standard (SS) 687: 2022 (Guidelines for food e-commerce) was launched at the Singapore Manufacturing Federation’s Singapore Innovation and Productivity Institute (SIPI) Food Tech 2023 event today to provide guidance to e-commerce players on their roles and responsibilities related to food safety and providing information to consumers. Announced by Ms. Grace Fu, Minister for Sustainability and the Environment, the standard covers key stages, best practices, and activities critical for the food e-commerce industry to ensure the safety of food products sold via online platforms.

SS 687 on Guidelines for food e-commerce can be purchased from the Singapore Standards eShop at http://www.singaporestandardseshop.sg

USA -FDA – Core Investigation Table – Investigations of Foodborne Illness Outbreaks

FDA

What’s New

  • An outbreak advisory has been issued for the outbreak of Listeria monocytogenes linked to enoki mushrooms (reference #1127).

Research – Microbiological safety of aged meat

EFSA

Abstract

The impact of dry-ageing of beef and wet-ageing of beef, pork and lamb on microbiological hazards and spoilage bacteria was examined and current practices are described. As ‘standard fresh’ and wet-aged meat use similar processes these were differentiated based on duration. In addition to a description of the different stages, data were collated on key parameters (time, temperature, pH and aw) using a literature survey and questionnaires.

The microbiological hazards that may be present in all aged meats included Shiga toxin-producing Escherichia coli(STEC),Salmonella spp., Staphylococcus aureus, Listeria monocytogenes, enterotoxigenic Yersinia spp., Campylobacter spp. and Clostridium spp. Moulds, such as Aspergillus spp. and Penicillium spp., may produce mycotoxins when conditions are favourable but may be prevented by ensuring a meat surface temperature of−0.5 to 3.0°C, with a relative humidity (RH) of 75–85% and an airflow of 0.2–0.5 m/s for up to 35 days.

The main meat spoilage bacteria include Pseudomonas spp., Lactobacillus spp. Enterococcus spp., Weissella spp., Brochothrix spp., Leuconostoc spp. Lactobacillus spp., Shewanella spp. and Clostridium spp. Undercurrent practices, the ageing of meat may have an impact on the load of microbiological hazards and spoilage bacteria as compared to standard fresh meat preparation. Ageing under defined and controlled conditions can achieve the same or lower loads of microbiological hazards and spoilage bacteria than the variable log10increases predicted during standard fresh meat preparation. An approach was used to establish the conditions of time and temperature that would achieve similar or lower levels of L. monocytogenes and Yersinia enterocolitica (pork only) and lactic acid bacteria(representing spoilage bacteria) as compared to standard fresh meat. Finally, additional control activities were identified that would further assure the microbial safety of dry-aged beef, based on recommended best practice and the outputs of the equivalence assessment.

Taipei – Nearly 140,000 seek treatment for diarrhea – Norovirus

Taipei Times

Nearly 140,000 people sought medical treatment for diarrhea last week, as 64 clusters of diarrhea cases were reported over the past four weeks, the Centers for Disease Control (CDC) said in a news release on Monday, advising people to maintain good hand hygiene and food safety practices during the Lunar New Year holiday.

From Jan. 8 to Saturday last week, 139,728 people went to see a doctor for diarrhea — higher than the 104,114 and 116,497 cases reported in the same period last year and in 2021 respectively, the CDC’s surveillance data showed.

A total of 64 clusters of diarrhea cases were also reported in the past four weeks, higher than the 54 clusters reported in the same period last year, it said.

Switzerland – One died in a Swiss Listeria monocytogenes outbreak traced to smoked fish

Food Safety News

Swiss authorities have revealed a Listeria outbreak sickened 20 and killed one person in 2022.

The Federal Office of Public Health (OFSP), Federal Food Safety and Veterinary Office (OSAV), and cantonal, or regional, authorities detected an outbreak of listeriosis in July 2022 and identified smoked trout as the source.

In early July, an unusually high number of Listeria monocytogenes cases were reported to OFSP. Whole genome sequencing (WGS) confirmed they were linked.

As part of an investigation carried out with OFSP, patients were interviewed and evidence pointed to smoked trout produced by one company.

Cantonal food authorities carried out an inspection of the firm in the canton of Thurgovie, also known as Thurgau, which found the bacteria in smoked trout and in the production environment. WGS matched the isolates from food samples and patients, confirming the link.

In July, smoked fish from the company Kundelfingerhof was withdrawn from sale and recalled from stores such as Coop, Migros, and Volg.

Research – USA – Food Safety and Inspection Service (FSIS) 2023–2026 Strategic Plan

FSIS USDA

The Food Safety and Inspection Service (FSIS) is the public health regulatory agency of the U.S. Department of Agriculture (USDA) responsible for ensuring that domestic and imported meat, poultry, and egg products are safe, wholesome, and accurately labeled. Consistent with its role, FSIS’ mission is to protect public health by preventing illness from meat, poultry, and egg products. That mission guides FSIS’ actions—from implementing and enforcing the Acts from which it gets its regulatory authority (Box 1), to incorporating data and science into Agency decision making, and to continuously improving its operations to ensure it functions in the most efficient and effective manner. It is through that mission and the actions guided by it that FSIS works toward its vision that everyone’s food is safe

Thailand – Bangkok kids suffer food poisoning after eating free noodles for Children’s Day

The Thaiger

A group of Bangkok kids suffered food poisoning after eating free noodles on Friday for Children’s Day. Over 10 ambulances rushed to Wat Naknimit School on Soi Suksawat 14, Suksawat road, to help the 30 kids.

One female student said someone had distributed packs of instant noodles fried with crab sticks, sausages, eggs, and cabbage at a table. They later started to feel ill.

Research – IFST Fact Sheet – Safe Heating of Food

IFST

This Food Science Fact Sheet is one of a series compiled by Institute of Food Science and Technology, providing clear, concise and scientifically reliable information on key food science topics for consumers.

Safe Heating of Food – Saving energy and staying safe

Research Breakthrough in fighting Legionnaires’ disease

Eurekalert

A new study of domestic and hospital drinking water systems found Legionella in 41% of samples – with Flinders University researchers making a key connection between the pathogen’s co-existence with a ‘host’ microorganism in all samples tested.

The study found Legionella bacteria “infect the amoeba host and then once inside these hosts are protected from disinfection strategies,” says Flinders University Associate Professor of Environmental Health Harriet Whiley, a co-author of the new journal article in Water Research.

Researchers tested for Legionella and its likely amoebae hosts in 140 samples of water or biofilm (the slime found on showerheads and end of faucets) to understand how the potentially dangerous bacterium colonises and proliferates in both domestic and hospital plumbing and poses a threat to human health.