Category Archives: foodborne outbreak

Kenya – Salmonella and E. coli suspected in large, deadly outbreak in Kenya

Food Safety News

Four people have died and more than 600 were sickened at two schools in Kenya recently.

The Ministry of Health (MOH) is investigating a suspected gastroenteritis outbreak at Mukumu Girls and Butere Boys high schools in Kakamega County.

The illness appears to have started on March 1 and as of April 14, 627 patients are sick with 19 students admitted to seven health facilities across the country. Symptoms include fever, abdominal pain, cramps, vomiting, and diarrhea. One teacher and three students have died.

Both schools have been closed by the Ministry of Education and Kakamega County government while investigations are ongoing.

Research – Nestlé strikes settlement deal over France E. coli scandal

Just Food

Nestlé has agreed to a settlement with victims of a fatal E. coli outbreak last year.

Dozens of children fell sick after eating contaminated food – and two died. In April last year, the Paris prosecutor’s office opened an investigation into alleged involuntary manslaughter. Health officials ordered production at the Caudry factory to cease five days later.

The company told Just Food today (18 April) it had settled with “the vast majority of claimants”, who are represented by lawyer Pierre Debuisson

USA- FDA Core Outbreak Table Update – Investigations of Foodborne Illness Outbreaks

FDA

What’s New

  • For the outbreak of Salmonella Infantis (ref #1141), an onsite inspection and sample collection and analysis has been initiated.
  • For the outbreak of Salmonella Hartford (ref #1144), the case count has increased from 53 to 54 cases. This outbreak has ended and the investigation has closed, with no vehicle identified.
  • For the outbreak of hepatitis A virus (ref #1143), an onsite inspection has been initiated.
Date
Posted
Ref Pathogen
or
Cause of
Illness
Product(s)
Linked to
Illnesses

(if any)
Total
Case
Count

Status
3/29/2023 1141 Salmonella Infantis Raw Flour See
CDC
Investigation
Notice
Active
3/1/2023 1143 Hepatitis A Virus Frozen Organic
Strawberries
See
Outbreak
Advisory
Active
2/15/2023 1123 Listeria
monocytogenes
Not Yet
Identified
See
CDC
Investigation
Notice
Active

USA – FDA begins onsite inspection of unnamed location in relation to flour outbreak – Salmonella

Food Safety News

The Food and Drug Administration has expanded its investigation into an outbreak of infections caused by Salmonella Infantis that has been linked to flour.

As of the most recent update, on March 30, from the Centers for Disease Control and Prevention, the outbreak has sickened at least a dozen people across 11 states. Three of the patients have required hospitalization. No deaths have been reported.

Although a specific brand of flour has not been revealed by federal officials, the FDA reports that it has begun onsite inspection of an unnamed location and sample collection.

Illnesses started on dates ranging from Dec. 6, 2022, to Feb. 13, 2023, but there are likely more sick people who have not yet been confirmed because of the time it takes for testing and reporting.

Nigeria – 79 died from 1,336 cases of cholera: NCDC

GAZETTENGR

The Nigeria Centre for Disease and Prevention Control (NCDC) has registered 79 deaths and a total of 1,336 suspected cases of cholera in the country so far in 2023.

The NCDC, via its official website, said this in its latest cholera situation epidemiological report.

Cholera is an acute diarrheal illness caused by infection of the intestine with Vibrio cholera bacteria.

People can get sick when they swallow food or water contaminated with cholera bacteria. The infection is often mild or without symptoms but can sometimes be severe and life-threatening.

The agency said 12 states across 43 local government areas reported the suspected cases, with a case fatality ratio of 5.9 per cent.

Research – Salmonella and Flour

Food Poisoning News

Salmonella has struck again with a recent multistate outbreak spanning eleven states, resulting in at least a dozen ill including three requiring hospitalization. The CDC has identified raw flour as the culprit, but are still trying to pinpoint which brand(s). The sources of these victims’ illnesses have been identified as both raw dough and batter, with the only common denominator in these consumed products being raw flour.

Baked/fully cooked flour isn’t an issue, but the problem is that many people consume flour raw by eating cookie dough or batter before cooking it. Although it can be fun to “try a little on your finger” before it goes into the oven and has a chance to cook, this is an inherently dangerous practice. The flour in these uncooked products is raw, which means it hasn’t been treated for bacteria yet (one way to “treat” food is to heat it to a sufficient temperature, as is done with cakes and cookies). Cooking the product eliminates the bacteria, therefore drastically reducing the chance of becoming ill.

This is why it is extremely important that when making these types of foods that consumers follow the instructions for how high the temperature needs to be when cooking, and for how long a product needs to bake. Thee instructions aer both to provide a well-cooked product, but also for safety. These directions are on the packaging to ensure that your food isn’t undercooked, which is a strong contributor to illness.

Turkey – Tourists struck down by food poisoning at 5-star TUI resort in Turkey as one hospitalised

The Mirror

Around 25 tourists have been struck down by a food poisoning outbreak at a five-star resort in Turkey.

At least one of the British holidaymakers – on all-inclusive deals with holiday firm TUI – has been hospitalised.

One holidaymaker said there were “more than 10 families suffering” and “numbers are growing by the day”.

Kate Dowling tweeted: “My family are in Rixos Sungate – three out of five have food poisoning with one hospitalised. Staff are not doing anything to help, denying all knowledge even though other guests have complained.”

Research – Raw food: health risks are often underestimated

BFR

A glass of raw milk for breakfast, a roll with raw ham in the lunch break and a homemade smoothie with frozen berries in the afternoon – raw or unheated food is a regular part of the population’s menu. This is shown by a current, representative survey by the Federal Institute for Risk Assessment ( BfR ). Raw animal and vegetable products should be consumed with caution. They can contain pathogenic germs such as salmonella, listeria and campylobacter and lead to foodborne infections. Small children, people with previous illnesses, the elderly and pregnant women are particularly at risk. “The health risks of raw foods are often underestimated,” says BfR-President Professor Dr. dr Andrew Hensel. “Heating protects. Diseases can be avoided with simple kitchen hygiene rules. Sensitive groups of people in particular should only eat raw animal food that has been sufficiently heated.”

To the BfR Consumer Monitor Special information brochure, raw foods:

The particularly popular raw foods include raw sausage and raw ham, which are eaten several times a week by more than a third of those surveyed. At least one to three times a month, 73 percent of those surveyed eat raw meat and sausage products, followed by soft cheese made from raw milk (57 percent). Other foods eaten with the same frequency by around a third of those surveyed are raw meat (38 percent), cold-smoked fish (33 percent) and frozen berries (33 percent). While about one in five (21 percent) eats raw sweet dough with eggs at least once or three times a month, it is still one in eight (12 percent) when it comes to raw dough without eggs. 19 percent of respondents drink raw milk at least one to three times a month.

Every year around 100,000 diseases are reported in Germany that may have been caused by bacteria, viruses or parasites in food. The number of unreported cases is likely to be much higher. While salmonella, listeria and norovirus are known to the majority of the population, the knowledge about other food-related pathogens is less good. Particularly surprising: Although campylobacteriosis has been the most frequently reported bacterial food-borne illness in Germany and Europe for years, only just under a quarter (23 percent) of people know the causative pathogen Campylobacter . The same applies to the abbreviations STEC, EHEC and VTEC for particularly dangerous Escherichia coli-Bacteria (27 percent). The pathogens mentioned can lurk in a large number of raw foods: salmonella and campylobacter in poultry, chicken eggs and raw meat and sausage products, listeria in cold-smoked fish products and raw milk cheese or noroviruses in raw oysters and frozen berries as well as STEC in flour.

The perception of the health risk sometimes differs greatly between different raw or unheated foods. The majority of respondents see a medium to (very) high health risk in particular with raw fish and raw seafood, raw meat, raw eggs and raw sweet dough with eggs. Frozen berries, on the other hand, are perceived as the least risky. Other foods that the majority of those surveyed also associate with a (very) low health risk are soft cheese made from raw milk, cold-smoked fish, raw sausage and raw ham, as well as raw dough without eggs.

In order to protect yourself from foodborne infections, it is important to observe the rules of kitchen hygiene so that pathogens do not spread from raw foods to others. Small children, pregnant women and people with a weakened immune system should only eat raw food from animals if they have been sufficiently heated beforehand.

Via the BfR consumer monitor

Whether antibiotic resistance, microplastics, salmonella or aluminum in food – which health risks are known to the population and what worries them? The BfR Consumer Monitor, a representative population survey that has been carried out regularly since 2014, provides answers to these and other questions . To this end, around 1,000 people living in private households in Germany are being interviewed by telephone on behalf of the BfR . In addition, the BfR conducts representative surveys on individual topics that are of particular current interest, such as tattoos, e-cigarettes, superfoods or additives in food.

Research – Large Multicountry Outbreak of Invasive Listeriosis by a Listeria monocytogenes ST394 Clone Linked to Smoked Rainbow Trout, 2020 to 2021

ASM

Whole-genome sequencing (WGS) has revolutionized surveillance of infectious diseases. Disease outbreaks can now be detected with high precision, and correct attribution of infection sources has been improved. Listeriosis, caused by the bacterium Listeria monocytogenes, is a foodborne disease with a high case fatality rate and a large proportion of outbreak-related cases. Timely recognition of listeriosis outbreaks and precise allocation of food sources are important to prevent further infections and to promote public health. We report the WGS-based identification of a large multinational listeriosis outbreak with 55 cases that affected Germany, Austria, Denmark, and Switzerland during 2020 and 2021. Clinical isolates formed a highly clonal cluster (called Ny9) based on core genome multilocus sequence typing (cgMLST). Routine and ad hoc investigations of food samples identified L. monocytogenes isolates from smoked rainbow trout filets from a Danish producer grouping with the Ny9 cluster. Patient interviews confirmed consumption of rainbow trout as the most likely infection source. The Ny9 cluster was caused by a MLST sequence type (ST) ST394 clone belonging to molecular serogroup IIa, forming a distinct clade within molecular serogroup IIa strains. Analysis of the Ny9 genome revealed clpYdgcB, and recQ inactivating mutations, but phenotypic characterization of several virulence-associated traits of a representative Ny9 isolate showed that the outbreak strain had the same pathogenic potential as other serogroup IIa strains. Our report demonstrates that international food trade can cause multicountry outbreaks that necessitate cross-border outbreak collaboration. It also corroborates the relevance of ready-to-eat smoked fish products as causes for listeriosis.
IMPORTANCE Listeriosis is a severe infectious disease in humans and characterized by an exceptionally high case fatality rate. The disease is transmitted through consumption of food contaminated by the bacterium Listeria monocytogenes. Outbreaks of listeriosis often occur but can be recognized and stopped through implementation of whole-genome sequencing-based pathogen surveillance systems. We here describe the detection and management of a large listeriosis outbreak in Germany and three neighboring countries. This outbreak was caused by rainbow trout filet, which was contaminated by a L. monocytogenes clone belonging to sequence type ST394. This work further expands our knowledge on the genetic diversity and transmission routes of an important foodborne pathogen.

Research Imported spring onions related to the first recorded outbreak of enteroinvasive Escherichia coli in Denmark, November to December 2021

Eurosurveillance

Enteroinvasive  (EIEC) is a Gram-negative bacteria causing diarrhoeal disease. EIEC is transmitted via the faecal–oral route, with a usual incubation period of 1–3 days; infections are frequently related to contaminated food and water [1,2]. In Denmark, disease caused by EIEC is mostly observed in returning travellers, but secondary transmission from person-to-person may occur [3]. In Europe, outbreaks of EIEC in 2012, 2014 and 2017 have been reported and, for all of these, contaminated vegetables were suspected as the source [46].

Clinically, EIEC infections present either with watery diarrhoea or dysentery. EIEC invade the epithelial cells of the large intestine in the same manner as  and symptoms resulting from EIEC infection are clinically indistinguishable from shigellosis [7]. Studies have shown that  and  species have high genomic and phenotypic similarity, leading to propose that  species should be reclassified as a subspecies of  [8,9].

Diagnostics of EIEC in Denmark are done locally through 10 different clinical microbiology laboratories situated at hospitals in the five Danish regions. The criteria for carrying out an EIEC diagnostic vary. Some laboratories test all faecal samples for diarrhoeagenic  including EIEC, while others test only faecal samples from suspected patients, based on their age, travel history and presence of bloody diarrhoea. The PCR diagnostic assays target the invasive plasmid gene () shared by both  spp. and EIEC [10]. Culture is required to differentiate the two species, and if culture is not possible or unsuccessful, faecal specimens are considered positive for the combination /EIEC. Detection of /EIEC is voluntarily notified as part of the Danish laboratory surveillance, where episodes are irregularly reported by the clinical microbiology laboratories to Statens Serum Institut (SSI), the national public health institute. All isolates from successfully cultured samples are furthermore routinely sent on a voluntary basis to SSI for further characterisation.

Outbreak detectionOn 10 December 2021, the clinical microbiology laboratory at Slagelse hospital in Region Zealand reported observing an increase between 5 and 8 December of patients diagnosed with domestically-acquired EIEC. During this period, this laboratory had detected a total of five such patients. On the same day (10 December), SSI identified one EIEC isolate with serotype O96:H- and three with serotype O136:H7 (two of which originated from Slagelse hospital), the latter a type never found in human samples from Denmark before. In total, between 6 and 10 December, SSI had received six EIEC isolates from three different regions of Denmark, exceeding the total number of EIEC isolates that were received in the months of December of the 2 previous years. A national outbreak was therefore declared on 13 December.