USA – Listeria Monocytogenes Outbreak Announced; No Food Identified

Food Poisoning Bulletin

A Listeria monocytogenes outbreak has been announced by the Centers for Disease Control and Prevention (CDC). Twenty-four people in 13 states are sick. Twenty-two people have been hospitalized, and two people have died.

Listeria Monocytogenes Outbreak Announced; No Food Identified

Research -Tiny droplets allow bacteria to survive daytime dryness on leaves

Science Daily

Microscopic droplets on the surface of leaves give refuge to bacteria that otherwise may not survive during the dry daytime, according to a new study published today in eLife.

Understanding this bacterial survival strategy for dry conditions may enable scientists to develop practices that support healthy plant microbiomes in agricultural and natural settings.

The surface of an average plant leaf is teeming with about 10 million microbes — a population comparable to that of large cities — that contribute to the health and day-to-day functioning of the plant. Scientists have long wondered how bacteria are able to survive as daytime temperatures and sunlight dry off leaf surfaces.

“While leaves may appear to be completely dry during the day, there is evidence that they are frequently covered by thin liquid films or micrometre-sized droplets that are invisible to the naked eye,” says co-lead author Maor Grinberg, a PhD student at Hebrew University’s Robert H. Smith Faculty of Agriculture, Food, and Environment in Rehovot, Israel. “It wasn’t clear until now whether this microscopic wetness was enough to protect bacteria from drying out.”

To answer this question, Grinberg, together with co-lead author and Research Scientist Tomer Orevi and their team, recreated leaf surface-like conditions in the laboratory using glass plates that were exposed to various levels of humidity. They then conducted experiments with more than a dozen different bacteria species in these conditions.

They observed that while these surfaces appeared dry to the naked eye, under a microscope bacteria cells and aggregates were safely shielded in miniscule droplets. Interestingly, larger droplets formed around aggregates of more than one cell, while only tiny droplets formed around solitary cells. This microscopic wetness is caused by a process called deliquescence — where hygroscopic substances, such as aerosols, that are prevalent on leaves absorb moisture from the atmosphere and dissolve within the moisture to form the droplets.

“We found that bacteria cells can survive inside these droplets for more than 24 hours and that survival rates were much higher in larger droplets,” Orevi explains. “Our results suggest that through methods of self-organisation, for example by aggregation, these cells can improve their survival chances in environments frequently exposed to drying.”

These findings could have important implications for agriculture as human practices may inadvertently interfere with this bacterial survival mechanism, endangering the health of crops and natural vegetation, according to senior author Nadav Kashtan, PhD, Assistant Professor at Hebrew University’s Robert H. Smith Faculty of Agriculture, Food, and Environment. “A greater understanding of how microscopic leaf wetness may protect the healthy plant microbiome and how it might be disrupted by agricultural practices and human aerosol emissions is of great importance,” he says.

Kashtan also notes that similar microscopic surface wetness likely occurs in soil, in the built environment, on human and animal skin, and potentially even in extra-terrestrial systems where conditions might allow, suggesting such bacterial survival strategies are not limited to leaf surfaces.


Story Source:

Materials provided by eLife.

USA -Moby Dick House of Kabob Salmonella Outbreak Increases to 23 Sick

Food Poisoning Bulletin Salmonella kswfoodworld

The Moby Dick House of Kabob Salmonella outbreak has now sickened 23 people, Maureen Regan, Deputy Director, Integrated Media Office of Communications at the Maryland Department of Health told Food Poisoning Bulletin. The latest update on the Salmonella outbreak investigation was posted on September 26, 2019.

Canada -Updated Food Recall Warning – Various raw beef and raw veal products recalled due to E. coli O157:H7

CFIA

Recall details

Ottawa, October 17, 2019 – The food recall warnings issued on October 11, 15, and 16, 2019 have been updated to include additional product information as well as corrected information. This additional information was identified during the Canadian Food Inspection Agency’s (CFIA) food safety investigation. The corrections are marked by an asterisk (*) in the link above.

Industry is recalling various raw beef and raw veal products from the marketplace due to possible E. coli O157:H7 contamination. Consumers should not consume and distributors, retailers and food service establishments such as hotels, restaurants, cafeterias, hospitals and nursing homes should not sell or use the recalled products described in the link above

The following products have been sold as indicated in the table below.

Ongoing investigation

See complete list of recalled products associated with this ongoing investigation.

Canada -Updated Food Recall Warning – Various Ready-to-Eat dry sausages and products recalled due to Salmonella

CFIA

Recall details

Ottawa, October 17, 2019 – The food recall warning issued on October 16, 2019 has been updated to include additional product information. This additional information was identified during the Canadian Food Inspection Agency’s (CFIA) food safety investigation.

Longo’s is recalling various ready-to-eat dry sausages and products from the marketplace due to possible Salmonella contamination. Consumers should not consume the recalled products described below.

Recalled products

Brand Product Size UPC Codes
Longo’s Filicetti Cacciatori Mild VP Variable – clerk served at deli counter Starts with 00226186 All Packaged On dates up to and including October 16, 2019
(Lot 611)
Longo’s Filicetti Cacciatori Dry Mild Variable Starts with
00226188
Lot 611
Longo’s Grab N Go Trays – Taralli Antipasti To Go Variable Starts with
0226209
All Best Before Dates up to and including October 23, 2019
Longo’s Grab N Go Trays – Italian Antipasti To Go Variable Starts with
0226208
All Best Before Dates up to and including October 23, 2019

What you should do

If you think you became sick from consuming a recalled product, call your doctor.

Check to see if you have the recalled products in your home. Recalled products should be thrown out or returned to the store where they were purchased.

Food contaminated with Salmonella may not look or smell spoiled but can still make you sick. Young children, pregnant women, the elderly and people with weakened immune systems may contract serious and sometimes deadly infections. Healthy people may experience short-term symptoms such as fever, headache, vomiting, nausea, abdominal cramps and diarrhea. Long-term complications may include severe arthritis.

Background

This recall was triggered by test results. The CFIA is conducting a food safety investigation, which may lead to the recall of other products. If other high-risk products are recalled, the CFIA will notify the public through updated Food Recall Warnings.

The CFIA is verifying that industry is removing the recalled products from the marketplace.

Illnesses

There have been no reported illnesses associated with the consumption of these products.

Product photos

Printer ready version of photos

  • clerk served sausage
  • Filicetti Cacciatori Dry Mild on shelf
  • Italian Antipasti to Go
  • Taralli Antipasti to Go

RASFF Alerts – Listeria monocytogenes – Gorgonzola Mascarpone – Smoked Duck Fillet – Shrimp Salad

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RASFF – Listeria monocytogenes (320 CFU/g) in gorgonzola mascarpone from Italy in Switzerland

RASFF – Listeria monocytogenes (>15 000 CFU/g) in smoked duck fillet from France In France

RASFF – Listeria monocytogenes (presence /25g) in shrimp salad from the Netherlands in the Netherlands

 

RASFF Alert – Aeromonas spp – Chilled Milk

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RASFF -Aeromonas hydrophila and Aeromonas caviae in chilled milk from Germany in Germany

RASFF Alert – Botulinum Toxin – Bovines Producing Milk

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RASFF – botulinum toxin in bovines producing milk from Belgium in Belgium