Category Archives: E.coli

USA – Outbreak Investigation of E. coli Linked to Ground Bison from Northfork Bison Distributions, July 2019


September 13, 2019

The U.S. Food and Drug Administration (FDA), along with the Centers for Disease Control and Prevention (CDC), state and local partners in the U.S., and with the support of the Canadian Food Inspection Agency (CFIA), investigated a multistate outbreak of E. coli O121 and E. coli O103 illnesses likely linked to ground bison supplied by Northfork Bison Distributions Inc. of Saint-Leonard, Québec, Canada.

On September 13, 2019, CDC announced that the outbreak appears to be over.

During the investigation, FDA and CDC analyzed traceback and epidemiological information to determine that ground bison supplied by Northfork Bison Distributions Inc. was the likely cause of the illnesses. FDA laboratory analysis of bison patties packed by the firm on February 26th, 2019, confirmed the presence of one of the outbreak strains of E. coli.

Northfork Bison Distributions Inc. was forthcoming with information to aid in the investigation, and publicly announced a voluntary recall on July 16, 2019. This recall included ground bison meat and bison patties produced between February 22 and April 30, 2019.

FDA regulates bison meat because the authority is not assigned specifically to the United States Department of Agriculture’s (USDA) Food Safety Inspection Service (FSIS) in the Federal Meat Inspection Act (FMIA).


Because the product is frozen and may still be in freezers, distributors, retailers and restaurants should not distribute, use or serve ground bison (including bison burgers) recalled by Northfork Bison Distributions Inc.

Consumers should not eat products prepared using recalled ground bison (including bison burgers) sold under the Northfork Bison label including bison burgers sold to retailers in 4 x 4-ounce packages with expiration dates through October 8, 2020.

Buffalo Burger Canadian Bison Meat

RASFF Alerts – E.coli – Chilled Mussels – Grand Livarot AOP Cheese – Chilled Beef – Live Clams- Dried Anchovies

Last two weeks catch up.


RASFF – too high count of Escherichia coli (790 MPN/100g) in chilled mussels from the Netherlands in the Netherlands

RASFF – too high count of Escherichia coli (1500000 CFU/g) in grand Livarot AOP (cheese made from pasteurised milk) from France in France

RASFF – Escherichia coli (in 5 out of 5 samples) in chilled beef from Italy in Italy

RASFF – too high count of Escherichia coli (up to 16000 MPN/100g) in live clams (Chamelea gallina) from Italy in Italy

RASFF – high counts of Enterobacteriaceae (up to 7.8 x 10^4 MPN/g) and of Escherichia coli (up to 1.1 x 10^3 MPN/g) in dried anchovies from Vietnam in the UK

USA -General Mills Recalls Five Pound Bags of Gold Medal Unbleached All Purpose Flour – E.coli O26


General Mills announced today a voluntary national recall of five-pound bags of its Gold Medal Unbleached All Purpose Flour with a better if used by date of September 6, 2020. The recall is being issued for the potential presence of E. coli O26 which was discovered during sampling of the five-pound bag product. This recall is being issued out of an abundance of care as General Mills has not received any direct consumer reports of confirmed illnesses related to this product.

This recall only affects this one date code of Gold Medal Unbleached All Purpose Flour five-pound bags. All other types of Gold Medal Flour are not affected by this recall.

Consumers are asked to check their pantries and dispose of the product affected by this recall. Consumers who have had to discard products covered by this recall may contact General Mills Consumer Relations at 1-800-230-8103 or visit Link Disclaimer.

Guidance from the Food and Drug Administration (FDA) and the Centers for Disease Control (CDC) continues to warn that consumers should refrain from consuming any raw products made with flour. E. coli O26 is killed by heat through baking, frying, sautéing or boiling products made with flour. All surfaces, hands and utensils should be properly cleaned after contact with flour or dough.

This voluntary recall includes the following code date currently in stores or consumers’ pantries:

Gold Medal Unbleached All Purpose 5LB Flour
Package UPC 016000 196100
Recalled Better if Used by Date 06SEP2020KC

Although most strains of E. coli are harmless, others can make you sick. E. coli O26 is a potentially deadly bacterium that can cause bloody diarrhea and dehydration. Seniors, the very young, and persons with compromised immune systems are the most susceptible to foodborne illness.

Any consumers concerned about an illness should contact a physician. Anyone diagnosed by a physician as having an illness related to E. coli O26 is also urged to contact state and local public health authorities.

Research – Comparison of pH effects on ohmic heating and conventional heating for inactivation of Escherichia coli O157:H7, Salmonella enterica Serovar Typhimurium and Listeria monocytogenes in orange juice

Science Direct


Effect of pH on ohmic heating compared to conventional heating was investigated.

Adjusting pH has significant effect on the heating rate of ohmic heating.

Unusual tendency of pathogen inactivation was identified in ohmic heating.

Quality aspects of samples were not severely degraded regardless of pH.


The objective of the current study is to identify the influence of acidity on ohmic heating compared to conventional heating for inactivation of food-borne pathogensin orange juice. For conventional heating, the heating rate was not significantly different (P > 0.05) regardless of pH and pathogens were inactivated more effectively at lower pH. However, different patterns were observed for ohmic heating. Although temperature and electrical conductivity were not greatly affected by lowering pH, temperature increased more rapidly with increasing pH due to higher electrical conductivity. Also, the inactivation patterns were significantly different (P < 0.05) from conventional heating. While Salmonella Typhimurium was inactivated most rapidly at pH 2.5, Escherichia coli O157:H7 and Listeria monocytogenes were inactivated most rapidly at pH 4.5. When pathogens were exposed to each heating method at a fixed temperature, additional effects of ohmic heating were not observed. Also, the overall quality of orange juice subjected to ohmic heating was not greatly affected at any pH level. Therefore, increasing as well as lowering pH can also be considered effective ways to optimize pasteurization of orange juice when using ohmic heating. The different characteristics of ohmic heating compared to conventional heating indicate the necessity of a new approach.

Research – Antimicrobial resistance profile of Escherichia coli isolates recovered from diarrheic patients at Selam Health Center, Addis Ababa, Ethiopia

Academic Journals


Antimicrobials have been playing an important role in preventing illness and death associated with infections due to bacteria. However, the emergence and spread of resistance by pathogens have decreased the effectiveness of the commonly prescribed antimicrobials. Intestinal Escherichia coli are among bacterial pathogens that are endowed with such resistance traits because they are important source and reservoir of genes that encode antimicrobial resistance. To determine the antimicrobial resistance profile of fecal isolates of E. coli from diarrheic patients. Stool samples were collected consecutively from 100 individuals who visited Selam Health Center during the study period, April to June 2018. Samples were collected and transported under sterile condition to the National Clinical Bacteriology and Mycology reference Laboratory, Ethiopian Public Health Institute. The samples were streaked on MacConkey agar and incubated overnight at 37°C. E. coli isolates were further confirmed using conventional biochemical tests. Antimicrobial susceptibility status was determined using the disk diffusion method on Mueller Hinton agar as recommended by the Clinical Laboratory Standard Institute. The raw data was compiled and entered to spreadsheet and analysis was done using SPSS Version 20 with p-value ≤0.05 considered statistically significant. Out of the 100 patients, 43 were female and the rest were male. Confirmed E. coli were isolated from 73 individuals. Antimicrobial susceptibility testing showed that E. coli isolated in this study were highly resistant to trimethoprim-sulfamethoxazole 49 (67.1%) and amoxicillin-clavulanic acid 47(64.4 %). No isolates showed resistance to gentamicin and tobramicin.  Of all the isolates, 11(15.1%) were multidrug resistant. No association was observed between antimicrobial resistance status and sex of individuals included in this study. However, there was an association between age and resistance patterns. Resistance to commonly prescribed antibiotics among E. coli isolated in this study was high and a considerable proportions of the strains were multidrug resistant. This is an indication for an alarming rate of resistance of intestinal E. coli to first line antimicrobials. To reduce the problem, regular monitoring and education for the community are very important.




Petting zoos may seem like the perfect opportunity to introduce kids to farm animals, but these creatures may possibly putting them in harm’s way of… germs. To what degree should parents be concerned? This past summer, a two-year-old child died after coming into contact with animals at the San Diego County Fair. Three other children under 13 reported contracting illnesses from the same location.

The source of the illness? E.Coli linked to contact with the fair’s animals.

Petting zoos are fairly popular. In summer and fall months, they’re a highlight at local fairs. Later in the year, they’re featured in festivals, pumpkin patches, schools, aquariums, even farmers’ markets. This family-friendly activity can turn dangerous when children come into contact with bacteria that causes serious illness.

According to the Centers for Disease Control and Prevention (CDC), “Every year, many people get sick after visiting an animal exhibit. From 2010-2015, about 100 outbreaks of illness in people linked to animals in public settings like zoos, fairs, and educational farms were reported to public health officials.”

Denmark – ‘No outbreak’: Danish medic after two children die from E. Coli STEC/VTEC complications

The Local

Two children – one on the island of Funen and another in the Copenhagen area – died due to a rare complication related to VTEC, a strain of the E. Coli bacteria.

Both children died of kidney failure, but the two tragic cases are not connected. A third child also contracted kidney failure but survived, DPSA said.

A consultant doctor and head of department at Copenhagen infectious disease research institute SSI stressed that the cases were not evidence of an outbreak and that the number of cases was not improbable.

“At this time, we have knowledge of three cases of kidney failure from August to September. That is not more than we would expect at this time of year. Fortunately there is nothing to suggest they are connected,” Tyra Grove Krause said.