Better ways to monitor beaver fever

The current approach in the U.S. water industry for monitoring Cryptosporidium and Giardia has weaknesses that have contributed to the difficulty of interpreting resulting data. This often leads to potentially significant and dangerous misinterpretation. The purpose of this paper is to summarize information on which the conflicting conclusions on the occurrence and distribution of Cryptosporidium and Giardia have been based.

giardia_lambliaEffort is made to determine the most plausible and supportable interpretation. The objective is to provide a basis for rethinking the current approach to monitoring and management of Cryptosporidium and Giardia in water.

The importance of measuring recovery efficiency and reporting measurements of these organisms in terms of concentration to any quantitative application is emphasized. Data presentation to illustrate critical features of organism concentration levels and variation is reviewed. Analysis of major data sets resulting from the U.S. Environmental Protection Agency Information Collection Rule Supplemental Survey (USEPA ICR SS) and the Long-Term 2 Enhanced Surface Water Treatment Rule (LT2) monitoring and other previously published relevant data sets is presented to illustrate key features of Cryptosporidium and Giardia occurrence in surface water and their universal geographic distribution. Current thinking emphatically requires revision.

Cryptosporidium and Giardia in water: reassessment of occurrence and significance

ASCE

Jerry E.Ongerth

http://ascelibrary.org/doi/abs/10.1061/(ASCE)EE.1943-7870.0001161

Faster, better way to detect salmonella in meat, chicken

In a newly published study, researchers artificially contaminated food with salmonella. They then tested the food samples using Salmonella-specific antibodies combined with a unique signal amplification technique. Their test found salmonella present after 15 hours and removed other microorganisms that sometimes clutter laboratory results. This is shorter than the two to three days it takes to detect salmonella in a culture, the study shows.

salmonella“The test has great potential as a simple monitoring system for foodborne pathogens in food samples, which can improve food safety and public health,” said Soohyoun Ahn, a UF/IFAS assistant professor of food science and human nutrition and lead author of the study. “Even with all the strategies used to minimize contamination of beef and poultry, they are still one of the major food vehicles for salmonella.”

The test would be suitable for any government research laboratory or industry that routinely tests for Salmonella, Ahn said.

Ahn sees the salmonella test showing similar potential for faster detection of other pathogens you can get from eating certain contaminated foods. A similar test has been developed for E. coli in milk and ground beef, and it performed well, she said.

The study is published in the Journal of Food Safety.

 

On Dauphin Island, FDA scientists work to keep seafood safe

I love it when scientists and regulators pick up the microphone – or keyboard – and explain what they do.

I’ve had the pleasure of working with a couple of military-backed food safety types, as well as those dispatched from Fort Riley in Kansas.

gulf-seafood-lab-1-300x225These friendships endure, and I hope they’ve learned a fraction of what I’ve learned from them.

Capt. William Burkhardt III, Ph.D, Director of FDA’s Division of Seafood Science and Technology, writes that on a barrier island in the Gulf of Mexico, two dozen scientists and staff in the FDA’s only marine research laboratory have one common goal: to keep consumers safe from contaminated or unsafe seafood.

I am the director of the FDA’s Gulf Coast Seafood Laboratory (GCSL) on Dauphin Island, Alabama, where we detect chemical and biological hazards and work to reduce the likelihood of illness associated with seafood. In early August, the agency invited U.S. Rep. Robert Aderholt to tour the facility and see our work first-hand. Rep. Aderholt represents Alabama’s Fourth Congressional District and chairs the House Appropriation Committee’s Subcommittee on Agriculture, Rural Development, Food and Drug Administration, and Related Agencies.

At the GCSL, we use the latest technology to detect and identify things that can potentially contaminate seafood. There are drug and chemical residues that may be present from the use of antibiotics and other chemicals in aquaculture production. There are also petrochemicals from off-shore drilling.

There are marine biotoxins that occur naturally, such as harmful algal toxins that go up the marine food chain and eventually get into fish. There are bacteria that occur naturally in marine waters, such as vibrios, that can cause serious, even deadly, illnesses. And there are viruses, such as the norovirus, in marine water that are ingested by shellfish.

We routinely test a wide array of samples from public and private sources, and work closely with FDA’s compliance and enforcement teams in and out of the country so that action can be taken when appropriate.

Our scientists are often brought in when a natural or man-made disaster threatens to contaminate fish or an outbreak is tied to seafood. We’re involved right now in the response to an outbreak of hepatitis A in Hawaii tied to imported scallops, providing microbiological support to identify the virus that has sickened more than 200 people.

When the Deepwater Horizon oil rig exploded in 2010, spilling an estimated 4.9 million barrels of oil into the Gulf of Mexico, we staffed sampling locations. A year after that spill, we allayed the concerns of fishermen participating in the Alabama Deep Sea Fishing Rodeo tournament, billed as the largest fishing tournament in the world. FDA’s Office of Regulatory Affairs set up a mobile laboratory in our parking lot and together we tested samples that fishermen brought in, working round-the-clock for two weeks. We were able to assure the fishermen that there was no oil or dispersants in their fish.

In 2005, we were heavily involved in the response to Hurricane Katrina, in which there were concerns that chemicals would be swept into the Gulf and then into the fish. We deployed staff to sample crabs, shrimp and other seafood and send them by courier back to our labs. Ultimately, we found some elevated levels of bacterial contamination, but that dissipated relatively quickly during the time in which the area was closed to fishing.

We are also invited by other countries to assist in emergency response. For example, six years ago we traveled to Chile after an earthquake there and used our technology to detect norovirus in the drinking water.

When Haiti was hit with a cholera outbreak in 2010, we responded in collaboration with the Centers for Disease Control and Prevention. Our tests found cholera in seafood collected from Port au Prince. These findings were used to tighten recommendations on the movement of ballast water in and out of ships to minimize transmission of the outbreak.

We work with the seafood industry to find practical solutions to common problems. For example, we’re working with oyster fisherman to identify strategies to control bacterial (vibrio) growth. And we’ve advised barracuda fishermen to avoid certain parts of the Caribbean where the fish are vulnerable to biotoxins.

As I showed Rep. Aderholt around our labs, it was a good opportunity to reflect on the important work we do here and the impact we have. Whether it’s in the United States or overseas, we want to be known as a group of scientists that helps people everywhere enjoy seafood safely.

 

E. coli in Scotland: FSS doubles down and says all Errington Cheese products pose a risk to public health

According to Lizzy Buchman of The Scotsman Food Standards Scotland (FSS) issued an alert to all Scottish councils calling for all Errington Cheese products to be removed from the shelves as they could pose a risk to public health. The outbreak is being linked to another outbreak in Angus where a playgroup has been temporarily shut down due to a small number of cases.

double-downThe South Lanarkshire-based firm has already been forced to take two of cheeses off the market following a wave of E. coli cases linked to a batch of Dunsyre Blue cows milk cheese and another batch of Lanark White ewe’s milk cheese. A statement released tonight by FSS Scotland said: “Both O157 and non-O157 strains of E. coli have been detected in a number of different types of cheese produced by Errington Cheese Ltd. “Errington Cheese Ltd has not voluntarily withdrawn these products so… FSS as the designated central public food body in Scotland, is initiating the withdrawal of all cheese produced by Errington Cheese Ltd from the marketplace. “FSS and South Lanarkshire Council’s investigations into food safety related to unpasteurised cheese produced by Errington Cheese Ltd are ongoing. Actions will continue to be determined by what is necessary to protect public health and the interests of consumers.” The affected products include Dunsyre Blue, Dunsyre Baby, Lanark Blue, Lanark White, Maisie’s Kebbuck and Cora Linn cheeses.

NHS Tayside said it is investigating linked cases of E.coli O157 affecting a “small number of children” in the region, which has led to a playgroup being temporarily closed. The playgroup, which has not been named by NHS Tayside, has been shut as a precautionary measure while investigations continue. The health board’s Health Protection Team has issued information to parents at the playgroup and an Angus primary school advising them of action to take if they have concerns about their child’s health. A helpline has also been set up on 0800 028 2816. The health board is examining possible sources and routes of transmission and said “necessary control measures” have been put in place to prevent the infection spreading. Consultant in public health medicine, Dr Jackie Hyland, said: “NHS Tayside and Angus Council are together investigating a small number of linked cases of E.coli O157 infection. The risk to the general public remains low and those affected have received appropriate medical treatment and advice.” No one at Errington Cheese was available for comment. The firm said previously that its own extensive testing had shown the cheese was safe to eat.

Another Seattle restaurant fingered as new E. coli source, different from other one

JoNel Aleccia of The Seattle Times reports that for the second time in a week, King County health officials are investigating an outbreak of potentially dangerous E. coli food poisoning linked to a Mexican-style restaurant, but they say the incidents don’t appear related.

memos-mexican-foodAn outbreak of Shiga-toxin producing E. coli O157: H7 (STEC) sickened two people who ate at Memo’s Mexican Food in Seattle’s University District in August, officials with Public Health — Seattle & King County reported Wednesday.

Laboratory testing showed those illnesses were caused by the same strain of the bacteria.

But it’s different from the strain that has sickened 10 other people, including six who ate at the Matador restaurant in Ballard last month.

“These clusters do not appear related to each other,” according to a public health notice posted Wednesday.

An investigation on Monday revealed other factors that could have contributed to the outbreak at Memo’s, 4743 University Way N.E. Those included improper cooling, cold-holding, reheating of potentially hazardous food and the potential for cross-contamination. Because the violations were corrected on site, and there was not an ongoing risk, the restaurant was not closed. Inspectors will return in 14 days to ensure that the site remains safe.

Fewer people barfing? Pathogen versus illness reduction

I’ve commented many times on the machinations of Washington and other capitals, with their proposals, and lobbyists and general isolation from the reality of foodborne illness and ask a basic question: will whatever some social actor is proposing actually lead to few people barfing?

eintsteinquestioneverything(It’s like the question I asked my hockey club: do coaches run practice or do parents? They couldn’t answer so I stepped aside as head coach. Still coach kids and adults, but wearied of the bureaucracy; that’s for other people more skilled at it than I).

Dr. William James writes for meatingplace.com that it’s time for USDA to move from pathogen reduction to illness reduction.

Will requiring testing of an expanded array of products help us achieve a downward trend of illnesses from E. coli O157:H7? Some meat companies think not, because trim from these products is already tested.  FSIS thinks more testing might help because it claims these cuts are increasingly used for grinding by further processors, retailers, and foodservice customers.

In a puzzling statement, FSIS said it intends to focus on Salmonella Dublin. S. Dublin isn’t on CDC’s list of top 10 serotypes causing illnesses.  And according to FSIS, S. Dublin is reported to cause more severe illness than any other meat-borne Salmonella, but it “rarely infects humans.”

So, what is the plan to reduce Salmonella illnesses from beef? “[W]e think one way to get at that is through a performance standard,”Meatingplace.com reports FSIS as saying.

FSIS did mention they were looking at the presence of Salmonella in lymph nodes as a key to a new approach to controlling illnesses.  That’s encouraging.

The FSIS announcement for pathogen controls doesn’t have many new ideas, and is not likely to be effective.  We need a fresh approach.

The goal for FSIS needs to evolve from pathogen reduction to illness reduction.

Matador customer: E. coli illness ‘worst pain you could imagine’

A Seattle woman who became ill in the recent E. coli outbreak described it as the “worst pain you could imagine.”

king_annamarie_kirkpatrick_1473816059517_6036798_ver1-033-year-old Annamarie Kirkpatrick said she ate at Matador in Seattle’s Ballard neighborhood on August 20. She became ill with severe abdominal pain five days later.

“Probably the worst pain you could imagine,” she said. “But just having a doctor tell you we think it’s this, we think it’s this, having six diagnoses in three days was probably the worst.”

Kirkpatrick is one of six people who became ill after eating at the restaurant.

The sign on the door Tuesday said the restaurant was temporarily closed. Health investigators say they are still searching for the source.

“It’s scary to think you go out to a restaurant and order food, and they’re supposed to be the healthiest friendliest places, you would think. And you end up contracting an illness,” Kirkpatrick said.

Tragic: Indiana mom speaks out after toddler’s sudden E. coli death ‘Misdiagnosed five times’

Less than a week after he woke up feeling ill, 2-year-old Grayson Dunham was dead — the victim of an E. coli infection complication that took a grave turn.

e-coli-graysondunham_family_picture_139d18e7d0c0a23e98ad3c5c74f1d824-today-inline-large2xNow, his grieving mom is sharing his story hoping to spread awareness so that other families don’t have to go through a similar ordeal.

“It is a parent’s worst nightmare,” Kayla Dunham, 25, who lives in Sheridan, Indiana, told A. Pawlowski of Today. “He had never been sick… When you think of things happening, you think of severe illnesses like cancer or car accidents. You don’t think of E. coli.”

The family had been enjoying the summer, visiting a state fair, going to a petting zoo and eating out last month, when Grayson suddenly started vomiting and experiencing diarrhea on the morning of Aug. 10.

Doctors couldn’t settle on an exact cause, Dunham said. At first, the family was told it was stomach flu, then indications that the boy’s intestines may have been folded over each other, then possible problems with his appendix. As time went by, Grayson started having intense abdominal pain and bloody diarrhea.

“We were misdiagnosed five times before they said, yes this is HUS,” she recalled.

HUS, short for hemolytic uremic syndrome, can strike after an E. coli infection of the digestive system, according to the National Institute of Diabetes and Digestive and Kidney Diseases. It destroys red blood cells and clogs the kidneys’ filtering system. HUS is the most common cause of acute kidney injury in kids.

Grayson’s stool sample ultimately tested positive for Shiga toxin-producing E. coli, Dunham said. The family tried to figure out how he could have been infected: Was it the petting zoo? The restaurants they visited? Produce that his mom bought at a supermarket? The local health department told Grayson’s parents they may never know the source.

Grayson finally ended up in the intensive care unit of a children’s hospital in Indianapolis, Dunham said. Doctors told his parents he was stable for the night and urged them to take a nap in a nearby room, but the family was soon jolted by news the boy was deteriorating. His hemoglobin — a protein in red blood cells that carries oxygen — had dropped from the normal range to zero, his mom said.

Doctors were not able to get his heart pumping on its own and performed CPR for an hour and 45 minutes, but to no avail, she recalled. Grayson passed away at 4:30 in the morning on Aug. 15.

“My heart is in shock, I’m numb, and I don’t have words for what even happened,” Dunham wrote on Facebook. Doctors still don’t know why her son deteriorated so suddenly, she said.

Everyone’s got a camera: Subway employee zapping bugs near exposed food edition

I got one of those tennis-racket-shaped zapper things from Amy, but I sorta broke it, being aggressive like one would with a flexible flyswatter.

A Subway restaurant in Franklin, Indiana is receiving a lot of attention online after an employee allegedly “zapped” bugs in the sandwich-making area, and a customer caught the entire incident on video.

belushi-zit_-food_-fight_Justin Clemons posted the video to Facebook on Monday evening. He said he took his children out for dinner to the Subway located at 2120 East King Street after a golf match.

“So I sit down and start eating and my back is faced to (the employees) and I start hearing all the zapping sounds,” Clemons said. “I couldn’t figure out what it was until my 13 year old said, “I’m pretty sure they are zapping the bugs that are above it.’”

Clemons then turned around and witnessed what his son thought was happening, really was.

“The first reaction was I cannot believe this is actually happening,” he said. “My second one is if I don’t record this I don’t think anyone in their right mind will believe this is happening right now.”

So Clemons turned on his phone and started recording the incident.

“I was pretty much in shock and so were the kids,” Clemons said. ““It was directly over the food itself…  Nothing was closed that I could see and he was just immediately taking the racket right over the food and zapping them.”

A Subway spokesman released a cookie-cutter statement Tuesday night:

Food safety is our top priority. All Subway restaurants are individually owned and operated. As soon as the restaurant owner was made aware of the situation, he immediately took action by closing his restaurant and discarding all open products. He has contracted a professional cleaning service to ensure that the restaurant is in top working order.

Subway also commented on the video Clemons posted to Facebook, apologizing for the incident.

“We truly regret you had this experience Justin, and we are looking into this right now,” the company wrote. “Food safety is our top priority, and we are working with the franchisee to address immediately. If you could send us a Private Facebook message with your contact information, we’d like to reach out to you personally, or if you prefer you can link here http://bit.ly/1XrM5lE for our Care Team. Thank you Justin.”

Follow my lead: Food service needs safety champions

This paper addresses the challenge of reducing food safety errors in the foodservice industry.

dragnetResults of a survey of 255 full-time food service professionals supported our proposed causal chain of impact that runs from “leader behavioral integrity for food safety” (the extent to which leaders/supervisors consistently enact and enforce food safety rules) through the proportion of food safety errors reported, through “error management” (an integrated set of practices involving error detection, correction, analysis, prevention and learning), finally to reduced food safety violations.

Specifically, this study found the mediating effect of error reporting between leader behavioral integrity for food safety and error management; and the mediating effect of error management between error reporting and food safety violations.

Results suggest that ongoing support and incentivizing of supervisors’ behavior may be a critical supplement to skill-based training of employees in reducing food safety errors and thus violations. The study found that high leader behavioral integrity for food safety can improve error reporting and error management leading to a reduction in the risk of foodborne illness, which is the ultimate goal of a food safety training program.

It is recommended that managers serve as role models by following proper food safety practices and reporting errors themselves. A manager who consistently enacts food safety priorities and protocols conveys more clear information about positive organizational priorities for safety, provides clearer incentives for safety behaviors, models desired attitudes, and enhances employee trust and thus willingness to learn; which is critical for the success of food safety programs.

Reducing food safety errors in the United States: Leader behavioral integrity for food safety, error reporting, and error management

International Journal of Hospitality Management

Volume 59, October 2016

Priyanko Guchait, Jack A. Neal, Tony Simons

http://www.sciencedirect.com/science/article/pii/S0278431916301323