The Top 10 Foodborne Illness Outbreaks in the US

The recent E. coli 0104:H4 outbreak of gastroenteritis in Europe that sickened thousands and killed over 20 people was one of the largest foodborne disease outbreaks in the world (for the latest updates check out this article). This prompted my colleagues over at Onlinecertificateprograms.org to post an article entitled “10 Worst Food Contamination Outbreaks” that outlines the most serious foodborne illness to afflict the US.

Some of you may remember some of the more highly publicized ones including the “Jack in the Box” and “Sizzler” E. coli outbreaks in 1993 and 2000 respectively. While E. coli is still on everyone’s mind, the other usual suspects including Salmonella, Listeria and botulism are also featured!

 Here is the list! 

  1. Washington Packing Corporation, Botulism (1963): After two women died from botulism due to eating a bad can of A&P tuna packed by the Washington Packing Corporation, health authorities began investigating the company's foods, eventually discovering that the bad tuna had been shipped and stocked in major population centers throughout the Midwest. Wary consumers immediately stopped purchasing tuna, causing the then $277 million industry to suffer a 35% decrease in sales. The families of the two women were paid $226,500 by Washington, which was shut down after the incident.
  2. Skewer Inn Restaurant, Botulism (1983): Botulism struck again 20 years after Washington, resulting in one death. The oversight occurred at Peoria, Illinois' Skewer Inn, a popular restaurant located in the constantly-busy Northwoods Mall. Each victim ate beef patty-melts containing contaminated onions, later experiencing symptoms such as blurred vision, slurred speech, trouble breathing and paralysis. Overall, 28 people were hospitalized, 12 of whom required ventilatory support for varying periods of time.
  3. Jalisco Cheese, Listeria (1985): The deadliest food contamination outbreak in US history was caused by listeria, a bacteria found in sewage, soil, stream water and plants that manifests through fever, aches and diarrhea. Many of the 142 Southern Californians who fell ill from Jalisco's Mexican-style soft cheese suffered dire consequences — 48 died including 19 stillbirths and 10 infants. When an investigation was completed, the bacteria were traced back to poorly pasteurized milk used to make the cheese at an Artesia plant.
  4. Hillfarm Dairy, Salmonella (1985): Consumers would've been best-advised to avoid dairy products altogether in 1985. The Hillfarm Dairy debacle wasn't as severe as the Jalisco debacle, but it was far more widespread, as 16,284 cases of food poisoning due to salmonella were confirmed and possibly 200,000 cases altogether existed in the Midwest. Two deaths resulted, and as many as 12 may have occurred due to two batches of tainted milk produced in Melrose Park, Ill.
  5. Jack in the Box, E. coli (1993): Highly publicized and nearly catastrophic for Jack in the Box, the 1993 E. coli outbreak in the Pacific Northwest could've been prevented if the fast food chain had selected better meat, or at least cooked the contaminated meat at the right temperature. According to reports at the time, the patties eaten by the victims contained fecal matter and weren't cooked at 155 degrees Fahrenheit as mandated by Washington state law. Four children died and more than 700 others became sick, prompting the USDA to enforce stricter regulations, and Jack in the Box to overhaul its food safety procedures.
  6. Sizzler, E. coli (2000): One of the nation's largest steakhouse franchises experienced a crisis in 2000 when an E. coli O157:H7 outbreak in Milwaukee, Wis., originating from two restaurants in the area, sickened 65 people and killed a three-year-old girl. Health officials discovered that raw meat shipped from the Excel meat packing facility in Colorado came into contact with food eaten by the victims. According to Sizzler, it required all of its restaurants to cook beef entrees at the 160-degree temperature recommended by the US Food and Drug Administration.
  7. Pilgrim's Pride, Listeria (2002): At the time, it spurred the largest meat recall in US history. The listeria outbreak of fall 2002 ended with 46 illnesses, three miscarriages and the deaths of seven people, causing Pilgrim's Pride, then the second-largest poultry company in the US, to suspend operations at its Franconia, Pa. plant. From there, products were shipped to grocery stores, food service institutions and restaurants around the country, specifically affecting Connecticut, Delaware, Maryland, Michigan, New Jersey, New York, Ohio and Pennsylvania.
  8. Chi-Chi's restaurant, Hepatitis A (2003): Typically a problem suffered by residents of developing countries where personal hygiene standards are poor, a hepatitis A outbreak is a problem most Americans don't worry about facing. Thanks to a batch of green onions used in food at Chi-Chi's Mexican restaurant in Beaver, Pa., more than 660 people fell ill and four people died in the nation's worst outbreak of the infectious disease. Almost all of the victims contracted it by eating mild salsa and cheese dip, which contained raw onions that were traced to Mexico.
  9. Natural Selection Foods, E. coli (2006): Veggie eaters across America halted their consumption of spinach in late 2006, as reports surfaced that certain helpings were contaminated with E. coli O157:H7. In early fall, 199 people were infected in 26 states — 31 of whom suffered kidney failure — and three people died. At fault was a farm in San Benito County, Calif., where CDC investigators suspected irrigation that was possibly contaminated from cattle feces, originating from nearby Paicines Ranch, came into contact with spinach fields.
  10. Peppers and Tomatoes, Salmonellosis (2008): Jalapeno peppers, serrano peppers and tomatoes contributed to the 2008 United States salmonellosis outbreak, which proved difficult for the CDC to trace. Ultimately, investigators discovered the strain in irrigation water and serrano peppers originating from a packing facility in Nuevo Leon, Mexico and grower in Tamaulipas, Mexico. It infected 1,442 people in 42 states, with the most incidences occurring in Texas (384). At least one death was attributed to the outbreak.

Until next time...

 Good Luck and Good Eating!!!!!!!!

 

In the News Again: Salmonella!

As many of you know, I am a big Salmonella fan (not really that strange for a microbiologist who did his PhD thesis on Salmonella gastroenteritis). However, this notorious food-borne pathogen has once again made its way into the US food supply chain. 

This time, an Iowa-based egg producer, Wright County Egg, is at fault. This outbreak which began in May and sickened hundreds of American has resulted in the recall of over 380 million eggs! Ironically, the outbreak started just weeks before new government safety rule went into effect to reduce the risk of Salmonella infection of eggs. Public health officials believe that this is the largest outbreak of salmonellosis of poultry-related products in recent years.

Like most other nationwide Salmonella outbreaks, this one is a result of poor sanitary conditions and inadequate quality control at the production facility. Wright County Egg had repeatedly been cited for violating US Food and Drug Administration regulations. Yet, the company was allowed to continue operations without fixing the problems identified by FDA inspectors and regulators.

For those of you who may not know, chickens are frequently infected by Salmonella spp and can be found in the feces from infected animals. Chickens are not the cleanest of animals and fecal contamination is expected and common at most egg laying and processing facilities. If adequate health, sanitary and quality control procedures are assiduously adhered to at these production facilities, the likelihood of Salmonella infection of poultry products is very low. Conversely, the incidence of infections is sure to increase if these rules and regulations are not adhered to.

Once again we are in the midst of another major “food poisoning” outbreak, because a company cut corners to reduce costs and failed to adhere to federally mandated Good Manufacturing Practices for foods and related products.

As Woody Allen quipped in the closing moments of his film “Annie Hall”....”Most of us need the eggs.” Truer words were never spoken!

Until next time....

Good Luck and Good Job Hunting (try microbiology)

 

Another Day--Another Salmonella Outbreak

Tainted pistachio nuts are the culprit for this week’s Salmonella outbreak.  Fortunately, Kraft Foods’ quality unit was doing its job and was able to alert consumers about the problem before the outbreak reached epidemic proportions. At present, there are only two suspected cases of Salmonella gastroenteritis that may be linked to tainted pistachios. The contamination has been traced back to a California company which, according to reports, is the second leading producer of pistachios in the US.

As I have mentioned several times before, Salmonella outbreaks are nothing new and not out of the ordinary in the food industry. However, what is new is the growing lack of regulatory compliance that seems to be pervasive at American food manufactures. Many blame declining food safety on the US FDA’s lack of trained inspectors. While this may play a role, I believe that the real problem lies with the failure of many food industry executives to make a commitment to quality outlined in FDA’s Current Good Manufacturing Practices (cGMPs). 

I have been teaching cGMP to biotechnology students for the past six years or so.  I always tell them that the regulations are meaningless unless management makes a commitment to quality. And, the only way to accomplish this is by insisting that all manufacturing taking place at a company stringently adheres to all GMP regulations and guidelines. For those you who may not be familiar with cGMPs, they are the minimum regulatory standards that must be met to insure US product (food, drugs and cosmetics) quality and safety.

Over the past decade or so, Americans have grown accustomed to a wide variety of choices when it comes to raw and processed foods. To meet demand, US food manufacturers must source and import fruits, vegetables, spices and other foodstuffs from all over the world. Regardless of the origin of a food source, cGMPs clearly state the onus is on the manufacturer (not the supplier) to perform the necessary tests to insure food safety and quality. The recent spate of Salmonella outbreaks suggests that some food manufacturers are either cutting corners or don’t fully understand what testing is necessary to guarantee food safety. Unless something changes, Americans confidence in the safety of US food supply will continue to wane.

Until next time...

Good Luck and Good Easting (avoid pistachios)

 

Salmonella in the News Again

This may be one of the more notable years for Salmonella food poisoning. First, there was a modest outbreak in the eating clubs at Princeton University and now a larger outbreak in Texas and New Mexico. This is the first time that I can recall in my almost 30 years as a card-carrying food microbiologist that there has been this many highly-publicized cases of Salmonella food poisoning in one year. Although I don’t wish Salmonella gastroenteritis on anybody, it is kind of rewarding that an organism that led to my PhD is making headlines once again. Typically, Salmonella outbreaks are not noteworthy and rarely receive much notice— usually taking a backseat to potentially life-threatening outbreaks of enteropathogenic Escherichia coli.

Like the Princeton outbreak, the exact source of the Salmonella infection is unclear. That said, public health and CDC officials are leaning towards large, raw tomatoes. In 2006, the Food and Drug Administration discovered that consumption of tomatoes in restaurants had caused a salmonella outbreak that affected 21 states. , “until the source of the outbreak is identified federal and local health officials in both states have recommended that infants, the elderly and anyone with an impaired immune system avoid eating Roma and red round tomatoes that are not grown at home or sold attached to the vine.” So far, 40 confirmed cases, with patients ranging in age from 3 to 82, have been reported in New Mexico and Texas since April. To date, 17 people have been hospitalized, but no deaths have been reported.

Molecular analyses indicated that all of the cases in New Mexico and Texas were caused by the same strain, a relatively rare serovar called Saint Paul (6th most common serovar infecting humans). Federal health officials at the Centers for Disease Control in Atlanta, GA fear that this may be the beginning of a large national outbreak of Salmonella gastroenteritis. This is because about 30 cases caused by the Saint Paul strain, have also been reported this year in Arizona, Colorado, Idaho, Illinois, Indiana, Kansas and Utah. Like the New Jersey, Texas and New Mexico outbreaks, the cause of those other outbreaks is under investigation.

Salmonella gastroenteritis generally last between four and seven days, and most people are able to recover without medical (antibiotic) treatment. But, it can sometimes lead to death in immunocompromised adults or young children. Symptoms include headache, nausea, abdominal pain, diarrhea and sometimes vomiting.  Although textbook descriptions of the pathogenesis of Salmonella gastroenteritis generally portray it as a mild illness, I can tell you that people I know (lab mates of mine) who came down with the disease (gee, how did that happen?) suggest otherwise!

I suspect that fecally-contaminated water may be source of the infection. But, then again, it has been almost 30 years since I thought about Salmonella gastroenteritis. That said, I don’t think that you ever forget the essence or minutiae of your thesis work!

For those of you who are interested, the electron micrograph of Salmonella typhimurium shown with this post is from my PhD dissertation. As I recall, the electron micrograph was taken in 1980 and the bacterium shown in the micrograph was grown for 48 hours on nutrient agar . Althought I would like to take credit for the shot (nice pose eh?),  it was taken by Phil Hegge in the Department of Bacteriology at the University of Wisconsin-Madison, my alma mater. if you look closely you may be able to see fimbriae along with the flagella.

Until next time

Good Luck and Good Job Hunting (and remember to wash your tomatoes)!!!!!