Food-borne bacteria evolving, becoming more dangerous

Don't eat poopUSA Today reports that the first rule of public health is one most of us learn in kindergarten: Don't eat poop.

But that's what the people were eating who were struck down with E. coli in the late summer outbreak tied to bagged spinach, California health officials now say.

There was deadly E. coli O157:H7 in water samples taken on the Salinas Valley ranch where the spinach was grown, in wild pigs that rampaged through the fields, in cattle and calves that grazed nearby, and on cow manure in adjacent pastures, says Kevin Reilly, deputy director of prevention services for the California Department of Health Services.

"It's not unusual or unexpected that we'd find O157:H7 in the environment where those species exist," Reilly says. Three people died and more than 200 others were sickened in the outbreak that spread to 26 states.

What is the consumer's role in dealing with food-borne illnesses?

foodUSA Today reports that for starters, the problem has been accelerated by the American appetite for fruits and vegetables — much of it raw as the market grows for packaged fresh greens.

Americans ate 10 times more spinach in 2005 than in 1970, with much of the growth in ready-to-eat bagged spinach and baby spinach, according to the Department of Agriculture's Economic Research Service.

Americans have increased consumption of all produce — up 25% between 1970 and 2004.

Raw produce skips what Linda Harris, an expert on food safety at the University of California-Davis, calls "the kill step." That's cooking that knocks out any pathogens that may have hitched along.

And that's a problem, because fruits and vegetables are more likely to carry disease than they were 30 years ago, says the Centers for Disease Control and Prevention. "In the 1970s, it was two outbreaks a year. In the 1980s, it was seven a year. And in the 1990s, it was 16 a year," says Patricia Griffin, a doctor who studies food-borne and diarrheal illnesses at the CDC. Figures for the past five years are being compiled, she says.

New foodborne outbreak in U.S.

salmonellaCanada.com reports that a salmonella outbreak potentially linked to produce has sickened at least 172 people in 18 states, health officials said Monday.

Health officials think the bacteria may have spread through some form of produce; the list of suspects includes lettuce and tomatoes. But the illnesses have not been tied to any specific product, chain, restaurants or supermarkets.

No one has died in the outbreak, which stems from a common form of salmonella bacteria. Eleven people have been hospitalized, health officials said.

E-beam eliminates E. coli in ground beef, researchers say

E-beamFood Production Daily reports that low levels of irradiation can reduce pathogen levels, including the potentially deadly E. coli, in carcasses used for ground beef, claim researchers.

A low dose, low penetration electron beam (E-beam) irradiation penetrating 15 millimetres below the surface of a carcass can effectively reduce pathogens, found Agricultural Research Service (ARS) scientists at the Roman L Hruska Meat Animal Research Centre in the US.

Pathogens are most prevalent on the surface of a carcass, but the risk of sub-surface contamination is high in ground beef because it is mixed so thoroughly.

Penetrating meat with E-beams instead of current methods of washing the surface of carcasses could therefore be more effective in reducing pathogens. 

Chemists Decode Bacterial 'Conversations' In Effort To Block Deadly Infections

food poisoning researchScience Daily reports that eavesdropping can sometimes be a good thing. Researchers are learning how to listen to a wide range of bacterial conversations -- the chemical signals bacteria use to communicate with each other -- in an effort to design new compounds to thwart deadly infections, particularly those involved in the growing problem of antibiotic resistance, according to an article scheduled for the Oct. 23 issue of Chemical & Engineering News, ACS' weekly newsmagazine.

C&EN associate editor Sarah Everts shows that researchers have made significant strides in decoding bacterial conversations, also known as quorum sensing, a phenomenon first discovered in the 1970s by a group of biologists who were exploring bioluminescent bacteria found in squid.

County looking into possible E. coli outbreak

E. coliThe Chetek Alert reports that the Barron County Department of Health and Human Services has received information about a possible E. Coli foodborne illness outbreak, possibly related to a Habitat for Humanity fund-raising dinner on Thursday, Oct. 19.

Kaye Thompson, Barron County Health Officer, and Randy Wilson, Barron County Sanitarian, are asking that any person that participated in the fund-raising dinner and is experiencing symptoms such as diarrhea, abdominal cramps, vomiting or fever to contact the Barron County Department of Health and Human Services at (715) 537-6580, and to see a physician.

"We're working on it right now, but we are in the early stages," says Thompson. "We need to get the word out so people will call us. It's pretty important."

Pregnant Women: Keep Food Safe

pregnant womanAn article by NBC Miami reminds consumers that when women are pregnant, their risk of developing foodborne illness increases and even a mild case of food poisoning can have serious consequences. Protect yourself and your unborn infant from foodborne illness by practicing good food safety habits.

Pregnant women should take special precautions when shopping for, handling, preparing and storing food since you are more vulnerable to foodborne illness. Do not eat meats, poultry, seafood and eggs that are raw or undercooked. Also, unpasteurized dairy products like raw milk and some imported cheeses can pose safety threats to pregnant women.

Omaha Beef Company Recalls Ground Beef Products for Possible E. coli Contamination

ground beef recallOmaha Beef Company, Inc., a Danbury, Conn., firm, is recalling approximately 1,680 pounds of ground beef products that may be contaminated with E. coli O157:H7, the U.S. Department of Agriculture's Food Safety and Inspection Service announced yesterday.

The products subject to recall include:

10-pound boxes of "HAMBURGER PATTIES, OMAHA BEEF CO., INC."

Five- and 10-pound bags of "HAMBURGER, OMAHA BEEF CO., INC."

Each package bears the establishment number "Est. 2769" inside the USDA mark of inspection, as well as the case code, "101861."

The problem was discovered through routine FSIS microbiological testing. FSIS has received no reports of illnesses associated with consumption of these products.

'Stomach flu' can be serious

norovirusDoctors call it "acute gastroenteritis." To many other people, it's "stomach flu" (though real influenza is a respiratory, not digestive, illness). Whatever you call it, a sudden illness involving diarrhea, vomiting or both is a miserable thing. And occasionally — as demonstrated by the recent deaths linked to E. coli-tainted spinach — it can be a dangerous thing.

But, as USA Today printed in an article today, in the words of Chesapeake, Va., gastroenterologist Patricia Raymond: "The GI (gastrointestinal) tract has a limited palette of expression. You vomit, you cramp, you have diarrhea."

So how do you tell a really bad bug from one that is merely unpleasant? How do you tell one that came from food from one you picked up from a doorknob or a baby's diaper? In short, when should you worry?

Usually, doctors say, both worry and detective work are unnecessary: Whether the culprit is viral or bacterial, food-borne or not, you'll most likely recover in a couple of days and won't need medical attention. If you suspect the Thanksgiving stuffing, it's nice to let other family members know. And you should change your cooking habits (or your caterer). But there's rarely a need to send the whole clan in for a battery of tests and treatments.

Putting the wash before the cart

shopping cartThe an article in today's Star Tribune reports the grocery cart you're putting your food, handbag and toddler into is full of germs.

Consider the handle. It's been touched by untold numbers of hands that have changed diapers, mopped up runny noses, picked up packages of raw chicken and meat, and been coughed on, sneezed in and drooled on.

Bacteria and viruses such as E.coli, staphylococcus, salmonella and influenza can live on grocery carts, scientists say. Though they caution not to get too panicked about the thought, experts say it is possible to catch something from the carts if conditions are right.