Fresh salsa focus of Salmonella search

Elizabeth Weise writes in tomorrow’s USA Today that the Centers for Disease Control and Prevention has asked state and local health officials to focus their investigative efforts on items commonly used in the production of fresh salsa, particularly that made in local restaurants.

Salsas are typically made with tomatoes, onions, jalapeños, garlic and cilantro. They can also include tomatillos and other produce.

The focus does not involve commercially produced salsas. Salsas purchased in cans, jars or plastic containers in the refrigerated section of the supermarket are not being investigated. Fresh-made salsas only, prepared in the home or local restaurants, are the focus.

Tomatoes, originally considered the sole source of the outbreak, remain one of the targeted items, investigators say.

The Food and Drug Administration’s suggestion to avoid red round, Roma and plum tomatoes grown in certain areas is still in effect.

The latest figures for the outbreak are 887 sickened nationwide, with an additional 18 newly confirmed cases. At least 108 people were hospitalized.

Tom Nassif, president and chief executive of Western Growers, which represents produce producers in California and Arizona, said if the outbreak ends up not being associated with tomatoes, growers will have taken a tremendous hit for nothing, and if tomatoes are exonerated, Nassif says growers might ask for financial relief from Congress.

Bill Marler, one of the nation’s leading food-safety attorneys, said the FDA can’t be faulted for acting in the absence of a "smoking tomato" laced with the salmonella bacteria, stating, "Should they have waited until they knew exactly what it was? Well, whose side do they want to come down on: the side of public health and kids or the produce industry?"

I wrote something similar regarding the actions of Ontario government officials after the 1996 cyclospora outbreak (was it California strawberries, no it was Guatemalan raspberries) in the book, Risk and Regulation.

"Once epidemiology identifies a probable link, health officials have to decide whether it makes sense to warn the public. In retrospect, the decision seems straightforward, but there are several possibilities that must be weighed at the time. If the Ontario Ministry of Health decided to warn people that eating imported strawberries might be connected to Cyclospora infection, two outcomes were possible: if it turned out that strawberries are implicated, the ministry has made a smart decision, warning people against something that could hurt them; if strawberries were not implicated, then the ministry has made a bad decision with the result that strawberry growers and sellers will lose money and people will stop eating something that is good for them. If the ministry decides not to warn people, another two outcomes are possible: if strawberries were implicated, then the ministry has made a bad decision and people may get a parasitic infection they would have avoided had they been given the information (lawsuits usually follow); if strawberries were definitely not implicated then nothing happens, the industry does not suffer and the ministry does not get in trouble for not telling people."

I’ll have more to say about this tomorrow.

He said, she said: talking about tomatoes

Since April, 869 persons infected with Salmonella Saintpaul with the same genetic fingerprint have been identified in 36 states and the District of Columbia.

On July 1, 2008, Jonathan D. Rockoff of the Baltimore Sun, and many others, reported that investigators probing the salmonella outbreak that mysteriously keeps infecting Americans have expanded their hunt beyond tomatoes and are looking to see whether other produce may be responsible, federal health officials confirmed yesterday.

It was the strongest indication to date by the Food and Drug Administration and the Centers for Disease Control and Prevention that weeks of focus on tomatoes as the culprit may have been a mistake, something that state health officials and other scientists increasingly fear.

"The tomato trail is still hot. It’s a question of whether other products are getting hotter.”
    Dr. David Acheson, associate FDA commissioner for foods

"If they say it’s not tomatoes, then how many other commodities will be affected? We have a lot of reasons to be angry."
    Tom Nassif, president, Western Growers Association

"Things definitely have to get better. No one in public health and no one in industry can be satisfied how this outbreak was handled."
    Amy Philpott, United Fresh Produce Association

"In a digital age should we still be using paper and pencil to try to figure these things out. It certainly seems illogical at this point that we don’t have a more expeditious way to deal with traceability."
    FDA’s Acheson, wondering whether pushing the food industry to move to computerized record keeping might speed investigations in the future.

"We might have added every other vegetable in the country. This is crazy, absolutely crazy."
    Reggie Brown, executive vice president, Florida Tomato Growers Exchange

"It is like a detective trying to solve a case. We often have to rely on people’s memory of things that are not very memorable, such as what they ate last week or the week before. They may not realize or remember that the things they ate have many different ingredients."
    Robert Tauxe, Centers for Disease Control

There’s a growing misconception in the public that if tomatoes really were to blame, the outbreak would only have lasted six weeks. That’s just not true, he said, pointing to farms that rotate harvests so as to keep producing tomatoes for months.
    David Acheson, FDA’s associate commissioner for foods

"I really think that what Katrina did to FEMA, this salmonella issue is going to do the FDA. They are going to have to learn to be much more prudent in ringing the alarm bell until they determine the source of whatever contamination they may be dealing with.”
    Bob Spencer of West Coast Tomato, Florida

Salmonella in tomatoes or something else?

With no end in sight, Elizabeth Weise of USA Today reports that suspicions are mounting that fresh unprocessed tomatoes aren’t necessarily causing the salmonella outbreak that has sickened 851 people across the U.S., with the latest case beginning June 20.

Robert Tauxe, deputy director of the Centers for Disease Control and Prevention’s division of foodborne diseases, said CDC launched a new round of interviews over the weekend, adding,

"We’re broadening the investigation to be sure it encompasses food items that are commonly consumed with tomatoes.”

Weise reports that if another food is found to be the culprit after tomatoes were recalled nationwide and the produce industry sustained losses of hundreds of millions of dollars, food safety experts say the public’s trust in the government’s ability to track foodborne illnesses will be shattered.

Michael Osterholm of the National Center for Food Protection and Defense at the University of Minnesota, said,

"It’s going to fundamentally rewrite how we do outbreak investigations in this country. We can’t let this investigation, however it might turn out, end with just the answer of ‘What caused it?’ We need to take a very in-depth look at foodborne disease investigation as we do it today."

Jim Prevor, editor of Produce Business magazine, says tomatoes couldn’t have caused an outbreak that has stretched from early April to late June.

"There’s not a field in the world" that produces that long.

If not tomatoes, what else? "Something that people find difficult to remember but which is always served with tomatoes," says Tauxe.

That would put salsa, jalapeño peppers, green onions and cilantro at the top of the list of potential culprits, says Doug Powell, director of the International Food Safety Network at Kansas State University in Manhattan, Kan.

Tomatoes with Salmonella sicken 810 in 36 states

The U.S.Center for Disease Control and Prevention reports that since April, 810 persons infected with Salmonella Saintpaul with the same genetic fingerprint have been identified in 36 states and the District of Columbia.

The number of ill persons identified in each state is as follows: Arkansas (10 persons), Arizona (39), California (10), Colorado (8), Connecticut (4), Florida (1), Georgia (18), Idaho (3), Illinois (78), Indiana (11), Kansas (14), Kentucky (1), Maine (1), Maryland (25), Massachusetts (18), Michigan (4), Minnesota (2), Missouri (12), New Hampshire (3), Nevada (4), New Jersey (4), New Mexico (85), New York (25), North Carolina (5), Ohio (6), Oklahoma (19), Oregon (7), Pennsylvania (6), Rhode Island (3), Tennessee (6), Texas (342), Utah (2), Virginia (22), Vermont (1), Washington (4), Wisconsin (6), and the District of Columbia (1).

Among the 523 persons with information available, illnesses began between April 10 and June 15, 2008. Patients range in age from <1 to 99 years; 51% are female. At least 95 persons were hospitalized. No deaths have been officially attributed to this outbreak. However, a man in his sixties who died in Texas from cancer, had an infection with the outbreak strain of Salmonella Saintpaul at the time of his death. The infection may have contributed to his death.

Tomatoes with Salmonella saintpaul sicken 613 in 33 states

Since April, 613 persons infected with Salmonella Saintpaul with the same genetic fingerprint have been identified in 33 states and the District of Columbia. These were identified because clinical laboratories in all states send Salmonella strains from ill persons to their State public health laboratory for characterization.

The marked increase in reported ill persons since the last update is not thought to be due to a large number of new infections. The number of reported ill persons increased mainly because some states improved surveillance for Salmonella in response to this outbreak and because laboratory identification of many previously submitted strains was completed. In particular, one new state, Massachusetts reported ill persons.

The number of ill persons identified in each state is as follows: Arkansas (3 persons), Arizona (34), California (8), Colorado (4), Connecticut (4), Florida (1), Georgia (14), Idaho (3), Illinois (45), Indiana (9), Kansas (9), Kentucky (1), Maryland (18), Massachusetts (12), Michigan (4), Missouri (12), New Hampshire (1), New Jersey (1), New Mexico (79), New York (18), North Carolina (1), Ohio (3), Oklahoma (17), Oregon (5), Pennsylvania (5), Rhode Island (2), Tennessee (4), Texas (265), Utah (2), Virginia (21), Vermont (1), Washington (1), Wisconsin (5), and the District of Columbia (1). Among the 316 persons with information available, illnesses began between April 10 and June 13, 2008. Patients range in age from <1 to 99 years; 50% are female. At least 69 persons were hospitalized. No deaths have been officially attributed to this outbreak. However, a man in his sixties who died in Texas from cancer had an infection with the outbreak strain of Salmonella Saintpaul at the time of his death. The infection may have contributed to his death.

My tomatoes are safe … really, they’re local, so they’re safe

Amy and I were at the expecting-a-baby doctor today, and I started telling her about yet another take on the my-tomatoes-are-safe-cause-they’re-local-so-buy-them story from Tennessee.

Some locals farmers told Volunteer TV they,

“… even use fertilizer that comes from the ground rather than a store. Their fertilizers are made up of layers of manure, weeds and hay.

"It helps in killing off the bad bacteria. The worms are working through, turning it into the pure soils all around. The composting happens naturally."

Such statements really need to be verified through microbial testing.

Another farmer said,

"The guinea come through and we let them. They’ll walk through the garden and they don’t eat any of the vegetables, they just eat bugs."

The woman beside us in the doctor waiting room said her father used to have guineas in their garden and it worked real well for bug control.

I pointed out the guineas were also Salmonella factories and would be increasing the dangerous bug load in the gardens growing that fresh produce.

She said they used to have chickens at her farm, but got rid of them cause she got tired of the mess – the poop mess. Then we talked tornadoes.

But lots of others are still talking tomatoes.

Jeff Wilson, Mississippi State University Extension Service, told local media that, “locally grown tomatoes are most likely safe,” but didn’t say why. Maybe he was misquoted.

Meanwhile, I got to make more friends by telling Forbes that washing off produce is a good precaution, but won’t necessarily safeguard you from a foodborne illness, nor will only buying locally grown fruits and vegetables from the farmers’ market,

“At the farm level, produce can be contaminated in a variety of ways, including contact with untreated manure, infected or polluted water, workers with poor hygiene habits or unclean storage or transportation facilities, Powell says. While local farms may use less transportation and fewer workers, the chances for contamination are still there. And since fresh produce is, of course, uncooked, anything that comes into contact with it can taint it. Once E. coli or Salmonella gets inside a leafy green, tomato or sprout, it’s hard to get rid of it.”

Asking questions about fresh produce

For the past 10 years, when someone asks me, what can I do avoid Salmonella in tomatoes, or E. coli in spinach, especially if you – Powell – tell me I can’t wash it off, what am I supposed to do?

I would sheepishly say, ask questions. Big grocers; local markets; they should be able to explain what they do to reduce microbial risks.

But it’s not so easy. I’ve asked questions for years, and only rarely have received adequate responses. Most are of the it’s-local-it’s-safe or trust-me genre of food pornography, and, like most pornography, it’s fun to watch for awhile but gets really boring.

Chris, a student who works with me at Kansas State, went to the student union the other day and ordered a bean and cheese burrito.

“They slapped some pico de gallo on there for me. The previous day they had a sign that said they weren’t serving due to Salmonella tomatoes.

“I took it back and asked what made them start serving fresh tomatoes again. Not one of the 4 employees spoke English. All they would say is ‘yes, tomatoes.’”

Buying any sort of fresh produce is an act of faith. I say, cut the BS and start deliberately marketing food safety. That way, someone has to back it up; not some dance with an auditor or certifier, or some other third party that has nothing to do with credibility and everything to do with providing distance when the shit hits the fan – or the produce.

Otherwise, more hucksterism, and more of CNN’s Lou Dobbs.

Salmonella in tomato sickens 383 in 30 states; 48 hospitalized

CDC is collaborating with public health officials in many states, the Indian Health Service, and the U.S. Food and Drug Administration (FDA) to investigate an ongoing multi-state outbreak of human Salmonella serotype Saintpaul infections.

An epidemiologic investigation comparing foods eaten by ill and well persons has identified consumption of raw tomatoes as the likely source of the illnesses. The specific type and source of tomatoes is under investigation; however, the data suggest that illnesses are linked to consumption of raw red plum, red Roma, or round red tomatoes, or any combination of these types of tomatoes, and to products containing these raw tomatoes.

Since April, 383 persons infected with Salmonella Saintpaul with the same genetic fingerprint have been identified in 30 states and the District of Columbia: Arkansas (2 persons), Arizona (26), California (8), Colorado (2), Connecticut (2), Florida (1), Georgia (8), Idaho (3), Illinois (34), Indiana (8), Kansas (9), Kentucky (1), Maryland (10), Michigan (3), Missouri (9), New Hampshire (1), New Mexico (70), New York (9), North Carolina (1), Ohio (3), Oklahoma (5), Oregon (4), Pennsylvania (2), Tennessee (4), Texas (131), Utah (2), Virginia (17), Vermont (1), Washington (1), Wisconsin (5), and the District of Columbia (1). These were identified because clinical laboratories in all states send Salmonella strains from ill persons to their State public health laboratory for characterization. The marked increase in reported ill persons is not primarily due to a large number of new infections. The number of reported ill persons increased markedly mainly because some states improved surveillance for Salmonella in response to this outbreak and because laboratory identification of many previously submitted strains was completed.

Among the 243 persons with information available, illnesses began between April 10 and June 5, 2008. Patients range in age from <1 to 88 years; 47% are female. At least 48 persons were hospitalized. No deaths have been officially attributed to this outbreak. However, a man in his sixties who died in Texas from cancer had an infection with the outbreak strain of Salmonella Saintpaul at the time of his death. The infection may have contributed to his death.

Only 3 persons infected with this strain of Salmonella Saintpaul were identified in the country during the same period in 2007. The previous rarity of this strain and the distribution of illnesses in all U.S. regions suggest that the implicated tomatoes are distributed throughout much of the country. Because of inherent delays in reporting and because many persons with Salmonella illness do not have a stool specimen tested, it is likely many more illnesses have occurred than those reported.

How modern science and old-fashioned detective work cracked the salmonella case

Amy and I are back in Manhattan. We missed a hailstorm, the first tornado in 42 years, but we didn’t miss Salmonella in tomatoes.

We left Quebec City at 9 a.m. last Friday. National Public Radio Science Friday wanted me as a guest, and so did CNN. By 3:30 pm, we were in nowhere southwestern Ontario and I had to call the NPR studio — and they insisted on a landline.

So, after several pay phones didn’t work out, we found a lakeside motel. I hastily pleaded with the innkeeper for her phone. She said, "What’s it worth to you?"

I gave her $20.

That’s me doing my live interview on NPR (above, not exactly as shown; left, exactly as shown).

A couple of hours later we arrived at a TV studio in Toronto for a CNN interview. They said I was too late for Friday’s show, but they wanted the footage anyway and maybe they’d use it Monday.

They didn’t.

I’ve done dozens of radio interviews, and find myself defending public health types — why is it taking so long to find the source of Salmonella in tomatoes? What tomatoes should be avoided? I explain, but even through radio, can sense the listeners eyes glazing over. Public health has always been a largely thankless job  — whether local, state or federal.

So a big thank you to Elizabeth Weise of USA Today, whose story in this morning’s paper is an outstanding exposé of how the Salmonella in tomato case was cracked. It has become required reading in any of my courses.

To all the armchair quarterbacks that fill talk radio and Internet blogs, stop bitching and start producing. And move out of your parents’ basement.

Are local tomatoes safer?

Mayra Rivarola is a new student in my lab and pulled together a decent piece on tomatoes and salmonella. And provided some excellent tomato photos.

Karen Wisser of Eastside & Westside markets in Manhatan, Kansas, knows fresh produce. Wisser says buying produce from her markets is much safer than buying produce from larger retailers because she can identify their supplier easily and go back directly to the source in case of an outbreak of foodborne illness.

"If we don’t like what we’re getting, we can stop buying from them, we know what consumers want,” said Wisser.

Bryant Ambelang, chief marketing officer of Desert Glory, one of North America’s largest grower of greenhouse tomatoes, says that food safety is a top priority which is why the company invests in greenhouse operations, private wells, continual testing procedures and 100% product traceability.

The latest outbreak of salmonella associated with fresh tomatoes, with 277 sick people now identified in 28 states, including Kansas, raises questions about the safety of fresh produce and the food supply in general.

The U.S. Food and Drug Administration is advising consumers to stay away from red plum, red roma and round red tomatoes unless they come from areas that have been given the all-clear by the FDA. The list is available at www.fda.gov/oc/opacom/hottopics/tomatoes.html#retailers. The FDA website also states that homegrown tomatoes are safe to consume.

But, should consumers blindly assume that a tomato, because it was bought from the farmer next door, is free of salmonella or other dangerous bugs?

To protect the produce, it is essential that safety guidelines are followed, beginning on the farm.

Fresh fruits and vegetables can be contaminated through different venues including: contact with untreated manure, contaminated water, workers with poor hygiene habits or infected with contagious diseases, unclean containers, tools, storage or transportation facilities.