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Tainted Tomatoes Likely From Florida or Mexico: FDA

Officials say salmonella contamination probably came from one source

FRIDAY, June 13 (HealthDay News) -- The bulk of the tomatoes available in the United States at the time of the recent -- and ongoing -- salmonella outbreak came from Florida and Mexico, U.S. health officials said Friday.

"The vast majority of tomatoes in national distribution at that time were being produced in one of those two places," Dr. David Acheson, associate commissioner for food protection at the U.S. Food and Drug Administration, said during an afternoon teleconference.

The northern part of Florida has been excluded from the list of possible origins of the outbreak, although central and southern Florida are still a question mark, Acheson added.

Officials also believe it very likely that the contamination arose from one source.

"One thing you learn in science is never to say never. But, based on probabilities, it's extremely likely that the same genetic fingerprint would have come from the same place at the same time," Acheson said. "All of the precedent indicates that this comes from a single geographic region."

U.S. inspectors are currently visiting distributors, suppliers and importers to get pertinent records. They have not yet been sent to any farms because no specific farms have yet been implicated; officials don't yet know whether this is a packing-place problem or a farm problem, Acheson said.

Nor do officials know when they'll have an answer. "We won't know for sure until we get there," Acheson said. "I am confident that we will get to the point where we will definitely be able to say a geographic region. I'm not certain but confident that we will be able to get that far... [But] you can be almost there and something falls apart and then you have to start over. That's happened a number of times."

The number of people sickened in the outbreak remains 228 in 23 states, with at least 25 hospitalizations, health officials said.

The investigation is categorized as "ongoing," said John Guzewich, senior environmental health scientist at the FDA. But it could take a while to know whether or not infections have ceased.

"The last case of which we are aware, the person became ill on June 1," said Dr. Patricia Griffin, chief of the Enteric Diseases Epidemiology Branch at the U.S. Centers for Disease Control and Prevention. "The [salmonella] incubation period is eight to 48 hours but it can be a few days more, which means that if that person was one of the many who got sick from a tomato, he or she probably ate the tomato at the end of May. That tomato may have been at the end of its shelf life, or it may have been at the beginning of its shelf life. We're still watching to see whether or not the outbreak is ongoing. Because of delays, it takes us a while to know whether the outbreak is over and not."

States reporting illnesses include: Arizona, California, Colorado, Connecticut, Florida, Georgia, Idaho, Illinois, Indiana, Kansas, New Mexico, Missouri, New York, Oklahoma, Oregon, Tennessee, Texas, Utah, Vermont, Virginia, Washington, and Wisconsin, the FDA said.

On Tuesday, the warning about salmonella-contaminated tomatoes was expanded to include the entire country.

So far there have been no confirmed deaths, but the death of a Texas man was still under investigation, Dr. Ian Williams, chief of the OutbreakNet Team at the CDC, said during a Wednesday teleconference. The man had cancer and consumed pico de gallo, which is made with tomatoes.

The particular type of salmonella involved, Salmonella Saintpaul, is virulent and relatively rare, accounting for only about 400 reported cases annually in the United States, Williams said.

FDA officials have said the outbreak seems to be linked to certain types of raw and red tomatoes and products containing these tomatoes. In particular, the agency said, raw, red plum tomatoes; raw, red Roma tomatoes; and raw, round red tomatoes should be avoided at this time.

Cherry tomatoes, grape tomatoes, homegrown tomatoes and tomatoes sold with the vine still attached appear to be safe. But all tomatoes should be washed before eating, officials advised.

The FDA recommends consuming raw, red plum; raw, red Roma; or raw, red round tomatoes only if you know they have been grown and harvested from these areas: Alabama, Alaska Arkansas, California, Colorado, Delaware, Florida (counties of: Jackson, Gadsden, Leon, Jefferson, Madison, Suwannee, Hamilton, Hillsborough, Polk, Manatee, Hardee, DeSoto, Sarasota, Highlands, Pasco, Sumter, Citrus, Hernando, Charlotte, if accompanied by certificate issued by Florida Department of Agriculture and Consumer Services) Georgia, Hawaii, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, New Hampshire, New Jersey, New York, Nebraska, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Belgium, Canada, the Dominican Republic, Guatemala, Israel, the Netherlands and Puerto Rico.

Salmonella is a bacteria that can cause bloody diarrhea in humans. Some 40,000 cases of salmonellosis are reported in the United States each year, although the CDC estimates that because milder cases are not diagnosed or reported, the actual number of infections may be 30 or more times greater. Approximately 600 people die each year after being infected.

In related news, there were these actions on Thursday:

  • U.S. lawmakers voted to subpoena nine companies that are responsible for analyzing the most dangerous foods entering the country. The House of Representatives' Energy and Commerce subcommittee has been investigating for months the possibility that government import alerts were being circumvented. Potentially dangerous foods from abroad can only enter the marketplace after a laboratory has determined they are safe, according to FDA rules. But the investigators have been told that it is a routine practice for private labs to test food until a clean result is obtained, the Associated Press reported.
  • Congressional investigators said the FDA has failed to meet its own stated goals of protecting the nation's food supply.

    The investigators for the Government Accountability Office were scheduled to tell the House Energy and Commerce Committee that the FDA has done little to implement its "food protection plan," a risk-based inspection system of food plants, which the agency released in November, The New York Times reported.

  • A poll released by the Harvard School of Public Health found that, despite the number of food safety incidents in recent years, most Americans are confident that the food produced in the United States is safe. However, many have concerns about the safety of imported food produced in some other countries.

More information

Visit the U.S. Centers for Disease Control and Prevention for more on the current salmonella outbreak.

SOURCES: June 13, 2008, teleconference with David Acheson, M.D., associate commissioner for foods, U.S. Food and Drug Administration, and John Guzewich, senior environmental health scientist at the FDA, and Dr. Patricia Griffin, chief of the Enteric Diseases Epidemiology Branch at the U.S. Centers for Disease Control and Prevention; June 11, 2008, teleconference with Ian Williams, M.D., chief, OutbreakNet Team, U.S. Centers for Disease Control and Prevention; June 12, 2008, news release, Harvard School of Public Health, Boston

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