updated 10/31/2006 7:29:54 PM ET 2006-11-01T00:29:54

A salmonella outbreak that sickened dozens of people in 19 states appears to be over, while investigators remain unsure how it began, a federal official said Tuesday.

  1. Don't miss these Health stories
    1. Splash News
      More women opting for preventive mastectomy - but should they be?

      Rates of women who are opting for preventive mastectomies, such as Angeline Jolie, have increased by an estimated 50 percent in recent years, experts say. But many doctors are puzzled because the operation doesn't carry a 100 percent guarantee, it's major surgery -- and women have other options, from a once-a-day pill to careful monitoring.

    2. Larry Page's damaged vocal cords: Treatment comes with trade-offs
    3. Report questioning salt guidelines riles heart experts
    4. CDC: 2012 was deadliest year for West Nile in US
    5. What stresses moms most? Themselves, survey says

Health officials believe the outbreak may be linked to tomatoes or other fresh produce contaminated with the bacteria, but have been unable to pinpoint a specific product or source. There have been no deaths, but 171 people have fallen sick. Officials revised downward the tally by one case Tuesday, following further investigation.

Reports of illness peaked in late September, suggesting the outbreak is now over, said Dr. David Acheson, chief medical officer in the Food and Drug Administration’s Center for Food Safety and Applied Nutrition. There is little evidence of any ongoing risk, he added.

“Whatever was contaminated that caused the illness, it has either been consumed, destroyed or thrown out. So the suggestion there is a need to put out a consumer warning about produce on the shelf is unwarranted. It seems to be past,” Acheson said.

FDA unable to trace source of outbreak
The Centers for Disease Control and Prevention continue to interview people sickened in the outbreak, but the information gathered is too vague or broad for the FDA to trace the contamination to its source, Acheson said.

In the case of the recent E. coli outbreak, which killed three people and sickened more than 200, investigators were able to quickly identify fresh, bagged spinach as the culprit. The information on the bags — including brand name, sell-by date and lot number — allowed them to then zero in on the likely source of the tainted spinach: a handful of farms in California’s Salinas Valley.

If fresh tomatoes were the source of the salmonella outbreak, that sort of detective work is more difficult, Acheson said.

“You can get a lot of information from looking at a bag. You don’t get that information from looking at a tomato,” Acheson said.

The states involved are Arkansas, Connecticut, Georgia, Indiana, Kentucky, Maine, Massachusetts, Michigan, Minnesota, North Carolina, New Hampshire, Ohio, Pennsylvania, Rhode Island, Tennessee, Virginia, Vermont, Washington and Wisconsin.

© 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Discuss:

Discussion comments

,

Most active discussions

  1. votes comments
  2. votes comments
  3. votes comments
  4. votes comments