Contaminated Roma tomatoes were the likely cause of a string of salmonella outbreaks that made 561 people sick in the United States and Canada last summer, U.S. health officials said on Thursday.Salmonella is a common bacteria sometimes found in eggs, raw milk and raw meat. It typically causes diarrhea and other flu-like symptoms, and is rarely fatal.Tomatoes have been linked to the bacteria in the United States since 1990 and are believed to have played a key role in three outbreaks that surfaced in North America last summer, said the Centers for Disease Control and Prevention in a report.
