AP

“An outbreak of E. coli poisoning has expanded to Tennessee, where one more person has been sickened after eating romaine lettuce grown on an Arizona farm.

“The federal Centers for Disease Control and Prevention says there are 23 confirmed cases of E. coli and seven probable cases connected to the tainted lettuce. That is up from 19 confirmed by CDC earlier this week.

“The rest of those sickened live in Michigan, Ohio and New York. Many of them were middle school, high school and college students who ate in school cafeterias. The CDC said there are 10 confirmed cases in Michigan, eight confirmed cases in Ohio, four confirmed cases in New York and one confirmed case in Tennessee. All of those sickened became ill before late April. (Emphasis added)

“The strain of E. coli involved in the outbreak is rare and difficult to diagnose, so there may be more unreported cases, officials have said.”

Source: AP, May 12, 2010