Recalls of ground beef and organic walnuts occurred due to potential E. coli contamination, linked to 12 illnesses from walnuts. Most E. coli cases go unreported.
Shiga toxin-producing E. coli commonly found in cow intestines can contaminate ground beef, leading to illnesses. These bacteria can also affect farm soil and water sources.
Microbiologist Edward G. Dudley explains the different kinds of E. coli. While most are harmless, some, like Shiga toxin-producing E. coli, can make people sick.
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