Scientists Probe Why E. Coli Strain Is So Virulent

Medical researchers are wondering whether the bacterium's method of attack is especially deadly or if it simply has spread to a lot of people. It's somewhat uncharted territory because the variant has never caused an outbreak from contaminated food before.

Source: http://www.npr.org/2011/06/02/136897193/scientists-probe-why-e-coli-strain-is-so-virulent?ft=1&f=1007

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