EHEC bacteria under electronic microscope
Updated: 2011-05-26 18:50
An undated file picture taken with electronic microscope shows EHEC bacteria (enterohaemorrhagic Escherichia coli which can cuase severe foodborn disease) in Helmholtz Centre for Infection Research in Brunswick. German health authorities on May 25, 2011 have warned consumers to be careful with raw salad vegetables, especially those originating from northern Germany, after reporting about 140 cases and at least four deaths.[Photo/Agencies]
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