use of pulsed-field gel electrophoresis to link sporadic cases of invasive listeriosis with recalled chocolate milk.pulsed-field gel electrophoresis established the linkage between recalled chocolate milk and a multistate invasive listeriosis outbreak during a four-product recall period. listeria monocytogenes isolates from four hospitalized patients and an environmental dairy sample displayed asci restriction endonuclease digestion profiles identical to that of the chocolate milk isolate.19957487050
multistate outbreak of listeriosis--united states, 2000.since may 2000, 29 illnesses caused by a strain of listeria monocytogenes (lm) have been identified in 10 states: new york (15 cases); georgia (three); connecticut, ohio, and michigan (two each); and california, pennsylvania, tennessee, utah, and wisconsin (one each). dates of lm isolation ranged from may 17 through november 26 with 26 (90%) infections occurring since july 15. when subtyped, the lm isolates from these cases were indistinguishable by pulsed-field gel electrophoresis (pulsenet pat ...200011190115
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