Listeria

New tool on tap for tracing outbreaks to their source

Published in TB and Outbreaks Week, June 17th, 2003

A new tool could be at hand for "subtyping" strains of Listeria monocytogenes bacteria that cause food-borne illness, thanks to scientists with the U.S. Agricultural Research Service.

Subtyping determines the strain affiliation of Listeria specimens isolated in the lab. This is critical to epidemiologists tracing outbreaks back to their source, as well as to government and industry efforts to safeguard food supplies through environmental monitoring, disinfection, sanitation and other measures. In the United States, listeriosis sickens an estimated 2500 people annually, and kills 500. Of the bacterium's 13 known strains, serotypes 1/2a, 1/2b and 4b are...

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Source: TB and Outbreaks Week (2003-06-17)

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