Looking at surveillance data provided by state and local health departments on foodborne outbreaks, researchers found that salsa or guacamole-associated outbreaks accounted for 1.5% of restaurant and deli outbreaks between 1984 and 1997, a number that doubled to 3.9% during the 10-year period from 1998 to 2008, the researchers found.
Restaurants and delis were the settings for 84% of all salsa and guacamole-associated outbreaks between 1984 and 2008, the research found. While CDC began tracking outbreaks in 1973, there were none associated with these foods before 1984.
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