Shigella sonnet

As with travel, international commerce has had a profound effect on health. In recent years, the globalization of the food supply and the development of extensive food distribution networks have increased the risk of foodborne disease outbreaks. In particular, outbreaks associated with fresh produce have caused concern. In 1998, eight restaurant-associated outbreaks of shigellosis caused by a common strain of Shigella sonnet occurred in the United States and Canada. The source, contaminated parsley, was traced to a 1,600-acre farm in Mexico (Naimi et ah, 2003). 

Some glycosidic linkages have proved stable to hydrogen fluoride solvolysis. Attempts to isolate monosaccharides by solvolysis of the O-specific polysaccharide (13) of Shigella sonnet phase 1 with hydrogen fluoride and of the capsular polysaccharide (14) of Streptococcus pneumoniae type 1 failed. Prior acetylation of the free amino groups of the diamino sugar did not render the polymer susceptible to the solvolysis. 

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