At the time of manufacture, 78% of 69 sets of packaged frankfurters collected from 40 firms had aerobic plate counts of 10,000 or fewer/g and 90% had 20,000 or fewer/g (geometric means of 10 units/set), 91% were coliform-negative, and 93% were Staphylococcus aureus-negative. Only one of 690 packaged frankfurter units was Escherichia coli-positive, and all units were salmonellae-negative.

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Author notes

1U.S.D.A ., Eastern Laboratory, Athens, Georgia