2002 Outbreak of E. coli O157:H7 Linked to Alfalfa Sprouts, California

Five E. coli O157:H7 isolates with indistinguishable pulsed-field gel electrophoresis (PFGE) patterns were identified and investigated in California. Risk of illness was attributed to the consumption of alfalfa sprouts. A traceback led back to a single sprout-growing facility.

Immediately before the outbreak, debris had been removed from a water storage tank at the facility. Subsequently irrigation water from multiple sprout varieties tested positive for E. coli O157:H7.

Overview

Outbreak began:July 2002
Affected country:US
States/territories:CA
Pathogen:E. coli O157:H7
Vehicle(s):Sprouts
Location(s):Unknown
Molecular test results:Not reported

Health impact

Total ill:5

Sources & documents

Report / reference links