Foodborne Illness Outbreak Database

This database provides summaries of significant food and water related outbreaks occurring since 1984 caused by E. coli, Salmonella, Hepatitis A, Campylobacter and other pathogens. Read more »

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2011 Multistate Outbreak of Salmonella Bovismorbificans Linked to Contaminated Tahini Paste

Twenty three people in 7 states and the District of Columbia were diagnosed with Salmonella Bovismorbificans between August 19 and November 21, 2011. Median age was 27 (age range 20-87). Among the 22 patients with exposure information, 20 (91%) reported eating at restaurants in the DC metropolitan area. Sixteen of 19 patients reported eating Mediterranean-style food; 10 of 15 patients reported eating hummus. All 23 patients received outpatient medical care. No hospitalizations or deaths were reported. District of Columbia health investigators collected hummus and hummus ingredients from 2 restaurants. The DC Public Health Laboratory isolated S. Bovismorbificans from hummus samples which was a genetic match to the strain isolated in case patients. On May 30, 2012 traceback by FDA suggested that tahini used in hummus was a plausible source of the contaminated hummus. The traceback revealed tahini used at the different restaurants in the DC area came from a common foreign manufacturer from Lebanon associated with recent Salmonella outbreaks in Canada.

  • Outbreak began:
  • August 2011
  • Affected Country:
  • US
  • Affected States/Territories:
  • California, Maryland, Virginia, District of Columbia, New Jersey
  • Organism(s):
  • Salmonella Bovismorbificans
  • Vehicle(s):
  • Hummus
  • Molecular Results Available:
  • Yes
  • Test Results:
  • TDFX.0108/TDFA26.0006
  • Location(s):
  • Restaurant
  • Brand Name(s):
  • Product Subject to Recall:
  • No
  • Total ill:
  • 23
  • Number ill by Case Definition Known:
  • Unknown
  • Number Laboratory Confirmed Cases:
  • N/A
  • Number Probable Cases:
  • N/A
  • Number Possible Cases:
  • N/A
  • Anyone Hospitalized:
  • No
  • Number Hospitalized:
  • 0
  • Any Deaths:
  • No
  • Number Dead:
  • 0
  • Any References:
  • No

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