Update on Salmonella in Ground Tuna

 As of 5/17/12, there are now 316 reported Salmonella infections linked to raw ground tuna product.  The number of states where illnesses have occurred indicate how widespread the contamination must have been within the lots of product produced.  In other words, this was not a one time contamination event for the food processor.

Multistate Outbreak of Salmonella Bareilly and Salmonella Nchanga Infections Associated with a Raw Scraped Ground Tuna ProductCDC News Relase Posted May 17, 2012 2:00 PM EThttp://www.cdc.gov/salmonella/bareilly-04-12/index.html



May 17, 2012Case Count Update

A total of 316 individuals infected with the outbreak strains of Salmonella Bareilly or Salmonella Nchanga have been reported from 26 states and the District of Columbia. The 58 new cases are from Alabama (1), California (2), Colorado (1), Georgia (3), Illinois (4), Indiana (1), Louisiana (1), Maryland (3), Massachusetts (6), New Jersey (1), New York (10), North Carolina (6), Pennsylvania (5), Tennessee (2), Texas (3), Virginia (6), and Wisconsin (3).

Three hundred and four persons infected with the outbreak strain of Salmonella Bareilly have been reported from 26 states and the District of Columbia. The number of ill persons with the outbreak strain of Salmonella Bareilly identified in each state is as follows: Alabama (3), Arkansas (1), California (4), Colorado (1), Connecticut (9), District of Columbia (2), Florida (1), Georgia (13), Illinois (27), Indiana (1), Louisiana (4), Maryland (27), Massachusetts (33), Mississippi (2), Missouri (4), Nebraska (1), New Jersey (26), New York (48), North Carolina (10), Pennsylvania (25), Rhode Island (6), South Carolina (3), Tennessee (4), Texas (7), Virginia (22), Vermont (1), and Wisconsin (19).
Twelve persons infected with the outbreak strain of Salmonella Nchanga have been reported from 5 states. The number of ill persons with the outbreak strain of Salmonella Nchanga identified in each state is as follows: Georgia (2), New Jersey (2), New York (6), Virginia (1), and Wisconsin (1).

Among 316 persons for whom information is available, illness onset dates range from January 28 to May 3, 2012. Ill persons range in age from <1 to 86 years, with a median age of 30. Fifty-nine percent of patients are female. Among 217 persons with available information, 37 (17%) reported being hospitalized. No deaths have been reported.

Illnesses that occurred after April 17, 2012, might not be reported yet due to the time it takes between when a person becomes ill and when the illness is reported.

Investigation Update

Laboratory testing conducted by state public health laboratories in Connecticut, Maryland, Massachusetts, Pennsylvania, South Carolina, and Wisconsin has isolated Salmonella from 53 (96%) of 55 samples taken from intact packages of frozen yellow fin tuna scrape from Moon Marine USA Corporation or from sushi prepared with the implicated scrape tuna product. Pulsed-field gel electrophoresis results are available for Salmonella isolates from 41 of the 53 positive samples. Thirty-six samples yielded the outbreak strain of Salmonella Bareilly, and 12 samples yielded the outbreak strain of Salmonella Nchanga. Seven samples yielded the outbreak strains of both Salmonella Bareilly and Salmonella Nchanga.