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In August 2012, the Arkansas Department of Health (ADH) was notified of gastrointestinal illness outbreaks in two Arkansas state prisons. ADH investigated the outbreaks and conducted case-control studies to identify the source of the illnesses. This report describes the results of these investigations, which identified 528 persons with onset of diarrhea during August 2-18, 2012. Results from the prison A investigation identified chicken salad as the most likely vehicle. At prison B, person-to-person transmission and contamination of multiple foods likely contributed to illness. Analysis of stool specimens from inmates identified eight serotypes and 15 pulsed-field gel electrophoresis (PFGE) patterns of Salmonella. Isolates of Salmonella from eggs produced at prison B matched two outbreak patterns. An additional 69 inmates were positive by culture but were not interviewed or did not report diarrhea, making the total case count 597. Sanitarians identified problems with food preparation, hand washing, and food safety training. ADH tested inmate kitchen workers, excluded infected inmates from work, and provided food safety training. Prison kitchen staff should follow guidelines consistent with state regulations for safe food preparation and pass sanitarian inspection. [ABSTRACT FROM AUTHOR]

The article focuses on the research which discusses the increase in vibrio parahaemolyticus (Vp) infections linked with consumption of Atlantic Coast Shellfish in the U.S. It states that an indistinguishable strain traced from shellfish caused illness in 104 persons from 13 states during May-September 2013. It notes that the infection was associated with consumption of raw shellfish and seafood. It mentions that infection can be avoided if consumers avoid eating raw or undercooked shellfish.