CDC investigating two salmonella outbreaks

The Centers for Disease Control and Prevention has begun investigating two salmonella outbreaks that have been ongoing since April.

The CDC, working in collaboration with the U.S. Department of Agriculture's Food Safety and Inspection Service, the U.S. Food and Drug Administration and public health officials from several states, is investigating the multistate outbreaks of Salmonella Hartford and Salmonella Baildon, Food Safety News reports.

The two separate outbreaks have been associated with a Mexican-style fast food restaurant chain's food. The unnamed restaurant chain has been implicated, the CDC reports, but the specific source of the salmonella - a particular food item or supplier - has not been identified.

Approximately 75 individuals infected with a strain of Salmonella Hartford have been reported from 15 states since April 1, 2010, the CDC reports. An additional 80 people infected with Salmonella Baildon have been reported from 15 states since May 1, 2010,.

As part of the investigation, a significant effort has been made to find a common source of the salmonella but has, to date, been unsuccessful in determining the bacteria's origin.

Both Salmonella Hartford and Salmonella Baildon are rare serotypes of salmonella bacteria. Salmonella, when ingested, results in such symptoms as diarrhea, abdominal cramps,f ever, nausea and vomiting.