Salmonella Newport Sickens 11 in South Dakota, Appears in Other StatesJan 15, 2008 | Parker Waichman LLP
Salmonella Is Being Investigated By South Dakota Health Department
A Salmonella Newport outbreak is being investigated by the South Dakota state Health Department, the Centers for Disease Control (CDC), and health officials three other states. Salmonella Newport is a severe, multi-drug-resistant form of Salmonella that typically affects the intestinal tract. In South Dakota, cases were reported in nine adults and two children; six required hospitalization. Health investigators in the affected states are working to locate commonalities
In December, the US Department of Agriculture (USDA) issued a public health alert about ground beef products possibly contaminated with the multi-drug-resistant Salmonella Newport. The USDA's Food Safety and Inspection Service (FSIS) alert said illnesses are associated with multi-drug-resistant Salmonella enterica serotype Newport in ground beef that may have been ground and sold at Safeway supermarkets in Arizona, California, Hawaii, Nevada, and New Mexico between September 19th and November 5th. The FSIS said despite intensive, continuing investigations, it could not identify specific establishments, lots, and products to warrant a recall. "FSIS has no reason to believe that these products are still available for sale in commerce," the statement said, adding that people who purchased ground beef from Safeway on the affected dates should discard or destroy them. Safeway said no Safeway product tested positive for Salmonella Newport; no illnesses were reported in Hawaii or New Mexico. "There is a single reported case in Idaho that has no apparent ties to Safeway stores," the company said. In its advisory, the FSIS warned that in infected patients, the multi-drug-resistant Salmonella strain could increase the risk of hospitalization and treatment failure.
Newport Outbreak Sickened 47 In Five States
In 2002, a Newport MDR-AmpC outbreak in ground beef sickened 47 in five eastern states. Studies suggest dairy cattle are a major source for the multi-drug-resistant strain with a focus on Wisconsin, a major dairy state; Wisconsin residents infected with Salmonella Newport were likelier to be stricken with multi-drug-resistant strains compared nationwide. Also, those infected with this strain were more likely to have contact with cattle, farms, and unpasteurized milk.
The prevalence of multi-drug-resistant Salmonella Newport increased dramatically in the U.S. The most common multi-drug-resistant Salmonella Newport phenotype—MDR-AmpC—increased from 1% to 21% in five years, worrying health officials. Healthcare providers should avoid prescribing antibiotics to patients with low-risk Salmonella infections and public health messages should stress the importance of pasteurizing milk and cooking meat safely, researchers said.
In low-risk Salmonellosis those infected develop diarrhea, fever, and abdominal cramps within 12 to 72 hours of actually being infected. Laboratory testing is required to determine the presence of Salmonella; additional testing can determine the specific Salmonella type and which antibiotics to treat it. Generally, the illness lasts a week and most people recover without treatment; however, in some, diarrhea may be so severe that hospitalization is required. In these cases, the infection may have spread from the intestines to the blood stream and to other body sites. Without treatment—antibiotics—severe cases of Salmonella can result in death; however, some Salmonella bacteria—such as Salmonella Newport are antibiotic resistant, largely due to the use of antibiotics to promote the growth of feed animals.
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