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Human multidrug-resistant Salmonella Newport infections, Wisconsin, 2003-2005

Amy E Karon1, John R Archer, Mark J Sotir

  • 1University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA. ftx9@cdc.gov

Emerging Infectious Diseases
|January 26, 2008
PubMed

Insights

Multidrug-resistant Salmonella Newport infections were more common in Wisconsin. Exposure to cattle, farms, and unpasteurized milk increased infection risk for these resistant strains.

Area of Science:

  • Epidemiology
  • Infectious Diseases
  • Food Safety

Background:

  • Salmonella Newport is a significant cause of bacterial gastroenteritis.
  • Understanding antimicrobial resistance patterns is crucial for public health.
  • Regional variations in Salmonella resistance require investigation.

Observation:

  • A retrospective study analyzed Salmonella Newport infections in Wisconsin from 2003-2005.
  • Multidrug resistance (MDR) prevalence was notably higher in Wisconsin compared to national rates.
  • A significant association was observed between MDR Salmonella Newport and exposure to cattle, farms, and unpasteurized milk.

Findings:

  • Wisconsin experienced a higher prevalence of multidrug-resistant Salmonella Newport during the study period.
  • Risk factors for multidrug-resistant Salmonella Newport included reported exposure to cattle, farms, and unpasteurized milk.
  • Susceptible Salmonella Newport infections did not show the same strong association with these specific exposures.

Implications:

  • Findings highlight the need for targeted public health interventions in regions with high MDR Salmonella prevalence.
  • Controlling exposure to cattle, farms, and unpasteurized milk may be key strategies to reduce MDR Salmonella Newport infections.
  • Further research into the specific mechanisms driving MDR in this region is warranted.

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