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Incidence of Streptococcus zooepidemicus Mastitis

Lynn S Hinckley1

  • 1Mastitis Laboratory U-193, 3113 Horsebarn Hill Road, University of Connecticut, Storrs, Connecticut 06268.

Journal of Food Protection
|April 4, 2019
PubMed

Insights

Streptococcus zooepidemicus can infect humans through contaminated raw milk products. A study found this bacterium in 17% of monitored dairy herds, highlighting a significant public health risk.

Area of Science:

  • Veterinary Medicine
  • Infectious Diseases
  • Food Safety

Background:

  • Streptococcus zooepidemicus is a bacterium that can cause mastitis in cows.
  • Human infections with S. zooepidemicus have been linked to raw milk products.
  • An outbreak in 1983 in New Mexico highlighted the zoonotic potential of this pathogen.

Purpose of the Study:

  • To investigate the incidence of Streptococcus zooepidemicus mastitis in dairy cows.
  • To assess the prevalence of S. zooepidemicus in a monitored cattle population.

Main Methods:

  • A 6-month study was conducted on herds participating in the Connecticut Mastitis Control Program.
  • Data on S. zooepidemicus mastitis cases were collected and analyzed.

Main Results:

  • S. zooepidemicus mastitis was identified in 17% of the 255 monitored herds.
  • Two herds exhibited a high number of infected cows, indicating potential for widespread transmission.

Conclusions:

  • Streptococcus zooepidemicus is present in dairy herds and poses a risk for human transmission.
  • Continued surveillance and control measures are necessary to prevent zoonotic infections from contaminated dairy products.

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