About Dairy Wellness

Different types of Salmonella infections
Posted by Gary Neubauer

Salmonella is a devastating disease for the dairy industry. Not only can it cause death to cattle, but Salmonella can go undetected and spread throughout your dairy without your knowledge. That’s the difference between the two types of Salmonella infections — clinical and subclinical.

Clinical infections often are described as “the tip of the iceberg” because the symptoms are visible. With a clinical Salmonella infection, you can see severe illness with:

  • Fever
  • Diarrhea
  • Rapid decline in milk production
  • Death

Subclinical infections are different, although they are the more common type of infection. They often are referred to as “the base of the iceberg,” because the symptoms are not as recognizable but can be just as costly. Subclinical cases have less- obvious signs:

  • Reduced milk yield
  • Poor reproductive performance
  • Abortion
  • Weight loss
  • Poor feed efficiency

Understanding the difference in Salmonella infections is the first step to seeing if you have a hidden problem. The next step is to visit with your veterinarian to discuss a Salmonella prevention plan. Visit for more information about the disease.

All trademarks are the property of Zoetis Inc., its affiliates and/or its licensors. All other trademarks are the property of their repsctive owners. ©2019 Zoetis Inc. all rights reserved. The product information provided in this site is intended only for residents of the United States. The products discussed herein may have different label indications in different countries. The animal health information contained herein is provided for educational purposes only and is not intended to replace consultation with your veterinarian. All decisions regarding animal health care must be made with a veterinarian, considering the unique characteristics of each animal.