Eggs in a carton

Salmonella: Don’t Eat the Cookie Dough

Samantha Shields Animal Health, Livestock diseases, Sanitation Leave a Comment

When making cookies, the best part for me was eating the raw cookie dough. However, my brother was never a fan of it. He would always tell me that he did not want to risk getting sick. I, on the other hand, did not mind taking a risk to enjoy the raw dough. Recently, I realized an important risk for getting sick from raw dough was contracting a disease called salmonellosis, from the Salmonella bacteria. In fact, there are many ways that animals and humans can get this type of infection.

Salmonellosis is the name for the disease that develops after getting infected with Salmonella bacteria. The bacteria typically live in the intestines of animals and are shed through feces. Animals can become infected with the bacteria by consuming contaminated feed and water, living in contaminated pens, or contacting infected animals. Salmonella can also pass from livestock mothers to their offspring during birth or while nursing.

Animals including reptiles, amphibians, poultry, rodents, small mammals, farm animals and house pets are considered “carriers” of the bacteria. Typically, carrier animals appear asymptomatic, presenting with no clinical signs of illness. However, these species can also have clinical infections with diarrhea, lethargy, vomiting and high fevers. Salmonellosis is a zoonotic disease, which means humans can become infected from animals. In humans, symptoms include diarrhea, high fever, stomach cramps and vomiting (The Center for Food and Security and Public Health, 2006). If clinical signs appear, they usually occur within five to seven days after exposure.

Zoonotic diseases

Centers for Disease Control and Prevention

Salmonella-contaminated pet products such as raw foods, pig ears and other treats, and even dry dog foods are also potential sources of infection. The U.S. Food and Drug Administration (U.S. FDA) cautioned owners about feeding their pets Performance Dog frozen food dated after July 22, 2019, because a sample tested positive for Salmonella (U.S. FDA, 2019). Humans can become infected from ingesting raw or undercooked foods such as meat, eggs, or unpasteurized milk and dairy products.

If any clinical signs of salmonellosis are present in livestock, a veterinarian should be consulted. Depending on the animal species, the type of Salmonella bacteria and the state in which a farm is located, a local veterinarian may report the infection to the state veterinarian. Salmonellosis can be treated with supportive care and fluids. In serious cases, antibiotics or IV fluids might be required. It is important to keep in mind that in some cases animals that are infected can be asymptomatic and appear healthy. Testing animals regularly can identify carriers.

Biosecurity precautions are very useful in limiting the spread of Salmonella bacteria from carriers or clinically affected animals. The following livestock biosecurity measures can reduce the risk of infection:

  • Isolate any animals that are showing signs of illness.
  • Clean up animal feces and dispose of it properly.
  • Disinfect animal living quarters regularly.
  • Vaccinate animals against Salmonella.
  • Regularly sample populations to check for Salmonella.

Humans can avoid contracting salmonellosis by:

  • Washing hands with soap and water right after:
    • Contact with animals, their environment, and feces.
    • Contact with pet food and products.
    • Using the restroom.
  • Cleaning any surfaces or environments animals may have come into contact with.
  • Never eating or drinking around high-risk carriers (turtles, frogs, chicks).
  • Cooking all food thoroughly before eating.

Salmonellosis is a contagious disease of animals and humans that has many sources. Routinely practicing biosecurity will limit the risk of infection from these sources. These measures will also reduce the risk of infection from a multitude of other disease-causing agents.

References

Centers for Disease Control and Prevention (2015, September). Healthy Pets, Healthy People – Salmonella Infection. Retrieved from: https://www.cdc.gov/healthypets/diseases/salmonella.html

The Center for Food and Security and Public Health (2006). Salmonellosis [PDF File]. Retrieved from: http://www.cfsph.iastate.edu/FastFacts/pdfs/nontyphoidal_salmonellosis_F.pdf

U.S. Food and Drug Administration. (2019, September). FDA Cautions Pet Owners Not to Feed Performance Dog Raw Pet Food Due to Salmonella, Listeria monocytogenes. Retrieved from: https://www.fda.gov/animal-veterinary/news-events/fda-cautions-pet-owners-not-feed-performance-dog-raw-pet-food-due-salmonella-listeria-monocytogenes

Share this Post

About the Author
Samantha Shields

Samantha Shields

Samantha Shields is a junior undergraduate student at the University of Vermont, studying for a Bachelor of Science in Biological Science, and a minor in Animal Science. She worked with ADBCAP Director Julie M. Smith, DVM, PhD, as an online outreach assistant intern. Samantha assisted with content development for the Healthy Farms Healthy Agriculture website by evaluating, summarizing, and presenting information about protecting animal health. At the University of Vermont, she is an active member of many programs including RALLYTHON, University of Vermont Program Board, Campus Recreation, and the Women’s Club Hockey. Samantha is interested in pursuing the field of epidemiology after graduation. She has a particular interest in the research of different factors that result in diseases, as well as public health emergency planning and response.

About the Editor
Avatar

Joanna Cummings

Twitter

Joanna Cummings received a Bachelor of Science in Horticulture from The Pennsylvania State University, with a specialization in vegetable crop and greenhouse production. At PSU, she worked for the Professor of Plant Nutrition as a research technician on no-till vegetable crop experiments at the horticulture research facility, and as a greenhouse assistant in the All-American Selections Research Gardens. Her career in the agriculture industry includes work on dairy and vegetable farms, and as a greenhouse manager, estate gardener, landscaper and market garden entrepreneur. Joanna transitioned into the communications field after receiving a Master of Science in Environmental Studies, with a major in Communications, from Antioch University New England. At Antioch she worked as a field botany laboratory teaching assistant and manager of the herbarium. Joanna’s communications work experience includes agriculture education and outreach coordinator, marketing manager, director of communications, public information officer, webmaster, training program manager and project manager for nonprofit, government, academic and commercial organizations. She is currently working with Animal Disease Biosecurity Coordinated Agricultural Project (ADBCAP) Director Julie M. Smith, DVM, PhD, as a communications professional in the University of Vermont Animal and Veterinary Sciences Department. She is also the webmaster for the Healthy Farms Healthy Agriculture website.

About the Editor
Avatar

Julie M. Smith PhD

Twitter

Julie Smith DVM, PhD, is a research associate professor at the University of Vermont. Julie received her B.S. in Biological Sciences, D.V.M., and Ph.D. in Animal Nutrition at Cornell University. Since joining the Department of Animal and Veterinary Sciences in 2002, she has applied her veterinary background to programs in the areas of herd health, calf and heifer management, and agricultural emergency management. She is responsible for teaching the undergraduate Animal Welfare class required of majors in her department. Julie has conducted trainings for Extension educators, livestock producers, and community members on the risks posed by a range of animal diseases, whether they already exist in the United States, exist outside of the United States, or pose a risk to both animal and human health. In all cases, she emphasizes the importance of awareness and prevention. As a veterinarian and spouse of a dairy farmer, Julie is well aware of the animal health and well-being concerns of dairy animals. She is currently leading the Animal Disease Biosecurity Coordinated Agricultural Project (ADBCAP), a multi-species, multi-state project looking at the human behavioral aspects of implementing practices to protect animal health and food security.

 

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.