Focusing on Latent Carriers for Controlling Salmonella Dublin in Dairy Herds

Aug 08, 2025

By Dr. Angel Abuelo and Rafael Castro-Vargas et.al

Salmonella Dublin, a host-adapted Salmonella serotype in cattle, has become substantially more prevalent in dairy and calf-rearing facilities in the United States since 2012. S. Dublin bacteria isolated from American farms commonly exhibit multidrug-resistant (MDR) characteristics. This multidrug resistance substantially complicates the treatment and control of salmonellosis due to S. Dublin infection because no antimicrobial effective against S. Dublin can be legally administered to cattle in the U.S.

S. Dublin is a zoonotic infection, meaning that infection in cattle also presents a potential risk to human health. In this article, we summarize our recent study exploring the use of a commercially available S. Dublin vaccine (EnterVene-d; Boehringer Ingelheim Animal Health) to reduce disease transmission in dairy farms.

Importance of Salmonella Dublin

In 2014, the United States Department of Agriculture’s National Animal Health Monitoring System conducted a cross-sectional study of 234 farms nationwide. S. Dublin was present in 0.7%, 6.7% and 1.8% of the operations, milk samples and milk filters, respectively. Additionally, S. Dublin has been the most common Salmonella serovar isolated from bovine samples at the Michigan State University Veterinary Diagnostic Laboratory between 2018 and 2022, representing 10–20% of all bovine Salmonella isolations.

Source : msu.edu

Video: Learning to Wrench From Dad the Hard Way

Harvest is a week out and the farm picked this week to fall apart. The truck needs a battery, the barn curtain's got a problem, and the corn and beans are telling us we're out of time to get it all fixed.

So it's a full day of wrenching. Tork supervises while I get the truck back running, then we're out at the hog barn where one rusted up part has the whole curtain system hung up. Ladder work, cable work, and a little dad-and-son disagreement about the right way to do it. We close it out walking the fields, shelling beans and checking corn, because whether everything's fixed or not, harvest starts when harvest starts.

Chapters: 00:00 Everything breaks the week before harvest 01:00 Tork supervises while I fix the truck 12:30 Out to the barn to find the curtain problem 14:30 One rusty part hung up the whole curtain 20:00 Running the curtain cable from the ladder 24:00 Walking the beans and corn before harvest 26:30 Wrapping up

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