Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2021 Jul;35(4):2075-2080.
doi: 10.1111/jvim.16191. Epub 2021 Jun 1.

Control of Salmonella Dublin in a bovine dairy herd

Emily Kent  1 , Chika Okafor  2 , Marc Caldwell  1 , Tate Walker  3 , Brian Whitlock  1 , Andrea Lear  1
Affiliations
Case Reports

Control of Salmonella Dublin in a bovine dairy herd

Emily Kent et al. J Vet Intern Med. 2021 Jul.

Abstract

Salmonella enterica serovar Dublin (S. Dublin) was diagnosed in a dairy herd after signs of acute gastroenteritis and sepsis. Two hundred eighty-three Holstein cattle were sampled resulting in 700 observations, and serology for S. Dublin was performed. Holstein cattle sampled were divided by origin and arrival date to determine on-farm exposure. Prevalence estimates were calculated and compared with control measures implemented on the dairy during the outbreak. One group of cows, presumed to be the original carrier animals, had the highest overall seroprevalence (76.5%). Seroprevalence decreased throughout the study, coinciding with testing and management changes. This report documents biosecurity measures that identified S. Dublin after the purchase of subclinical carrier cattle and the steps taken to successfully control herd transmission.

Keywords: cattle; control; dairy; prevalence; salmonellosis.

PubMed Disclaimer

Figures

FIGURE 1
FIGURE 1
Timeline: Linear timeline display critical activities during the study period during the 2017 calendar year, including sample collection for diagnostic testing and culling
FIGURE 2
FIGURE 2
Barn schematic: Barn schematic demonstrating pen locations including water, animal, and personnel movement
FIGURE 3
FIGURE 3
Apparent prevalence of Salmonella Dublin: Apparent prevalence of S. Dublin by source of cattle for each sampling date in 2017. Data from all combined groups are depicted in the vertical lined bars, group 1a data are depicted in the light gray bars; group 4 data are depicted in the dark gray bars; and group 5 data are depicted in the cross‐hatched bars
See this image and copyright information in PMC

References

    1. Holschbach CL, Peek SF. Salmonella in dairy cattle. Vet Clin North Am Food Anim Pract. 2018;34:133‐154. - PMC - PubMed
    1. Agren ECC, Lewerin SS, Frössling J. Evaluation of herd‐level sampling strategies for control of Salmonella in Swedish cattle. J Dairy Sci. 2018;101:10177‐10190. - PubMed
    1. Nielsen LR, Nielsen SS. A structured approach to control of Salmonella Dublin in 10 Danish dairy herds based on risk scoring and test‐and‐manage procedures. Food Res Int. 2012;45:1158‐1165.
    1. Hermesch DR, Thomson DU, Loneragan GH, Renter DR, White BJ. Effects of a commercially available vaccine against Salmonella enterica serotype Newport on milk production, somatic cell count, and shedding of Salmonella organisms in female dairy cattle with no clinical signs of salmonellosis. American Journal of Veterinary Research. 2008;69(9):1229‐1234. 10.2460/ajvr.69.9.1229. - DOI - PubMed
    1. Smith GW, Smith F, Zuidhof S, Foster DM. Short communication: Characterization of the serologic response induced by vaccination of late‐gestation cows with a Salmonella Dublin vaccine. Journal of Dairy Science. 2015;98(4):2529‐2532. 10.3168/jds.2014-8972. - DOI - PMC - PubMed

Publication types