2441: Evaluation of a New Vaccine for Canine Brucellosis

Grant Status: Open

Grant Amount: $67,524
Dr. Angela M Arenas, DVM, PhD; Texas A&M AgriLife Research
March 1, 2018 - February 28, 2019
Sponsor(s): Norwegian Elkhound Association of America, Inc., Portuguese Water Dog Foundation, Inc.
Breed(s): -All Dogs
Research Program Area: Immunology and Infectious Disease

Abstract

Canine infection by Brucella spp. constitutes a serious problem for dog breeders and pet owners, leading to the economic burden associated with reproductive loss and veterinary care. Canine brucellosis is also considered a public health concern because of its potential to be transmitted to humans. Within the US, the disease has reemerged due to the chronic persistence of the organism, low dose for infection, low sensitivity and specificity of the current diagnostic tests, and most importantly the lack of a protective vaccine for canine use. Historically in the US, brucellosis control efforts for cattle, sheep, goats and domestic pigs have been successful mainly due to the availability of protective and efficacious vaccines. The goal of our proposed research is to develop a brucellosis vaccine that is safe, stable, free of side effects and efficacious for dogs. Towards this goal, previous funding (CHF Grant- 2275-A) has permitted us to successfully engineer a promising live attenuated vaccine candidate denominated B. canis RM666?vjbR. Initial in vitro studies have demonstrated that this candidate is highly attenuated in canine macrophages as well as laboratory animals. The proposed study will further investigate the ability of the vaccine candidate to induce appropriate immunity prior to its testing in dogs. We will also develop a diagnostic assay capable of differentiating naturally infected vs vaccinated animals, necessary for mass vaccination. It's our expectation, that the development of a safe and highly protective brucellosis vaccine for dogs, will significantly impact owners, breeders and human health by limiting the spread of the disease.

Publication(s)

None at this time.

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