alexa An Alternative Test Procedure for the Protective Efficacy of Brucella Vaccines
ISSN: 1747-0862

Journal of Molecular and Genetic Medicine
Open Access

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Research Article

An Alternative Test Procedure for the Protective Efficacy of Brucella Vaccines

Zhen Wang1,2, Peng F Bie1, Tong L1, Wu1 and Qing M Wu1*

1Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, Yuanmingyuan Xilu No.2, Haidian District, 100193, China

2Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China

Corresponding Author:
Dr. Qing M. Wu
Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture
College of Veterinary Medicine, China Agricultural University
Beijing, Yuanmingyuan Xilu No.2, Haidian District, 100193, China
Tel: +86-10-6273-3901
Fax: +86-10-6273-3901
E-mail: [email protected]

Received date: January 10, 2014; Accepted date: April 10, 2014; Published date: April 20, 2014

Citation: Wang Z, Bie FP, Tong L, Wu, Wu QM (2014) An Alternative Test Procedure for the Protective Efficacy of Brucella Vaccines . J Mol Genet Med 8:106. doi: 10.4172/1747-0862.1000110

Copyright: © 2014 Wang Z, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

 

Abstract

Administration of live Brucella vaccine is required to prevent the spreadof ruminant brucellosisin affected livestock herds. This study optimized the mouse model to test the protective efficacy of live Brucella vaccine. To optimize the protective efficacy test procedure, the absolute infective doses were determined in mice as 10 Colony Forming Units (CFU)/mouse for B. melitensis 16M and 50 CFU/mouse for B. abortus 2308, which were then used as the challenge doses for the respective strains. The optimal vaccination doses of vaccine Brucellasuis S2 in mice were 102.25 CFU and 103.5 CFU/mouse, which could confer ≥ 80% protection in mice against challenge by B. melitensis 16M or B. abortus 2308, respectively. In addition, challenge with B. melitensis 16M or B. abortus 2308 should occur just at 3.63 weeks and 4.75 weeks post-inoculation, respectively. The protective efficacy test not only was more accurate and took less time but also was consistent with the evaluation index in host animals. Our study indicated that the mouse model could be used to test the protective efficacy of live Brucella vaccines during their production and development.

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