has role immunizes against disease immunizes against pathogen test in lab animal model brucellosis Mus musculus Brucella abortus vaccine in research role live attenuated Brucella abortus vaccine live attenuated Brucella abortus strain 544 vaccine 2026-10-25T08:06:33Z Live attenuated Brucella abortus vaccine using live co2-dependent Brucella abortus 544 bacteria. Vaccinated mice showed accelerated decrease in bacterial counts preventing multiplication of challenge strain in spleens and livers compared to normal mice. Vaccination induced acquired resistance characterized by an accelerated decreasing phase of bacterial counts after challenge, with near elimination of bacteria in spleen and liver by day six post-challenge. VIOLIN: https://violinet.org/vaxquery/vaccine_detail.php?c_vaccine_id=11955 Jie Zheng 11955 PMID:821385 VaxAgent vaccine live attenuated vaccine role