<prompt> Which amongst the following biological agents has the least potential for use as a biological weapon for microbial bio-terrorism?Plague Yersinia PestisSmall Pox Variola MajorBotulism CI. BotulinumBrucellosis Brucella spp  <response>: Brucella spp, comes under the Category B agents used in bioterrorism which has moderate morbidity rates and low moality rates as compared to the other agents shown above which are Category A agents and responsible for high moality rates. Ref: Harrisons Principles of Internal Medicine, 16th edition, Page 1279. 