<prompt> Organism most likely to cause fever of unknown origin in a farmer who raises goatsBrucella melitensisClostridium novyiHistoplasma capsulatumMycobacterium tuberculosis  <response>: Human brucellosis is acquired from animals, directly or indirectly. Goats, sheep, cattle, buffalos, and swine are common sources. Most human infections in various pas of India are due to B.melitensis acquired from goats and sheep. Ref: Textbook of microbiology; Ananthanarayana and panikers; 10th edition; Pg: 348 