Brucellosis neurobrucellosis. Brucellosis in humans is usually associated with consumption of unpasteurized milk and soft cheeses made from the milk of infected animals—primarily goats, infected with "Brucella melitensis" and with occupational exposure of laboratory workers, veterinarians, and slaughterhouse workers. Some vaccines used in livestock, most notably "B. abortus" strain 19, also cause disease in humans if accidentally injected. Brucellosis induces inconstant fevers, miscarriage, sweating, weakness, anaemia, headaches, depression, and muscular and bodily pain. The other strains, "B. suis" and "B. canis", cause infection in pigs and dogs, respectively. Definite diagnosis of brucellosis requires the isolation of the organism from the blood,
Balance of threat Balance of threat The balance of threat (BoT) theory was proposed by Stephen M. Walt first in an article titled ""Alliance Formation and the Balance of World Power"" published in the journal "International Security" in 1985 and later further elaborated in his book ""The Origins of Alliances"" (1987). The balance of threat theory modified the popular balance of power theory in the neorealist school of international relations. According to balance of threat theory, states' alliance behavior is determined by the threat they perceive from other states. Walt contends that states will generally balance by allying against a perceived threat, although