Brucella include arthritis or epididymo-orchitis, spondylitis, neurobrucellosis, liver abscess formation, and endocarditis, the latter potentially fatal. Human brucellosis is usually not transmitted from human to human; people become infected by contact with fluids from infected animals (sheep, cattle, or pigs) or derived food products, such as unpasteurized milk and cheese. Brucellosis is also considered an occupational disease because of a higher incidence in people working with animals (slaughterhouse cases). People may also be infected by inhalation of contaminated dust or aerosols, and as such, the CDC has labeled "Brucella" species as highly weaponizable. Human and animal brucellosis share the persistence of
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