Brucella is one of the major zoonotic pathogens worldwide, and it is responsible for enormous economic losses
as well as considerable human morbidity in endemic areas. The organism infects animals such as swine, cattle, goat,
sheep, and dogs. Humans can become infected indirectly through contact with infected animals or by animal products
consumption. Brucellosis occurs worldwide, but it is well controlled in most developed countries. The disease is rare in
industrialized nations because of routine screening of domestic livestock and animal vaccination programmes. Clinical
disease is still common in the Middle East, Asia, Africa, South and Central America, the Mediterranean Basin, and the
Caribbean. This review article aims to describe the prevalence of brucellosis in some countries where data are available
around different regions of world, and risk factors associated infections according regression models.