Brucellosis, also known as Malta fever or undulant fever, is a zoonotic infectious disease caused by bacteria of the genus Brucella. This disease primarily affects animals, such as cattle, sheep, goats, and pigs, but, it can also spread to humans through direct contact with infected animals or by consuming contaminated animal products, such as unpasteurized milk or cheese.In humans, brucellosis can lead to flu-like symptoms, including fever, chills, sweats, fatigue, joint pain, and muscle aches. In severe cases, it can cause complications affecting the central nervous system, heart, liver, or spleen. Prevention of brucellosis involves practicing good hygiene, avoiding consumption of raw or unpasteurized dairy products, and taking precautions when working with animals, especially in high-risk occupations such as veterinary medicine or agriculture.