BRUCELLOSIS DISEASE

Brucellosis is a widespread zoonotic infectious disease that poses a serious public health problem in many regions of the world, especially in developing countries with extensive livestock farming. The disease is caused by bacteria of the genus Brucella, which are small, Gram-negative, facultative intracellular microorganisms capable of infecting both animals and humans. Human infection usually occurs through direct contact with infected animals, consumption of unpasteurized dairy products, or inhalation of contaminated aerosols. Due to its nonspecific clinical manifestations, brucellosis is often difficult to diagnose at an early stage, which may lead to chronic infection and various systemic complications. This study aims to analyze the microbiological characteristics, mechanisms of transmission, immune response, and modern laboratory diagnostic methods of brucellosis. Particular attention is given to the pathogenic properties of Brucella species, their ability to survive and replicate within host cells, and the role of the immune system in controlling infection. The article also discusses contemporary microbiological and immunological diagnostic approaches, including bacteriological culture, serological testing, and molecular methods used for the identification of the pathogen. Understanding the microbiological features and immunological mechanisms of brucellosis is essential for improving early diagnosis, effective treatment, and preventive strategies. The findings highlight the importance of integrated veterinary and medical surveillance systems, as well as public health measures aimed at reducing the incidence of this infection. This research contributes to a deeper understanding of brucellosis from the perspectives of microbiology, virology, and immunology, and emphasizes the need for continuous scientific investigation to control and prevent the disease worldwide.

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