The Bartonella infections, also known as bartonellosis, are a group of complex diseases caused by bacteria belonging to the Bartonella genus. These infections are typically zoonotic, meaning they are transmitted from animals to humans. While the most well-known form is cat scratch fever, Bartonella bacteria can cause a variety of clinical symptoms, including neurological, cardiovascular, and dermatological manifestations. Due to the wide spectrum of effects of these infections, it is important to understand the biological characteristics of Bartonella bacteria, the modes of transmission, potential complications, and the challenges of diagnosis and treatment. The Biological Characteristics of Bartonella Bacteria The Bartonella genus includes Gram-negative bacteria, with more than 40 different species.…