How a parasitic bacterium induces blood vessel formation to cause lesions

Bacteria of the genus Bartonella are parasites that can be transmitted to humans via insect bites and animal scratches, resulting in an infection known as “bartonellosis.” Cat-scratch disease and trench fever are forms of bartonellosis caused by different Bartonella species infecting humans. Bartonella bacteria can cause lesions to pop up in the skin and internal organs.