Bartonella henselae, formerly Rochalimæa henselae, is a bacterium that is the causative agent of cat-scratch disease [1] (bartonellosis). Bartonella henselae is a member of the genus Bartonella , one of the most common types of bacteria in the world.

May 15, 2024 · People become infected with Bartonella henselae from the scratch of domestic or feral cats, particularly kittens. Cats can have fleas that carry B. henselae bacteria. These bacteria can be transmitted from a cat to a person during a scratch that …

For information on transmission, symptoms, and prevention, visit: About Bartonella henselae. Testing and diagnosis B. henselae infection may be diagnosed clinically in patients with typical signs and symptoms and a compatible exposure history.

Jun 12, 2023 · Cat scratch disease is an illness caused by an intracellular gram-negative rod known as Bartonella henselae. It affects the lymph nodes draining the area where a cat scratch or bite occurs, causing regional lymphadenopathy.

May 15, 2024 · Several species of Bartonella bacteria cause disease in people. Infection with any one of these bacteria is referred to broadly as bartonellosis, although some forms of infection also have common names (for example, cat scratch disease). For more information: Bartonella henselae infection (cat scratch disease) Bartonella quintana infection

Jun 25, 2023 · Bartonella is a gram-negative intracellular facultative bacterium that is commonly implicated in causing zoonotic infections globally. Almost 20 different species of Bartonella have been isolated thus far among in which Bartonella henselae, Bartonella quintana, and Bartonella bacilliformis are frequently associated with infections in humans.

Jan 15, 2011 · Bartonella henselae is the microorganism responsible for CSD. It is found in feline erythrocytes and fleas, which can contaminate saliva and then be introduced into humans through biting...

Jun 13, 2023 · Bartonella infection causes severe clinical syndromes in humans. The three most important pathogens responsible for the majority of infections are B henselae, B quintana, and B bacilliformis. Some species are worldwide in distribution (B henselae), whereas others are geographically localised (B bacilliformis).

Several gram-negative bacteria in the genus Bartonella cause human disease through various transmission routes. Human illness primarily is caused by B. quintana (known historically as “trench fever”), B. bacilliformis (Carrión disease), and B. henselae (cat scratch disease [CSD]).

Bartonella species are gram-negative bacteria previously classified as Rickettsiae. They are facultative intracellular organisms that typically live within red blood cells (RBCs) and endothelial cells. They cause several uncommon diseases (see table Some Bartonella Infections):