Bacillary angiomatosis

Lisa A Spacek, M.D., Ph.D.


  • Bartonella spp. are fastidious, facultative, intracellular gram-negative bacilli, members of the class Alphaproteobacteria.
  • B. henselae, endemic worldwide, commonly infects feral and domestic cats; vector for cat-to-cat transmission is the cat flea. Transmitted by exposure to cat flea feces, cat scratches, or bite of cat flea. High organism burden in kitten saliva.
  • B. quintana, etiologic agent of trench fever, spread by human body louse.
  • B. bacilliformis, agent of Carrion’s disease, includes Oroyo fever (acute hemolytic anemia) and verruga peruana (Peruvian warts), sandfly is vector.

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Last updated: April 8, 2019