[Show abstract][Hide abstract] ABSTRACT: To the Editor: Bartonella species are small, gram-negative, fastidious, and hemotropic emerging pathogens that cause various human diseases and circulate between a large variety of mammalian and arthropod vectors. More than 30 Bartonella species have been isolated from humans as well as from wild and domestic animals worldwide (1). B. clarridgeiae was suggested to be a minor causative agent of cat-scratch disease (CSD) in humans, however, this suggestion remains controversial. Usually, the agent of CSD is B. henselae and its principal reservoir is domestic cats (Felis catus) (1,2). The principal vector of these 2 species is the cat flea (Ctenocephalides felis) (3,4). We report Bartonella species in fleas collected from cats and dogs in Tahiti, French Polynesia.