There is now preliminary evidence that certain species of ticks may play a role in the transmission of the bacteria Bartonella spp. to humans. Further investigation is still needed to determine how important a vector and what role ticks play in the transmission of Bartonella spp. Species of Bartonella have been isolated from ticks. Certain species of Bartonella have been associated with disease in humans, most notably, Cat Scratch disease. Severe and chronic infections can occur especially in immunocompromised hosts.

Domesticated cats (Felis domesticus, Felis catus)
Cat Flea (Ctenocephalides felis)
Body Louse (Pediculus humanus corporis)
Tick species ( Ixodes spp. & Dermacentor spp.)

Causative Agent:
Bartonella bacilliformis
Bartonella quintana
Bartonella henselae (cat scratch disease)
Endemic Area:
Worldwide, not widespread

Incubation Period:
Variable, 3-14 days from inoculation to lesion, 5-50 days from inoculation to lymphadenapathy

Classic Symptoms:
Can vary from asymptomatic to severe illness, fever, mild neurological signs, granulomatous lymphadenitis, red papular lesion after a vector bite, scratch or lick.

Lab Test(s):
IFA assay (with a clinical picture)
Histopathology of involved Lymph nodes

Therapeutic evidence of antibiotics are still unclear. Most commonly used: rifampin, erythromycin, doxycycline

Search the Center for Disease Control, The National Institute of Health or PubMed for more information on Bartonella.

Source: Dutchess County DOH, National Institute of Health