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Volume 16, Number 3—March 2010


Bartonella spp. Transmission by Ticks Not Established

Sam R. Telford and Gary P. WormserComments to Author 
Author affiliations: Tufts University Cummings School of Veterinary Medicine, North Grafton, Massachussetts, USA (S.R. Telford III); New York Medical College, Valhalla, New York, USA (G.P. Wormser)

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Table 2

Reasons that transmission of Bartonella henselae by deer ticks is unlikely or unproven

• Typical cat-scratch disease after a recognized deer tick bite has not been observed.
• Cat-scratch disease has a different seasonal pattern from that of Lyme disease.
• Appropriate seroepidemiologic studies have not been done.
• Vector competence of ticks for B. henselae in an animal system has not been proven.
• No convincing evidence of B. henselae in deer ticks has been reported.
• The Bartonella species present in Peromyscus leucopus mice is not B. henselae.
• The US cases with convincing evidence of B. henselae infection after a tick bite occurred in areas where Lyme disease is not endemic.

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