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Borrelia lonestari infection after a bite by an Amblyomma americanum tick.

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Abstract

Erythematous rashes that are suggestive of early
Lyme disease have been associated with the bite of Amblyomma americanum ticks, particularly in the southern United States. However, Borrelia burgdorferi, the causative agent of
Lyme disease, has not been cultured from skin biopsy specimens from these patients, and diagnostic serum antibodies usually have not been found. Borrelia lonestari sp nov, an uncultured spirochete, has been detected in A. americanum ticks by DNA amplification techniques, but its role in human illness is unknown. We observed erythema migrans in a patient with an attached A. americanum tick. DNA amplification of the flagellin gene flaB produced B. lonestari sequences from the skin of the patient that were identical to those found in the attached tick. B. lonestari is a probable cause of erythema migrans in humans.

J Infect Dis. 2001 Jun 15;183(12):1810-4. Epub 2001 May 17. Case Reports; Research Support, U.S. Gov’t, P.H.S.

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