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Ann N Y Acad Sci. 2005 Dec;1063:343-5.

Molecular and biological characterization of a novel Coxiella-like agent from Carios capensis.

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Centers for Disease Control and Prevention, Atlanta, GA 30333, USA.


The genus Coxiella is currently defined by a single monotypic species, Coxiella burnetii. Novel Coxiella spp. have been detected in ticks throughout the world. These bacteria have not been cultured or named, and their evolutionary relationships to C. burnetii are poorly known. A novel Coxiella-like agent was detected by PCR amplification and sequencing of DNA extracted from 64 pelican ticks, Carios capensis, from Devoux Bank, South Carolina, USA. PCR was used to amplify and characterize genes from the new bacterium. Sequences from some metabolic and housekeeping genes shared a 92-98% similarity to C. burnetii, but other genes such as the IS1111 transposon, com1, and 5S and 16S rRNA genes were not amplified by conventional PCR. Transovarial and transtadial transmission and environmental shedding of the agent were detected by PCR.

[Indexed for MEDLINE]

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