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首页> 外文期刊>Journal of Clinical Microbiology >Ornithodoros savignyi, the Tick Vector of 'Candidatus Borrelia kalaharica' in Nigeria
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Ornithodoros savignyi, the Tick Vector of 'Candidatus Borrelia kalaharica' in Nigeria

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Endemic tick-borne relapsing fever (TBRF) has not been documented in Nigeria, yet clinically compatible cases have been described, and soft tick species are endemic in surrounding countries. Consequently, our aim was to investigate if TBRF-associated Borrelia is present in Nigeria. To address this, we examined 49 soft tick pools to identify the tick species and to screen for Borrelia. The tick species was revealed by 16S rRNA gene amplification and Sanger sequencing to be Ornithodoros savignyi, an aggressive, multihost, rapidly feeding species with significant veterinary impact. We detected a Borrelia organism in 3 of 49 pooled samples (6). Molecular analysis of amplified 16S rRNA and flagellin genes and intragenic spacer fragments disclosed that this Borrelia organism was synonymous with the recently described z organism "Candidatus Borrelia kalaharica," identified in a tourist returning to Ger- many from South Africa. Given the widespread endemic range of this tick vector, TBRF should be considered part of the differential diagnosis for patients with fever returning from arid areas of Africa and further afield.

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