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New Genotypes of Coxiella burnetii Circulating in Brazil and Argentina

机译：巴西和阿根廷循环的Coxiella Burnetii的新基因型

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Coxiella burnetii, the zoonotic agent of Q fever, has a worldwide distribution. Despite the vast information about the circulating genotypes in Europe and North America, there is a lack of data regarding C. burnetii strains in South America. Here, we show the presence of novel multispacer sequence typing (MST) genotypes of C. burnetii in two clusters detected in Brazil and Argentina that seem to be distant in parenthood. Argentinian strains isolated from a tick belongs to a new phylogenetic branch of C. burnetii, and the Brazilians strains may be related to MST 20 and 61. Multilocus variable number tandem repeats analysis (MLVA) typing provided a deeper resolution that may be related to host clusters of bovines, caprine, ovine, and ticks. Our results corroborate with the reports of geotypes of C. burnetii. Thus, we highlight the need for more genotyping studies to understand the genetic diversity of C. burnetii in South America and to confirm the hypothesis of host-related genotypes. We also emphasize the importance of virulence studies for a better understanding of Q fever in the region, which may help in surveillance and disease prevention programs.
机译：Coxiella Burnetii，Q发烧的人畜共患剂，具有全球分布。尽管有关欧洲和北美的循环基因型的广泛信息，但南美洲的C.Burnetii菌株缺乏数据。在这里，我们展示了在巴西和阿根廷检测到的两种簇中C.Burnetii的新型多立面间序列类型（MST）基因型的存在。从蜱分离的阿根廷菌株属于C.Burnetii的新系统发育分支，巴西菌株可能与MST 20和61相关。多层可变数量串联重复分析（MLVA）键入提供了与主机有关的更深层次分辨率牛群，caprine，绵羊和蜱虫。我们的结果与C.Burnetii的岩石术语报告提供了证实。因此，我们强调了需要更多基因分型研究，以了解南美洲C.Burnetii的遗传多样性，并确认宿主相关基因型的假设。我们还强调了毒力研究在该地区更好地理解Q发烧的重要性，这可能有助于监测和疾病预防计划。

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