Laboratory of Arbovirology, Institute of Parasitology, Biology Centre CAS, České Budějovice, Czech Republic.
Laboratory of Emerging Viral Infections, Veterinary Research Institute, Brno, Czech Republic.
Microbiol Spectr. 2022 Oct 26;10(5):e0130622. doi: 10.1128/spectrum.01306-22. Epub 2022 Sep 28.
Orthohantaviruses (genus ) are a diverse group of viruses that are closely associated with their natural hosts (rodents, shrews, and moles). Several orthohantaviruses cause severe disease in humans. Central and western Europe are areas with emerging orthohantavirus occurrences. In our study, several orthohantaviruses, including the pathogenic Kurkino virus (KURV), were detected in their natural hosts trapped at several study sites in the Czech Republic. KURV was detected mainly in its typical host, the striped field mouse (Apodemus agrarius). Nevertheless, spillover infections were also detected in wood mice (Apodemus sylvaticus) and common voles (Microtus arvalis). Similarly, Tula virus (TULV) was found primarily in common voles, and events of spillover to rodents of other host species, including spp., were recorded. In addition, unlike most previous studies, different tissues were sampled and compared to assess their suitability for orthohantavirus screening and possible tissue tropism. Our data suggest possible virus-specific tissue tropism in rodent hosts. TULV was most commonly detected in the lung tissue, whereas KURV was more common in the liver, spleen, and brain. Moreover, Seewis and Asikkala viruses were detected in randomly found common shrews (Sorex araneus). In conclusion, we have demonstrated the presence of human-pathogenic KURV and the potentially pathogenic TULV in their typical hosts as well as their spillover to atypical host species belonging to another family. Furthermore, we suggest the possibility of virus-specific tissue tropism of orthohantaviruses in their natural hosts. Orthohantaviruses (genus , family ) are a diverse group of globally distributed viruses that are closely associated with their natural hosts. Some orthohantaviruses are capable of infecting humans and causing severe disease. Orthohantaviruses are considered emerging pathogens due to their ever-increasing diversity and increasing numbers of disease cases. We report the detection of four different orthohantaviruses in rodents and shrews in the Czech Republic. Most viruses were found in their typical hosts, Kurkino virus (KURV) in striped field mice (Apodemus agrarius), Tula virus (TULV) in common voles (), and Seewis virus in common shrews (). Nevertheless, spillover infections of atypical host species were also recorded for KURV, TULV, and another shrew-borne orthohantavirus, Asikkala virus. In addition, indications of virus-specific patterns of tissue tropism were observed. Our results highlight the circulation of several orthohantaviruses, including KURV, which is pathogenic to humans, among rodents and shrews in the Czech Republic.
正汉坦病毒(Orthohantaviruses)属(Genus )是一组与天然宿主(啮齿类动物、鼩鼱和鼹鼠)密切相关的多样化病毒。一些正汉坦病毒可导致人类严重疾病。中欧和西欧是正汉坦病毒新出现的地区。在我们的研究中,在捷克共和国的几个研究点捕获的天然宿主中检测到了几种正汉坦病毒,包括致病性的库尔基诺病毒(KURV)。KURV 主要在其典型宿主条纹田鼠(Apodemus agrarius)中被检测到。然而,在木鼠(Apodemus sylvaticus)和普通田鼠(Microtus arvalis)中也检测到了溢出感染。同样,图拉病毒(TULV)主要在普通田鼠中被发现,并且记录到了对其他宿主物种的啮齿动物的溢出感染事件,包括 spp.。此外,与大多数先前的研究不同,我们采样了不同的组织并进行了比较,以评估它们用于正汉坦病毒筛查和可能的组织嗜性的适用性。我们的数据表明,在啮齿动物宿主中可能存在病毒特异性组织嗜性。TULV 在肺组织中最常被检测到,而 KURV 在肝脏、脾脏和大脑中更为常见。此外,在随机发现的普通鼩鼱(Sorex araneus)中检测到了 Seewis 和 Asikkala 病毒。总之,我们已经证明了在其典型宿主中存在人类致病的 KURV 和潜在致病的 TULV,以及对属于另一个家族的非典型宿主物种的溢出感染。此外,我们提出了正汉坦病毒在其自然宿主中存在病毒特异性组织嗜性的可能性。正汉坦病毒(属 ,科 )是一组分布广泛的全球病毒,与天然宿主密切相关。一些正汉坦病毒能够感染人类并导致严重疾病。由于其不断增加的多样性和不断增加的疾病病例,正汉坦病毒被认为是新兴的病原体。我们报告了在捷克共和国的啮齿动物和鼩鼱中检测到四种不同的正汉坦病毒。大多数病毒在其典型宿主中被发现,库尔基诺病毒(KURV)在条纹田鼠(Apodemus agrarius)中,图拉病毒(TULV)在普通田鼠()中,以及 Seewis 病毒在普通鼩鼱()中。然而,也记录到了 KURV、TULV 和另一种源自鼩鼱的正汉坦病毒 Asikkala 病毒对非典型宿主物种的溢出感染。此外,还观察到了病毒特异性组织嗜性模式的迹象。我们的研究结果强调了在捷克共和国的啮齿动物和鼩鼱中存在几种正汉坦病毒的循环,包括对人类致病的 KURV。