title: Phylogenetic exploration of hantaviruses in Paraguay reveals reassortment and host switching in South America.
abstract: BACKGROUND
  Longitudinal mark-recapture studies of rodents in two sites in the Mbaracayú Biosphere Reserve in the Interior Atlantic Forest of eastern Paraguay have revealed a complex and intriguing pattern of hantaviruses harbored by rodents in this area. Full-length sequencing and phylogenetic analyses were conducted for several rodents from Akodon montensis and Oligoryzomys fornesi. The phylogenetic relationships of these viruses were analyzed in the context of hantaviruses in South America with published S- and M-segment sequences.
  
  
  RESULTS
  Phylogenetic analyses of hantaviruses identified in the Mbaracayú Biosphere Reserve in Paraguay revealed Jabora and Juquitiba viruses are harbored by Akodon montensis and Oligoryzomys fornesi, respectively. These analyses revealed that in general the constituents of the major subclade for the S- and M-segments differ for the South American hantaviruses. Further, the two major groups within subclade C for the M-segment reflect in general the lethality associated with the viruses within each group.
  
  
  CONCLUSIONS
  Phylogenetic studies of Jabora and Juquitiba viruses and other Paraguayan viruses in the context of American hantaviruses revealed reassortment and host-switching in the evolution of South American hantaviruses.
authors.affiliation: Center for Predictive Medicine for Biodefense and Emerging Infectious Diseases, Louisville, KY 40222, USA.
authors.forename: Yong-Kyu
authors.initials: YK
authors.lastname: Chu
authors.forename: Robert D
authors.initials: RD
authors.lastname: Owen
authors.forename: Colleen B
authors.initials: CB
authors.lastname: Jonsson
mesh_terms: D000818:Animals; D016000:Cluster Analysis; D016679:Genome, Viral; D006476:Orthohantavirus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000472:pathogenicity*; D058507:Host Specificity; D010239:Paraguay; D010802:Phylogeny; D012367:RNA, Viral / Q000235:genetics; D016865:Reassortant Viruses / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000472:pathogenicity*; D017422:Sequence Analysis, DNA; D016205:Sigmodontinae / Q000821:virology*
chemical_list: D012367:RNA, Viral