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Phylogenetic analysis of PUUV RNA from fatal HFRS case. The sequence of the fatal case is marked by a blue diamond. The nucleotide alignment and phylogenetic analysis of PUUV strains was based on partial S segment sequences of 217 nucleotides in length (nucleotides 378–594). The tree branch lengths were calculated using the average pathway method and have a scale representing the number of changes in the sequence. Red – RUS lineage; Blue – FIN lineage.
