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(A) Splitstree based on the complete S-segment coding sequence of all PUUV strains. (B to D) Splitstrees based on partial sequences. (B) nt 1 to 400. (C) nt 401 to 1100. (D) nt 1101 to 1344. Two strains of each PUUV lineage are included together with two Baltic PUUV strains.
