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Maximum parsimony tree representing the relationship of the three near full-length sequences from Singapore with reference sequences. The scale denotes the number of informative site mutations. Bootstrap analysis was performed with 100 replicates. The taxon name of the study sequences represents the year of sample collection (11) followed by country (SG) and unique study identifier (e.g., HM021). The bootstrap value at the node of the newly sequenced strains is shown.
