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The number of inverted repeat (IR) sequences in monkeypox virus (MPXV) genomes. (A) A comparison between the total number of IR sequences in MPXV genomes obtained between 1958 and 2021 and the current 2022 outbreak. Individual points represent a single MPXV genome. (B–D) The number of IRs composed of 8+, 10+, or 12+ nucleotides. Error bars represent the SD. Data are representative of 136 individual genomes collected between 1958 and 2022.
