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. 2021 Apr 15;73(6):e1329–e1336. doi: 10.1093/cid/ciab281

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Figure 2. — Graphic representation of case 16. A, Viral sequences are aligned against severe acute respiratory syndrome coronavirus 2 reference sequence Wuhan-Hu-1 (MN908947.3). Vertical markers denote the location of consensus nucleotide differences between patient viruses and the reference. Purple vertical markers indicate identical viral sequences. B, Time-resolved phylogenetic tree built using Nextstrain tools with all Wisconsin sequences available as of 15 January 2021. Viruses involved in this case are denoted with thick branches and labeled tips. Color denotes clade. Abbreviation: HCP, healthcare personnel.