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. 2022 Oct 27;13(6):e02540-22. doi: 10.1128/mbio.02540-22

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FIG 7 — Frequency of known and potential host-adaptive mutations associated with airborne transmission. To determine whether the number of host adaptive mutations was associated with sequential transmission, the frequency at which a given number of known or potential host-adaptive mutations was determined for DI, RC1, and RC2 ferrets. Panels display the findings for A/California/07/2009 (pH1N1) (A), A/Texas/50/2012 (H3N2) (B), A/seal/New Hampshire/179629/2011 (H3N8) (C), and A/Anhui/1/2013 (D) viruses, respectively.