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. 2017 Dec 6;6(12):e110. doi: 10.1038/emi.2017.98

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Copyright © 2017 The Author(s)

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Reactivity data for serum samples from wild mallard ducks. (A) Reactivity profiles of eight serum samples from wild mallard ducks. HA subtypes, clades and groups are indicated on the x-axes of the panels. Sera from individual captive mallards experimentally infected with H3N8 (B), H4N5 (C) or H3N8 followed by H4N5 (D) are shown as comparison. hemagglutinin, HA.