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. 2017 Mar 9;12(3):e0173470. doi: 10.1371/journal.pone.0173470

Fig 1. Avian influenza virus subtype distribution in wild birds and poultry, the Netherlands, 2006–2011.

Fig 1

Subtype distribution shown for poultry and wild bird species for the hemagglutinin, HA (A) and neuraminidase, NA (B). Distribution based on 70 poultry cases (70 HA and 32 NA known) and 542 wild bird virus isolates (i.e. 250 mallards, 20 other ducks, 40 geese, 16 swans, 201 gulls and 15 waders). Subtype distribution in wild birds in time shown for the HA (C) and NA (D) was based on virus isolates. Subtype distribution in poultry in time shown for the HA (E) and NA (F) was based on antibody detection and/or virus isolation. Black dots indicated number of virus positive farms per month.