The closest sequences to NA of influenza A virus available in public databases based on percent nucleotide similarity.

<p>The closest sequences to NA of influenza A virus available in public databases based on percent nucleotide similarity.</p

Primers used to sequence the complete NA gene.

<p>Primers used to sequence the complete NA gene.</p

Phylogenetic analysis of neuraminidase of the influenza A virus.

<p>Trees were generated by PAUP 4.0b10 using the maximum likelihood algorithm with the parameters indicated by the GTR Modeltest (bootstrap values are shown for the branch points). The scale bar is shown on the bottom left. In this study, sequences that were available in public databases were used to construct the tree, and the accession numbers along with their branch data are shown.</p

Phylogenetic analysis of the hemagglutinin gene of the influenza A virus.

<p>Trees were generated by PAUP 4.0b10 using the maximum likelihood algorithm with the parameters indicated by the GTR Modeltest (bootstrap values are shown for the branch points). The scale bar is shown on the bottom left. In this study, sequences that were available in the public database were used to construct the tree, and the accession numbers along with their branch data are shown.</p

Surveillance of influenza A viruses in wild birds in Brazil by real-time RT-PCR.

<p>*Sample type: C =  Cloacal, O =  Oral and F =  Feces.</p><p>Surveillance of influenza A viruses in wild birds in Brazil by real-time RT-PCR.</p

Location of sampling sites along the Brazilian coast in relation to the main migration routes and congregation sites of ruddy turnstones in North and South America.

<p>Samples were collected in Jan-May and Aug-Dec from 2006 to 2010. (map by M. Gély ©Cirad, adapted from Wings Over Wetlands UNEP-GEF Flyways Project and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0110141#pone.0110141-Blanco1" target="_blank">[34]</a>.</p

Primers used to sequence the complete HA gene.

<p>Primers used to sequence the complete HA gene.</p