Additional file 4: of Epidemiological and genetic characterization of pH1N1 and H3N2 influenza viruses circulated in MENA region during 2009–2017

Table S3. Accumulation of amino acid substitutions in NA protein of in N2 protein of H3N2 viruses of during 2009–2017: Amino acid substitutions were identified relative to A/Brisbane/2007 vaccine strain. The last column shows the overall prevalence of each substitution in all NA sequences included in study (2009–2017). N2 numbering was used for reporting substitutions. (DOCX 34 kb)