Skip to main content

Table 1 Total number of influenza A positive samples and number of HA/NA sequences analyzed in this study. Influenza surveillance data submitted from 14 countries in MENA region (2009–2017) were obtained from WHO FluNet online database. For evolution analysis, complete HA and NA sequences from pH1N1 and H3N2 viruses were downloaded from Influenza Research Database (IRD)-NCBI. Accession numbers of all vaccine strains are provided in Additional file 1: Table S1

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

Year Dominant Subtype pH1N1 H3N2
Number of positive samples (WHO) Number of sequences analyzed (NCBI) Vaccine strain Number of positive samples (WHO) Number of sequences analyzed (NCBI) Vaccine strain
H1 N1 H3 N2
2009 pH1N1 21,586 132 97 A/California/07/2009 1093 22 5 A/Brisbane/10/2007
2010 pH1N1 4136 68 42 A/California/07/2009 280 1 1 A/Brisbane/10/2007
2011 pH1N1 3717 36 36 A/California/07/2009 2183 22 22 A/Perth/16/2009
2012 H3N2 660 27 29 A/California/07/2009 2373 37 32 A/Perth/16//2009
2013 pH1N1 4395 33 32 A/California/07/2009 1568 13 8 A/Victoria//361/2011
2014 pH1N1 3559 25 25 A/California/07/2009 2883 40 33 A/Texas/50/2012
2015 pH1N1 9742 157 79 A/California/07/2009 1688 47 23 A/Switzerland/9715293/2013
2016 pH1N1 8320 60 2 A/California/07/2009 4784 47 8 A/Hong Kong/4801/2014
2017 pH1N1 10,143 A/Michigan/45/2015 3891 10 A/Hong Kong/4801/2014
Total   66,228 538 342   20,743 239 132