Incidence of influenza A and B viruses identified from clinical samples between 2010 and 2014.

<p>(A) The distribution of the influenza isolates for each month, including influenza B (light blue color), influenza A(H1N1)pdm09 (red color), and influenza A(H3N2) (yellow color) shown as bars (left scale). From the total number of specimens collected every month, the percent of influenza-positive cases are shown as grey color area under the curve (right scale). (B) Bar graph illustrating only the total number of influenza B infection monthly (left scale) relative to the number of total specimens collected each month are shown in gray (right scale).