Figure 3

Monthly detection rate of HRV and subtypes from 2009 to 2012.
The lines for the HRV, HRV-A, HRV-B and HRV-C detection rates use the primary y-axis and the histograms for the sample number in every month use the secondary y-axis.
Monthly detection rate of HRV and subtypes from 2009 to 2012.
The lines for the HRV, HRV-A, HRV-B and HRV-C detection rates use the primary y-axis and the histograms for the sample number in every month use the secondary y-axis.