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Figure 1: Relationship between Ct values by RT-PCR and influenza positivity by Quickvue. The Ct values obtained for RT-PCR for influenza specific PCR (X-axis) are plotted against percent positivity by Quickvue test (Y-axis). Lower Ct values (proxy for high viral loads) correlated with higher positivity by Quickvue assay.

Figure 1: Relationship between Ct values by RT-PCR and influenza positivity by <i>Quickvue</i>. The Ct values obtained for RT-PCR for influenza specific PCR (X-axis) are plotted against percent positivity by <i>Quickvue</i> test (Y-axis). Lower Ct values (proxy for high viral loads) correlated with higher positivity by <i>Quickvue</i> assay.