Fig. 4

Box and whisker plots of the viral concentration distribution of samples with RIDT/MNCP positive results and RIDT negative and MNCP/rRT-PCR positive results determined by rRT-PCR (log 10 copies/ml). a Influenza A virus. b Influenza B virus. The box showed the median (thick line and number) and interquartile range (box length). The whiskers represented 1.5 times interquartile ranges or the highest/lowest points). MNCP: micro/nanofluidic chip platform; RIDT: rapid influenza diagnostic test; rRT-PCR: real-time reverse transcription PCR