Please help!
How to describe that G3P[8] was detected in 21.8% which are higher than that of preceding year for 3-fold increase? 
G3P[8] strains have gradually decreased in number since 2004, causing 32.9% cases in 2004/2005, 17.9% cases in 2005/2006 and 7.3% cases in 2006/2007. In the present study, interestingly, G3P[8] was detected for 3-fold increase (21.8%) of those found in 2006/2007. [u]
Many thanks[/u]