Table 2. Table showing mean viral loads for rRT-PCR confirmed symptomatic and asymptomatic cases in the middle school in Shandong and the primary school in Guizhou.

Location	Case number	Mean viral load amongstSymptomatic cases*	Mean viral load amongst Asymptomatic cases*	P value
Shandong	38 (33.04%)	38.9	66.5	0.594
Guizhou	77 (66.96%)	7.9	5.6	0.422
Total	115	17.8	26.2	0.63

^*pH1N1 copies per β-actin.