Table 1. Table showing the number of rRT-PCR confirmed cases for symptomatic and asymptomatic infection groups for the middle school in Shandong and the primary school in Guizhou.

Location	Result	Symptomatic infection	Asymptomatic infection	P value
Shandong	Positive	17 (30.36%)	39 (34.21%)	0.736
	Negative	12 (21.43%)	32 (28.07%)
Guizhou	Positive	21 (37.50%)	30 (26.32%)	0.463
	Negative	6 (10.71%)	13 (11.40%)
	Total	56	114