Table 1.

Comparison of recovery ratio between developed method (HA vortex) and liquid collector.

Trial	Method	Concentration of Viruses in the Bubbled Water Sample (Copies/mL Water)						Dissipated Water Volume (mL)	Air Volume (m3)	Captured Viruses per Air (Copies/m3 Air)
		Qβ		PV		MNV				Qβ	PV	MNV
		Before	After	Before	After	Before	After
1	HA vortex	2.9 × 108	2.7 × 108	2.5 × 106	1.6 × 106	7.7 × 105	1.5 × 106	2.06	121	1.3 × 102	2.5 × 100	1.9 × 103
	Liquid Collector							4.33	375	6.7 × 101	2.1 × 101	3.2 × 102
2	HA vortex	3.1 × 108	3.3 × 108	2.4 × 106	1.6 × 106	1.4 × 106	7.2 × 105	2.01	121	5.4 × 101	9.5 × 100	3.9 × 102
	Liquid Collector							3.52	375	4.9 × 101	2.3 × 101	1.6 × 102
3	HA vortex	3.3 × 108	2.9 × 108	2.4 × 106	2.1 × 106	1.4 × 106	7.2 × 105	2.02	121	3.5 × 101	1.2 × 101	3.5 × 102
	Liquid Collector							4.37	375	5.5 × 101	2.1 × 101	2.8 × 102

Note: Qβ; Bacteriophage, PV; Poliovirus, MNV; Murine norovirus, Before/After; Virus concentration of the virus-inoculated water sample before/after bubbling (virus generation) manipulation.