Table 1.

SARS virus decay due to the bubbling process as measured during the 4-h continuous operation

Number of experiment	Initial concentration (lg TCID50 ml−1)		Concentration after 2 h, (lg TCID50 ml−1)		Concentration after 4 h, (lg TCID50 ml−1)
	Sterile water	Hank's solution	Sterile water	Hank's solution	Sterile water	Hank's solution
1	4.25±0.50	4.00±0.50	3.00±0.25	3.50±0.25	1.75±0.25	2.25±0.50
2	4.50±0.75	4.25±0.75	3.25±0.25	3.50±0.50	1.50±0.50	2.50±0.75
3	4.25±0.75	4.25±0.75	3.00±0.50	3.25±0.75	2.00±0.50	2.50±0.50
Average	4.33±0.67	4.17±0.67	3.08±0.33	3.42±0.50	1.75±0.42	2.41±0.58