Table 3.

Antiviral activity rating associated with percentage reduction of virus growth.

Antiviral Activity Value (Mv)	Efficacy Rating	Mv Value	Reduction (%)
$2\le \mathrm{Mv}<3$	Good Effect Level	1	90
		2	99
		3	99.9
$\mathrm{Mv}\ge 3$	Excellent Effect Level	4	99.9
		5	99.999