Table 2. Summary of viral titers, lethality of H1N1pdm isolates in DBA2 mice.

Inoculum	DPI	Virus titer (Lung)	Lethality
Mock	3	<1.5 *	0.0
	6	<1.5 *	0.0
KY/80M	3	7.2±0.5	0.0
	6	6.4±0.9	33.3
KY/80E	3	7.6±0.1	0.0
	6	7.0±0.3	33.3
KY/96M	3	7.0±0.5	0.0
	6	7.2±0.5	0.0
KY/96E	3	7.3±0.4	0.0
	6	7.4±0.4	100.0
KY/99M	3	6.4±0.2	0.0
	6	5.8±0.7	0.0
KY/99E	3	7.4±0.9	0.0
	6	7.3±0.3	33.3
KY/104M	3	6.6±0.9	0.0
	6	6.9±0.5	33.3
KY/108M	3	7.5±0.6	0.0
	6	6.6±0.4	0.0
KY/108E	3	6.5±0.5	0.0
	6	6.4±0.8	33.3
KY/110M	3	5.9±0.4	0.0
	6	6.2±0.9	0.0
KY/110E	3	5.9±0.2	0.0
	6	6.8±0.7	0.0
KY/136M	3	5.3±0.3	0.0
	6	5.8±0.9	0.0
KY/136E	3	5.8±0.4	0.0
	6	5.2±0.5	0.0
KY/180M	3	6.8±0.3	0.0
	6	5.7±0.7	100.0
KY/180E	3	6.9±0.4	33.3
	6	6.4±0.1	66.7
KY/190M	3	6.8±0.5	0.0
	6	6.3±0.3	100.0
NY/18E	3	6.9±0.6	0.0
	6	6.8±1.0	33.3
CA/07E	3	7.2±0.6	0.0
	6	6.9±0.8	0.0
BN/59E	3	6.7±0.0	0.0
	6	5.9±0.1	0.0

Legend: Virus titer (log10 TCID₅₀/mL at a limit of detection = 10^1.5 TCID₅₀/mL).