Table 1.

Pathogenicity of the Japanese encephalitis vaccine strain in mice

Mouse	LD50
	Suckling mouse S.C.	3-week-old I.P.	4-week-old I.C.
Anyang parent (4 × 107 pfu/mL)	0.01 pfu	80 pfu	0.01 pfu
Anyang285a) (1 × 107 pfu/mL)	-	-	9×103 pfu

These results were originated from Kwon et al. [23].

S.C., subcutaneous; I.P., intraperitonial; I.C., intracerebral route; pfu, plaque forming unit.

^a)The virus passage number in chicken primary embryo fibroblast cells.