Table 1.

Information for 7 leptospiral vaccine strains used in this study

Species	Serogroup	Serovar	Strain	Host of Isolation	Source of Isolation	Year of Isolation
L. interrogans	Icterohaemorragiae	lai	Lai	Human	Sichuan, China	1958
L. interrogans	Autumnalis	autumnalis	Lin 4	Human	Zhejiang, China	1954
L. interrogans	Pomona	pomona	Luo	Human	Fujian, China	1958
L. interrogans	Grippotyphosa	linhai	Lin 6	Human	Zhejiang, China	1954
L. interrogans	Australis	australis	Wo 34	Human	China	1950s
L. interrogans	Hebdomadis	hebdomadis	Guang 229	Human	Guangdong, China	1950s
L. interrogans	Canicola	canicola	611	Human	China	1950s