Table 1. Cross-neutralization of sera from rabies vaccinated humans and animals against IKOV.

Neutralizing antibody titres against RABV (Challenge virus standard, CVS) and IKOV in reciprocal 50 % end point titres. International units (IU) are given for rabies by comparison to a standard control (not applicable to IKOV). Mice 3, 4 and 5 were inoculated IM with IKOV at 10^3.8 TCID₅₀ ml⁻¹ and survived. Rabbit 821 is rabbit anti-WCBV serum with a reciprocal titre of 1448 against WCBV. nd, not done.

	Virus
	CVS (100 TCID50)		IKOV (100 TCID50)
Sample ID	IU ml−1	Reciprocal titre	Reciprocal titre
HUMAN - 1	23	959	<8
HUMAN - 2	31	1 263	<8
HUMAN - 3	1 093	34 092	<8
HUMAN - 4	1 093	34 092	<8
DOG 1	53	1 263	<8
DOG 2	41	960	<8
DOG 3	1 094	25 904	<8
DOG 4	122	2 878	<8
DOG 5	365	8 635	<8
DOG 6	1	16	<8
DOG 7	1 094	34 109	<8
DOG 8	364	11 364	<8
DOG 9	14	421	<8
DOG 10	41	1 263	<8
HRIG	270	nd	<16
Mouse 3	<0.2	<16	27
Mouse 4	<0.2	<16	420
Mouse 5	nd	nd	81
Rabbit 821	<0.2	<16	<8