Table 7. The LB-vaccine is highly efficacious when administered at a nanogram dose.

Treatment		Infected/Total
Immunogen	Dose	Exp. 1	Exp. 2
LB-vaccine	1.5 µg	1/7**	0/9**
	0.15 µg	0/6**	0/10**
	0.015 µg	1/7**	1/9*
Placebo	–	7/7	7/9

Immunized mice were challenged with B. afzelii infected ticks, in two separate experiments and only data from mice where at least one fully fed tick was collected are presented. The p-values were calculated with Fisher’s exact test (two tailed); * p<0.05 and ** p<0.01.