Table 1.

The number of badgers in each treatment group for the two laboratory vaccine efficacy studies (VES), with vaccine and challenge doses and the median lesion score. (CFU, colony-forming units.)

experiment	treatment group	dose of BCG (CFU ml−1)	dose of M. bovis (CFU ml−1)	number of badgers	median lesion score
VES1	BCG	5.4 × 106	4.8 × 103	3	4
	non-vaccinated	n.a.	4.8 × 103	1	12.5
			3.7 ×103	1
VES2	BCG	3.2 × 106	2.6 × 103	4	4
			2.8 × 103	2
	non-vaccinated	n.a.	2.8 × 103	4	9