Table 1.

Summary of the results from the virulence study as presented in Figs 1 and 2.

S. suis isolate	No. of pigs	Mortality (%)	Mean No. of days until death	Specific symptoms No. obs/total No. obs
21853	8	13	7.6	4/128
21900	8	25	7.5	11/128
21970	7	100	1.3	20/22
8067	7	100	1.6	25/36