TABLE 2.

Serogroup and associated mortality rates of the 10 deadliest serovars isolated in the United States between 1996 and 2006^a

Rank	Serovar	Serogroup	Mortality rate (%)
1	Dublin	D	3
2	Muenster	E	2
3	Choleraesuis	C	1.8
	Cerro	K	1.8
5	Johannesburg	R	1.5
6	Tennessee	C	1.3
7	Manhattan	C	1
	Anatum	E	1
9	Bovismorbificans	C	0.9
	Adelaide	O	0.9

^aData obtained from reference 37.