TABLE 2.

Competitive index for 0100993 wild type versus 0100993 ΔciaR in intranasal and intraperitoneal infections^a

Mouse	Competitive index
	Intranasal infectionb	Intraperitoneal infectionc
1	0.14	0.07
2	0.12	0.013
3	0.014	0.032
4	0.007	0.03
5	0.012	NDd

^aThe in vivo competitive index was calculated for each animal as the ratio of mutant to wild-type strains divided by the input ratio of mutant to wild type. Intranasal and intraperitoneal infections were done in two separate groups of five mice.

^bMean, 0.059; SEM, 0.02.

^cMean, 0.036; SEM, 0.012.

^dND, none detected.