. 2009 Dec 18;192(4):955–963. doi: 10.1128/JB.01180-09

TABLE 3.

Competitive growth of El Tor N16961 and classical O395 in rabbit intestine and infant mice

Strain	Growth in ligated rabbit ileal loop model			Growth in infant mouse model
	No. of CFU in cocultures		Competitive index^b	No. of CFU in cocultures		Competitive index^b
	Input	Output^a	Competitive index^b	Input	Output	Competitive index^b
O395	1.5 × 10⁶	3.9 × 10⁸	11.53	1.33 × 10⁵	4.9 × 10⁵	28.3
N16961	1.5 × 10⁶	4.5 × 10⁹		1.06 × 10⁵	1.38 × 10⁷

Output is the total number of CFU in fluid accumulated in the loops plus the total number of CFU in mucosal scrapings. The total number of CFU of each strain in the mucosal scrapings was about 1/10 of the numbers in the fluid.

Competitive index was calculated as follows: (output of N16961/input of N16961)/(output of O395/input of O395), where input and output are numbers of CFU.