TABLE 1.

Number of infected mice per group in which viable CFU were found in either the lungs or spleen, both the lungs and spleen, or neither of them at the 30th and 34th weeks postinfection^a

Wk	Strain	No. of mice with viable CFU/total no. of mice				% relapse
		Lungs only	Spleen only	Both organs	Neither organ	Lungs	Spleen
30	Rv	6/6	4/6	4/6	0/6	100	66.6
	RvΔG	1/6	1/6	1/6	5/6	16.6	16.6
	RvΔG	6/6	4/6	4/6	0/6	100	66.6
34	Rv	8/10	8/10	8/10	2/10	80	80
	RvΔG	1/10	0/10	0/10	9/10	10	0
	RvΔG	9/10	6/10	6/10	1/10	90	60

^aPercent relapse depicts the percentage of animals in which viable CFU were found in the lungs or spleen.