TABLE 1.

Outcome of pregnancy in C3H/HeJ mice after experimental UTI with E. coli

Group	No. of mice (%)			Day of delivery	No. of mice delivering	% Mortality of pups born (no. died/ total no.)
	Total	Preterm	Term
E. coli Dr+	21	19b (90)	2 (10)	11	1a	53.6cd (37/69)
				12	1a
				15	1a
				16	1a
				17	8a
				18	7a
				19	1
				20	1
E. coli Dr−	10	1 (10)	9 (90)	18	1a	18 (10/55)
				19	2
				20	7
Control	10	0 (0)	10 (100)	19	2	9.5 (6/63)
				20	8

^aAnimals delivering preterm (on or before day 18 of pregnancy; before 90% gestation). 

^bSignificantly different from the values obtained for the E. coli Dr⁻ and control groups (P = 0.03). 

^cSignificantly different from the value obtained for the E. coli Dr⁻ group (P = 0.007). 

^dSignificantly different from the value obtained for the control group (P < 0.001).