Table 1.

Acquired Homotypic and Heterotypic Immunity Against Oculogenital Chlamydia trachomatis Serovars Following Female Genital Tract Infection in Mice

Infection Serovar		Number of Animals	Number of Animals Culture Positive on Reinfection Day																		Median Duration of Infection	Wilcoxon Rank Sum p Value
Initial1	Reinfection		2	4	6	8	10	14	17	21	24	28	31	35	38	42	45	48	52	55
D	H	12	12	5	3	2	5	2	1	0	0	0	0	0	0	0	0	0	0	0	5	<0.01
H	H	12	12	11	8	8	10	3	1	2	0	0	0	0	0	0	0	0	0	0	10	~0.10
None	H	12	12	12	12	12	11	6	5	2	2	1	0	0	1	0	0	0	0	0	15.5	--
D	D	12	12	9	7	9	7	5	4	2	2	1	0	0	0	0	0	0	0	0	12	<0.01
H	D	12	12	12	12	12	11	6	10	7	7	4	1	2	1	0	0	0	0	0	24	NS
None	D	12	12	12	12	12	11	7	5	6	4	4	2	1	1	2	0	0	0	0	22.5	--

¹Median duration of infections during the primary infection phase of this study were 10 days with serovar H and 33 days with serovar D.