TABLE 1.

Toxoplasmic seroconversion during pregnancy^a

Time after infection	Titerb				No. of sera
	IgG Abc (HSDA/U/ml)	IgM Ab	IgA Ab	IgE Ab (index)
15 days	16 ± 33	11.1 ± 1.6	4.8 ± 3.9	0.39 ± 0.58	61
1 mo	339 ± 571	11.6 ± 0.7	7.5 ± 3.5	0.85 ± 0.95	68
2 mo	790 ± 829	11.5 ± 0.8	8.0 ± 3.4	1.26 ± 0.95	70
3 mo	1,165 ± 970	11.3 ± 0.9	8.0 ± 3.6	1.37 ± 0.97	48
4 mo	1,100 ± 1,240	11.1 ± 1	6.9 ± 3.8	1.17 ± 0.87	43
5 mo	1,300 ± 2,054	11.2 ± 1	6.7 ± 3.9	1.1 ± 1.32	33
6 mo	1,106 ± 2,304	10.1 ± 2.2	6.8 ± 3.3	0.65 ± 0.47	11
7 mo	630 ± 934	10.9 ± 1.5	6.7 ± 3.5	0.5 ± 0.45	12
8 mo	525 ± 536	10.7 ± 1.9	5.4 ± 3.5	0.37 ± 0.22	21
9 mo	740 ± 922	10.9 ± 1.1	5.5 ± 3.5	0.39 ± 0.17	27
12 mo	465 ± 831	10.1 ± 2.9	5.2 ± 4	0.25 ± 0.19	13
15 mo	94 ± 123	10.5 ± 1.9	5.4 ± 2.3	0.29 ± 0.12	10

^aIgG (HSDA), IgM and IgA (ICT), and IgE (ELISA) levels in 104 pregnant women with toxoplasmic seroconversion (group A1; 417 sera) were calculated; results were grouped according to the estimated date of infection.

^bValues are means ± standard deviations. IgM and IgA Ab results are agglutination scores (maximum score, 12).

^cAb, antibody.