TABLE 2.

Proportions of sera fulfilling different diagnostic criteria according to the time elapsed after estimated time of infection

Diagnostic test and diagnostic criterion	% of samples fulfilling criterion at no. of wks after infection (no. of serum specimens examined)
	1 (14)	2 (13)	3 (6)	4 (10)	5 (9)	6–10 (22)	11–15 (13)	16–20 (10)	21–52 (29)
Dye test
≥3 IU/ml	100	100	100	100	100	100	100	100	100
≥300 IU/ml	0	0	0	40	56	68	62	70	31
Platelia Toxo-IgG
≥6 IU/ml	0	100	100	82	89	100	100	100	97
Toxo-Screen DA IgG
Titer, ≥40	50	100	100	100	100	100	100	100	100
Platelia Toxo-IgM
≥100%	93	100	100	100	100	91	92	100	76
Toxo-ISAGA IgM
Index, ≥6	100	100	100	100	89	100	85	90	79
Index, ≥9	93	90	100	100	89	100	77	90	76
Platelia Toxo-IgA
≥100%	21	82a	67	50	75b	77	62	60	45

^aEleven sera were examined. 

^bSeven sera were examined.