TABLE 2.

Comparison of ELISA titers^a obtained with three antigens on sequential serum specimens from one patient

Day postonset	IgM titer			IgG titer
	NRA	SMB		NRA	SMB
		NY99	Eg-101		NY99	Eg-101
3b	<1:400	<1:400	<1:400	1:1,600	1:3,200	1:3,200
15	1:6,400	>1:12,800	>1:12,800	1:1,600	1:1,600	1:3,200
30	<1:400	<1:400	1:1,600	1:3,200	1:3,200	1:3,200
43c	<1:400	<1:400	<1:400	1:3,200	1:3,200	1:3,200
204	<1:400	<1:400	<1:400	1:800	1:1,600	1:1,600
344	<1:400	<1:400	<1:400	1:800	1:1,600	1:800

^aTiters were calculated using an absolute P/N ratio cutoff of 3.0. 

^bRandom sample 9 in Table 1. 

^cRandom sample 7 in Table 1.