Table 2. Results of a time-trial experiment with serum samples from a WNV-infected person, South Africa*.

Days after exposure to WNV	IgM ELISA†	Neutralization assay (titer)	Nested PCR
0	Neg	Neg	Neg
8	Neg	Neg	Pos
9	Neg	Neg	Pos
10	Neg	Neg	Neg
11	Neg	Neg	Neg
13	Neg	Pos (20)	Neg
16	Pos	Pos (40)	Neg
26	Pos	Pos (40)	Neg
30	Pos	Pos (80)	Neg