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Volume 9, Number 3—March 2003

Dispatch

Persistence of Virus-Reactive Serum Immunoglobulin M Antibody in Confirmed West Nile Virus Encephalitis Cases

John T. Roehrig*Comments to Author , Denis Nash†, Beth Maldin†, Anne Labowitz†, Denise A. Martin*, Robert S. Lanciotti*, and Grant L. Campbell*
Author affiliations: *Centers for Disease Control and Prevention, Fort Collins, Colorado, USA; †New York City Department of Health, New York, New York, USA

Main Article

Table 1

IgM and IgG P/N values of WNV virus patient serum samples by days after onseta

Case no. Sample Days after onset WNV IgM WNV IgG
1
S1
12
14.3
2.0
S2
197
3.9
7.8
S3
340
3.5
8.2
S4
498
2.8
nda
2
S1
97
12.0
5.3
S2
378
3.2
nd
3
S1
72
8.2
5.0
S2
186
7.3
7.0
S3
388
1.0
nd
4
S1
27
17.3
3.4
S2
311
2.7
6.4
5
S1
31
11.0
5.5
S2
215
2.8
7.9
S3
374
1.3
nd
6
S1
39
5.9
2.8
S2
173
7.6
3.9
S3
332
3.5
4.3
S4
502
3.1
nd
7
S1
29
11.5
4.8
S2
189
6.7
6.3
S3
332
2.7
6.2
S4
536
2.8
nd
8
S1
3
3.3
6
S2
15
10.7
5.0
S3
30
nd
5.3
S4
43
4.1
5.4
S5
204
3.5
6.2
S6
343
2.2
7.0
S7
508
1.8
nd
9
S1
21
13.6
4.4
S2
199
1.7
3.2
10
S1
55
9.0
3.7
S2
189
10.8
6.0
11
S1
17
24.6
5.2
S2
255
3.6
4.3
S3
336
3.1
7.5
S4
512
6.9
nd
12
S1
11
13.4
5.3
S2
13
15.0
5.6
S3
24
11.4
5.8
S4
533
1.8
nd
13
S1
8
16.7
3.4
S2
202
4.2
nd
14
S1
16
7.8
2.4
S2
30
3.5
5.6
S3
349
1.7
7.0
15
S1
17
17.2
5.6
S2
192
2.2
6.3
S3
335
1.4
6.8
16
S1
7
14.0
2.0
S2
29
24.5
3.7
S3
338
6.5
6.6
17
S1
79
8.5
5.7
S2
200
7.5
4.5
S3
337
4.1
4.6
S4
525
3.6
nd
18
S1
50
7.3
4.8
S2
55
6.6
3.3
S3
68
4.4
nd
S4
207
2.9
7.3
S5
505
1.3
nd
19
S1
4
10.5
4.0
S2
14
7.3
4.1
S3
355
1.3
nd
20
S1
29
18.0
3.1
S2
257
3
8.8
S3
373
1.7
nd
21
S1
1
10.1
3.6
S2
7
9.2
3.5
S3
180
1.2
2.8
22
S1
6
25.7
2.4
S2
185
9.1
6.9
S3
319
3.4
8.2
S4
497
4.2
Nd
23
S1
25
12.3
5.5
S2
204
3.0
7.2
S3
529
1.7
nd
24
S1
4
11.4
3.2
S2
8
9.1
3.5
S3
14
19.6
2.7
S4
212
2.9
6.3
S5
361
1.9
nd
25
S1
9
9.1
4.8
S2
34
6.7
5.2
S3
223
1.5
5.0
26
S1
10
14.8
2.3
S2
22
16.1
3.7
S3
191
10.4
3.2
S4
387
3.4
nd
S5
514
5.2
nd
27
S1
3
11.1
3.7
S2
180
7.8
5.8
S3
322
5.1
8.3
S4
518
2.4
nd
28
S1
26
4.9
6.0
S2
32
4.3
5.6
S3
298
2.2
nd
29 S1
217
2.4
6.7
S2 351 1.8 8.1

a Ig, immunoglobulin; P/N, positive-to-negative; WNV, West Nile virus nd, not done.

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