Volume 9, Number 9—September 2003
Research
Aseptic Meningitis Epidemic during a West Nile Virus Avian Epizootic
Kathleen G. Julian*
, James A. Mullins†, Annette Olin‡, Heather Peters§, W. Allan Nix†, M. Steven Oberste†, Judith C. Lovchik¶, Amy Bergmann§, Ross J. Brechner§, Robert A. Myers§, Anthony A. Marfin*, and Grant L. Campbell*
, James A. Mullins†, Annette Olin‡, Heather Peters§, W. Allan Nix†, M. Steven Oberste†, Judith C. Lovchik¶, Amy Bergmann§, Ross J. Brechner§, Robert A. Myers§, Anthony A. Marfin*, and Grant L. Campbell*
Table 2
Enterovirus meningitis cases by age group, identified at six investigation hospitals, Baltimore, Maryland, summer 2001
| Age group (y) | Aseptic meningitis cases | % Test-positivea for enterovirus (no. test-positive/no. tested for enterovirus) |
|---|---|---|
| <1 |
12 |
80 (8/10) |
| 1–10 |
24 |
94 (15/16) |
| 11–20 |
29 |
50 (11/22) |
| 21–30 |
11 |
75 (3/4) |
| 31–40 |
26 |
38 (5/13) |
| 41–50 |
5 |
33 (1/3) |
| >50 |
6 |
0 (0/2) |
| All | 113 | 61 (43/70) |
aThirty-four (79%) of the 43 enterovirus meningitis cases had a positive viral culture or polymerase chain reaction test result of cerebrospinal fluid (CSF) specimens. Seven cases had negative CSF tests and were only diagnosed by positive viral culture of nasopharyngeal or rectal swab specimens. Two additional cases did not have sufficient CSF available for testing and were diagnosed by positive culture of nasopharyngeal or rectal swab specimens.
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