Volume 14, Number 5—May 2008
Dispatch
Increase in West Nile Neuroinvasive Disease after Hurricane Katrina
Kevin A. Caillouët*
, Sarah R. Michaels*, Xu Xiong*, Ivo Foppa*, and Dawn M. Wesson*
, Sarah R. Michaels*, Xu Xiong*, Ivo Foppa*, and Dawn M. Wesson*
Table 1
West Nile neuroinvasive disease (WNND) before and after Hurricane Katrina for the 3 years before the storm (2002–2004), the year of the storm (2005), and the year after the storm (2006) in Louisiana parishes and Mississippi counties*
| State | Affected areas |
Unaffected areas |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| CDC weeks 32–34† |
CDC weeks 35–37‡ |
CDC weeks 32–34† |
CDC weeks 35–37‡ |
||||||||
| WNND cases | 95% CI | WNND cases | 95% CI | WNND cases | 95% CI | WNND cases | 95% CI | ||||
| Louisiana | |||||||||||
| 2002 | 22 | 14.6–33.3 | 8 | 4.1–15.8 | 37 | 26.9–51.0 | 20 | 13.0–30.9 | |||
| 2003 | 2 | 0.6–7.2 | 3 | 1.09–8.8 | 18 | 11.4–28.5 | 16 | 9.9–26.0 | |||
| 2004 | 1 | 0.2–5.6 | 1 | 0.2–5.6 | 23 | 15.4–34.5 | 11 | 6.2–19.7 | |||
| 2005 | 0 | 0–3.0§ | 11 | 6.2–19.7§ | 28 | 19.4–40.5 | 12 | 6.9–21.0 | |||
| 2006 |
11 |
6.2–19.7 |
8 |
4.1–15.8 |
13 |
7.7–22.2 |
16 |
9.9–26.0 |
|||
| Mississippi | |||||||||||
| 2002 | 13 | 7.7–22.2 | 12 | 6.9–21.0 | 38 | 27.7–52.2 | 21 | 13.8–32.1 | |||
| 2003 | 3 | 1.1–8.8 | 3 | 1.1–8.8 | 5 | 2.2–11.7 | 4 | 1.6–10.2 | |||
| 2004 | 1 | 0.2–5.6 | 2 | 0.6–7.2 | 12 | 6.9–21.0 | 4 | 1.6–10.2 | |||
| 2005 | 0 | 0–3.0§ | 10 | 5.5–18.4§ | 8 | 4.1–15.8 | 10 | 5.5–18.4 | |||
| 2006 | 12 | 6.9–21.0 | 9 | 4.8–17.1 | 14 | 8.4–23.5 | 9 | 4.8–17.1 | |||
*CDC, Centers for Disease Control and Prevention; CI, confidence interval (Poisson).
†3 weeks before landfall of hurricane.
‡3 weeks after landfall of hurricane.
§p<0.05.
Page created: July 08, 2010
Page updated: July 08, 2010
Page reviewed: July 08, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.