Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

Volume 14, Number 5—May 2008

Dispatch

Increase in West Nile Neuroinvasive Disease after Hurricane Katrina

Kevin A. Caillouët*Comments to Author , Sarah R. Michaels*, Xu Xiong*, Ivo Foppa*, and Dawn M. Wesson*
Author affiliations: *Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana, USA;

Main Article

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.

Main Article

TOP