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

Volume 13, Number 12—December 2007

Dispatch

Risk Factors for West Nile Virus Neuroinvasive Disease, California, 2005

Cynthia M. Jean*Comments to Author , Somayeh Honarmand*, Janice K. Louie*, and Carol A. Glaser*
Author affiliations: *California Department of Public Health, Richmond, California, USA;

Main Article

Table 1

Characteristics of WNV cases reported in California, 2005*

Characteristic WNND, no./total (%) WNF, no./total (%) 95% Confidence interval p value†
Sex, M 188/305 (62) 270/534 (51) 1.18–2.09 <0.01
Age, y
<18 12/305 (4) 19/534 (4) 0.53–2.32 0.85
18–44 73/305 (24) 180/534 (34) 0.45–0.85 <0.01
45–64 121/305 (40) 240/534 (45) 0.61–1.07 0.15
65–74 51/305 (17) 61/534 (11) 1.09–2.33 0.03
>75
48/305 (16)
33/534 (6)
1.78–4.53
<0.0001
Symptom
  Fever 254/283 (90) 315/456 (69) 2.54–6.04 <0.0001
  Headache 202/262 (77) 387/483 (80) 0.58–1.20 0.33
  Rash 54/244 (22) 239/469 (51) 0.19–0.39 <0.0001
  Muscle pain/weakness 215/274 (78) 393/485 (81) 0.59–1.23 0.40
  Seizures 11/153 (7) 2/313 (0.6) 2.64–55.06 0.001
  Altered mental status 148/275 (54) 68/463 (15) 4.77–9.61 <0.0001

*WNV, West Nile virus; WNND, West Nile neuroinvasive disease; WNF, West Nile fever.
†Fisher exact test, 2-tailed.

Main Article

TOP