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Volume 23, Number 8—August 2017

Dispatch

West Nile Virus Outbreak in Houston and Harris County, Texas, USA, 2014

Diana Martinez, Kristy O. MurrayComments to Author , Martin Reyna, Raouf R. Arafat, Roberto Gorena, Umair A. Shah, and Mustapha Debboun
Author affiliations: Harris County Public Health, Houston, Texas, USA (D. Martinez, M. Reyna, R. Gorena, U.A. Shah, M. Debboun); Baylor College of Medicine and Texas Children’s Hospital, Houston (K.O. Murray); Houston Health Department, Houston (R.R. Arafat)

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Table 1

Demographics and attack rates of West Nile virus cases reported to HCPH and HHD, Houston/Harris County, Texas, USA, 2014*

Case-patient characteristics All case-patients, no. (%), n = 139 Attack rate†/100,000 population WNF, no. (%), n = 34 WNND, no. (%), n = 105
Sex
M 96 (69) 4.5 26 (76) 70 (67)
F
43 (31)
2.0
8 (24)
35 (33)
Age, y
˂18 5 (4) 0.4 1 (3) 4 (4)
18–24 3 (2) 0.7 1 (3) 2 (2)
25–44 25 (18) 1.9 6 (18) 19 (18)
45–64 52 (37) 5.2 11 (32) 41 (39)
˃65
54 (39)
14.5
15 (44)
39 (37)
Race/ethnicity
White, non-Hispanic 73 (53) 5.3 17 (50) 56 (53)
Black 19 (14) 2.4 6 (18) 13 (12)
White, Hispanic 30 (22) 1.7 4 (12) 26 (25)
Asian 2 (1) 0.7 1 (3) 1 (1)
Other/unknown 15 (11) NA 6 (18) 9 (9)

*HCPH, Harris County Public Health; HHD, Houston Health Department; WNF, West Nile fever; WNND, West Nile neuroinvasive disease; NA, not applicable.
†Attack rates based on 2014 population estimates from the Texas State Data Center (3), accessed February 10, 2017. Total population of Harris County = 4,269,608.

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