Document Detail


Human west nile virus neuroinvasive disease in Texas, 2003 epidemic: regional differences.
MedLine Citation:
PMID:  16978879     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: Arboviral diseases, such as West Nile virus (WNV) epizootics, tend to be geographically unique because of the biomes that support the vector(s) and reservoir host(s). Understanding such details aids in preventive efforts. We studied the 2003 epidemic of human West Nile neuroinvasive disease (WNND) in Texas because it initially appeared that incidence was not uniform across regions of the state. METHODS: The epidemic was described by age, sex, and region of residence. These variables were used to compare age-specific incidence, standardized cumulative incidence, and age-adjusted relative risk (RR). We verified case data and used routine software, with population estimates from the US Census Bureau. RESULTS: Regardless of sex, risk increased with age. Males had the greater risk (RR, 1.69); however, males aged 5 to 17 years had the greatest RR. Of the five regions compared, two posed more (RRs, 7.98 and 2.14) and one posed less (RR, 0.40) risk than the remainder of the state. Proportions of Culex vector species differed significantly between regions. CONCLUSIONS: During 2003, the risk for WNND varied considerably across Texas. This suggests that various risks for WNV infection deserve additional research for preventive interventions to be regionally appropriate and effective.
Authors:
Ronald D Warner; Robert C Kimbrough; James L Alexander; J Rush Pierce; Tigi Ward; Lawrence P Martinelli
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Publication Detail:
Type:  Journal Article     Date:  2006-09-14
Journal Detail:
Title:  Annals of epidemiology     Volume:  16     ISSN:  1047-2797     ISO Abbreviation:  Ann Epidemiol     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-10-02     Completed Date:  2007-01-17     Revised Date:  2008-06-23    
Medline Journal Info:
Nlm Unique ID:  9100013     Medline TA:  Ann Epidemiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  749-55     Citation Subset:  IM    
Affiliation:
Texas Tech University Health Sciences Center, School of Medicine, Lubbock, TX, USA. ronald.warner@ttuhsc.edu
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Age Factors
Aged
Animals
Child
Child, Preschool
Culicidae
Female
Humans
Male
Risk
Sex Factors
Texas / epidemiology
West Nile Fever / epidemiology*,  transmission

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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