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West Nile virus: where are we now?
Bruno P Granwehr1, Kristy M Lillibridge, Stephen Higgs
1Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX 77555-0435, USA. bpgranwe@utmb.edu
The Lancet. Infectious Diseases
|September 1, 2004
Summary
West Nile virus (WNV) research has advanced, but key questions remain regarding its spread, vector potential, and genetic adaptation. Further study is crucial for effective WNV disease control strategies.
Area of Science:
- Virology
- Epidemiology
- Public Health
Background:
- Significant advancements in West Nile virus (WNV) understanding since 2002.
- Progress in WNV transmission, epidemiology, geographic spread, and disease manifestations noted.
- Developments in WNV diagnostics, therapeutics, and vaccines have occurred.
Purpose of the Study:
- To provide an update on WNV biology and recent field advances.
- To highlight unanswered questions and emerging issues in WNV research.
- To guide future research and public health strategies for WNV control.
Main Methods:
- Literature review of WNV research published in the last two years.
- Analysis of current knowledge on WNV transmission dynamics.
- Synthesis of data on WNV epidemiology and geographic expansion.
Main Results:
- WNV continues to spread, raising concerns about expansion to new regions like the Pacific coast and South America.
- The role of non-mosquito arthropods as WNV vectors requires further investigation.
- Potential for WNV genetic and phenotypic alterations due to ecosystem adaptation is a key concern.
Conclusions:
- Despite progress, critical questions about WNV's future trajectory and impact persist.
- Ongoing research is essential to address WNV spread, vector competence, and viral evolution.
- Collaboration among academic, industrial, and public health sectors is vital for effective WNV disease management.