Climate Risk Areas Initiative News

CPO Postdoc Karen Holcomb to give seminar on West Nile Virus

  • 19 November 2021
CPO Postdoc Karen Holcomb to give seminar on West Nile Virus

On Friday, December 3, OAR Global Systems Laboratory will host "NOAA-CDC Ventures in Public Health and Weather: Impacts of vector control and weather on mosquito populations and West Nile virus transmission dynamics." The session will feature the work of CPO-funded, joint CDC-NOAA postdoc Dr. Karen Holcomb, PhD, Epidemiology - University of California Davis. 

This seminar grows out of a new NOAA-CDC collaboration aimed at providing a bridge between agencies to jointly address public health concerns, focusing initially on the impact of weather on West Nile Virus  predictions. The objectives of this seminar are to provide a background on West Nile Virus (WNV) transmission and mosquito control practices, highlight the impact of weather on WNV dynamics, and dive into research on the impacts of vector control and weather on WNV. In terms of vector control strategies, the seminar will delve into the evaluation of the spatio-temporal impacts of aerial applications of insecticides and bird-delivered ivermectin on Culex mosquito populations and WNV transmission

Outbreaks of WNV are strongly influenced by environmental and atmospheric drivers. The virus can cause a potentially fatal neuroinvasive mosquito-borne disease and is maintained in an enzootic cycle between birds and Culex mosquitoes but can spill over to cause infections in horses and humans. Common prevention strategies rely on insecticides to reduce the abundance of infectious mosquitoes in proximity to humans, thereby reducing zoonotic transmission risk. However, the degree to which mosquito populations are reduced following applications is highly variable and difficult to measure in operational settings. Alternative vector control strategies, like ivermectin, a drug that increases mosquito mortality when ingested, are under investigation to improve the specificity of control strategies. Weather
has large impacts on both mosquito population and WNV transmission dynamics, thereby indicating it may be a useful piece in WNV predictions.

The seminar will be held on Friday, Dec 3, 2021, at 11:00 AM Eastern.
Register for the seminar »





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