His studies focus on the genetics of West Nile virus, specifically how West Nile viral populations have changed since their introduction to North America in 1999. His research examines how the genetic makeup of the virus controls how the virus infects and reproduces in birds and mosquitoes. This work will have application in developing new diagnostic tests and vaccines for the virus, as well as in estimating risks associated with the emergence of new West Nile viruses with altered disease-causing potential. Before coming to UC Davis, Brault worked for the Division of Vector-Borne Diseases of the federal Centers for Disease Control and Prevention. Contact: Aaron Brault, Center for Vectorborne Diseases, (530) 754-8359, acbrault@ucdavis.edu.