LOS ANGELES, CA -- (MARKET WIRE) -- April 20, 2007 -- Special Assistant to the President for Biodefense Rajeev Venkayya will give the Keynote Address on government efforts to accelerate the development of biodefense medical countermeasures at Infocast 5th annual Biodefense Vaccines & Therapeutics Conference, to be held in Washington, DC June 4 - 6, 2007.