WASHINGTON--(BUSINESS WIRE)--The 2011 BIO International Convention, the world’s largest biotechnology event, kicks off today at Walter E. Washington Convention Center in Washington, D.C. Hosted by the Biotechnology Industry Organization, the event is expected to attract more than 15,000 attendees from 48 states and 65 countries. More than 70 percent of those attendees are senior-level leaders from industry, academia and government.