(110517) — GENEVA, MAY 17, 2011 () — BILL GATES, THE CO-CHAIRMAN OF THE BILL MELINDA GATES FOUNDATION, SPEAKS AT A PRESS CONFERENCE FOLLOWING THE KEYNOTE ADDRESS DURING THE 64TH WORLD HEALTH ASSEMLBY IN GENEVA, SWITZERLAND, MAY 17, 2011. BILL GATES CHALLENGED HEALTH MINISTERS AND GLOBAL HEALTH LEADERS TO MAKE VACCINES THEIR TOP PRIORITY TO SAVE MILLIONS OF LIVES. (/YU YANG)(ZCC)