Pensacola, Florida December 14, 2011 –Northwest Florida Blood Services announces an immediate need for O Negative blood donors. Holiday season emergencies, accidents and surgeries are showing increased usage of O Negative blood type by local hospitals. O Negative blood donors are asked to come to the NFBS blood centers in Pensacola, Ft Walton and Panama City to support the immediate need. Pensacola location is at 2209 N. 9th Avenue Center and the 1999 E. Nine Mile Road Center open 8am to 6pm.