By Isis Chaverri, Regional Communications Director, American Red Cross Indiana Region— INDIANA — The American Red Cross is declaring an emergency blood shortage as the blood supply fell nearly 25% in June. Blood donors are urgently needed to give now to help ensure patients receive lifesaving medical care without delay. The shortage is especially serious for platelets and types O positive and B negative blood. A steep decline in blood donations since the end of May has created a growing gap between supply and patient need. Currently, Red Cross distributions to hospitals are nearly 3,500 units higher per week than…