CONCORD, N.H. — American Red Cross officials around the Northeast are putting out an appeal for blood donors – especially those with type O negative blood.

Type O negative blood is always in high demand because it can be transfused to patients with any blood type, especially in emergency situations.

Carol Dembeck, spokeswoman for the Red Cross in northern New England, says type O negative donors are needed now to help prevent the type O negative blood supply from declining further.

A shortage of type O negative blood often occurs during the summer months when fewer donors are giving because of summer vacations and schools approaching summer break are hosting fewer drives.

People are urged to call 1-800-RED CROSS (1-800-733-2767) or visit redcrossblood.org to find a blood drive and to make an appointment.