Blood supply slumps in summer months As summer begins to unfold, the Cayuga County Chapter of the American Red Cross urges eligible and new donors to “Give a Little of Their Selves this Summer” and donate blood. Donors are needed because blood donations take a dramatic decline in summer months - as much as 10-15 percent. The temporary loss of school blood drives coupled with summer vacation schedules can create a tenuous environment for the blood supply. |