The American Red Cross is making the urgent demand saying donors of all blood types are needed across the country.
Summer typically sees a dip in donations and so far they're down 10 percent this month nationwide.
The agency says every blood donation can help save as many as 3 lives.
To find a local blood drive, go to http://www.redcross.org/donate/give/ or call 1-800-RED CROSS (1-800-733-2767).
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