Babesia in the U.S. Blood SupplyThe CDC has known for years that relatively healthy individuals infected with Babesia can unknowingly donate contaminated blood.
By Lonnie Marcum
I n December 2016, the American Red Cross published the results of a two-year study into the U.S. blood supply. They were specifically looking for an infectious parasite known as Babesia in donated blood, and they found it in 335 of the samples they tested.