Brigham and Women's Hospital Mar 30 2026 A new study led by investigators from Mass General Brigham and Yale School of Public Health reveals that red blood cell exchange transfusion (ET) may provide critical benefits for patients hospitalized with severe babesiosis. Babesiosis is a tick-borne parasitic disease that infects red blood cells and can have life-threatening complications. ET, a procedure sometimes used in severe cases, involves removing a patient's infected red blood cells and