Severe babesiosis presenting with high-grade parasitemia exceeding 10%, severe hemolytic anemia, or significant compromise of pulmonary, renal, or hepatic function represents a high-acuity clinical situation requiring prompt, structured intervention.
This protocol applies when severe babesiosis is accompanied by parasitemia above 10%, severe hemolytic anemia, or evidence of severe end-organ involvement — including pulmonary, renal, or hepatic compromise. Any one of these findings qualifies a patient for this management pathway.
In this setting, management involves a transfusion-based intervention combined with antimicrobial therapy. The complete selection and sequencing of interventions — including the specific conditions under which each is applied — is detailed in the full protocol.
Clinical goal: reduction in Babesia parasitemia.
DOI: 10.1093/cid/ciab275
Exchange transfusion may be considered for patients with high-grade parasitemia (>10%) or who have any one or more of the following: severe hemolytic anemia and/or severe pulmonary, renal, or hepatic compromise.
In selected patients with severe babesiosis, we suggest exchange transfusion using red blood cells (weak recommendation, low-quality evidence).
Expert consultation with a transfusion services physician or hematologist in conjunction with an infectious diseases specialist is strongly advised.
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