Abstract
Babesiosis was reported in a California resident who received a transfusion of blood products collected in the disease-endemic northeastern region of the United States. Babesiosis should be considered year-round in the diagnosis of febrile and afebrile patients with abnormal blood cell counts who have received blood products from disease-endemic areas.
Highlights
Babesiosis was reported in a California resident who received a transfusion of blood products collected in the disease-endemic northeastern region of the United States
The result of PCR analysis performed by a commercial laboratory was positive and highly specific for B. microti DNA, a result confirmed by the Centers for Disease Control and Prevention (CDC) (Table)
Results of serologic testing and PCR analyses of specimens collected from a California resident with babesiosis and donors of packed red blood cells, 2007*
Summary
Babesiosis was reported in a California resident who received a transfusion of blood products collected in the disease-endemic northeastern region of the United States. This report describes a transfusion-acquired case of babesiosis caused by B. microti in a resident of Los Angeles County, California. Confirmatory testing at CDC corroborated the negative result for the acute specimen but showed the convalescent specimen, collected 8 days after onset, to be positive for B. microti, with a total antibody titer of 64. Results of serologic testing and PCR analyses of specimens collected from a California resident with babesiosis and donors of packed red blood cells, 2007*
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