A blood transfusion was the apparent source of a West Nile virus infection that killed a patient with non-Hodgkin lymphoma in Colorado in 2012, according to CDC researchers writing in Morbidity and Mortality Weekly Report. "Although WNV is rarely transmitted through screened blood products, clinicians should consider WNV disease in patients with compatible symptoms who were recently transfused," researchers said. Consideration should be given to strategies for the handling of minipools whose individual donations test negative but are reactive as a group, the CDC team advised.

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