Serologic testing of patients with acute lymphocytic leukemia for susceptibility to varicella was confounded by prior administration of blood products. Packed red cell transfusions produced fewer problems than plasma-rich transfusions. Seronegative individuals may be transiently seropositive for several weeks. Specimens submitted for serologic testing should be accompanied by information on recent receipt of blood products.
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Taylor‐Wiedeman et al. (1986) studied this question.
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