Dengue Virus Replication Enhancement in Peripheral Blood Leukocytes from Immune Human Beings

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Abstract
Dengue 2 virus replication in peripheral blood leukocyte cultures from 10 of 13 Asian or Polynesian subjects with actively acquired dengue immunity and two of three infants with passively acquired dengue antibody. Only 2 of 11 cultures from nonimmune infants or children supported viral replication. This study establishes a parallel in the biological behavior of human and simian PBL with respect to the immunological dependence of dengue virus replication in vitro. Elucidation of the mechanism (or mechamisms) regulating growth of dengue virus in leukocytes from immune hosts may contribute to an understanding of the role that virus-leukocyte interactions play in the pathogenesis of human dengue illness.

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